GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2024-56643 (GCVE-0-2024-56643)

Vulnerability from cvelistv5 – Published: 2024-12-27 15:02 – Updated: 2026-05-11 20:56
VLAI
Title
dccp: Fix memory leak in dccp_feat_change_recv
Summary
In the Linux kernel, the following vulnerability has been resolved: dccp: Fix memory leak in dccp_feat_change_recv If dccp_feat_push_confirm() fails after new value for SP feature was accepted without reconciliation ('entry == NULL' branch), memory allocated for that value with dccp_feat_clone_sp_val() is never freed. Here is the kmemleak stack for this: unreferenced object 0xffff88801d4ab488 (size 8): comm "syz-executor310", pid 1127, jiffies 4295085598 (age 41.666s) hex dump (first 8 bytes): 01 b4 4a 1d 80 88 ff ff ..J..... backtrace: [<00000000db7cabfe>] kmemdup+0x23/0x50 mm/util.c:128 [<0000000019b38405>] kmemdup include/linux/string.h:465 [inline] [<0000000019b38405>] dccp_feat_clone_sp_val net/dccp/feat.c:371 [inline] [<0000000019b38405>] dccp_feat_clone_sp_val net/dccp/feat.c:367 [inline] [<0000000019b38405>] dccp_feat_change_recv net/dccp/feat.c:1145 [inline] [<0000000019b38405>] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416 [<00000000b1f6d94a>] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125 [<0000000030d7b621>] dccp_rcv_state_process+0x197/0x13d0 net/dccp/input.c:650 [<000000001f74c72e>] dccp_v4_do_rcv+0xf9/0x1a0 net/dccp/ipv4.c:688 [<00000000a6c24128>] sk_backlog_rcv include/net/sock.h:1041 [inline] [<00000000a6c24128>] __release_sock+0x139/0x3b0 net/core/sock.c:2570 [<00000000cf1f3a53>] release_sock+0x54/0x1b0 net/core/sock.c:3111 [<000000008422fa23>] inet_wait_for_connect net/ipv4/af_inet.c:603 [inline] [<000000008422fa23>] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696 [<0000000015b6f64d>] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735 [<0000000010122488>] __sys_connect_file+0x15c/0x1a0 net/socket.c:1865 [<00000000b4b70023>] __sys_connect+0x165/0x1a0 net/socket.c:1882 [<00000000f4cb3815>] __do_sys_connect net/socket.c:1892 [inline] [<00000000f4cb3815>] __se_sys_connect net/socket.c:1889 [inline] [<00000000f4cb3815>] __x64_sys_connect+0x6e/0xb0 net/socket.c:1889 [<00000000e7b1e839>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<0000000055e91434>] entry_SYSCALL_64_after_hwframe+0x67/0xd1 Clean up the allocated memory in case of dccp_feat_push_confirm() failure and bail out with an error reset code. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-17 20:10 UTC
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e77b8363b2ea7c0d89919547c1a8b0562f298b57 , < 623be080ab3c13d71570bd32f7202a8efa8e2252 (git)
Affected: e77b8363b2ea7c0d89919547c1a8b0562f298b57 , < c99507fff94b926fc92279c92d80f229c91cb85d (git)
Affected: e77b8363b2ea7c0d89919547c1a8b0562f298b57 , < bc3d4423def1a9412a0ae454cb4477089ab79276 (git)
Affected: e77b8363b2ea7c0d89919547c1a8b0562f298b57 , < 6ff67909ee2ffad911e3122616df41dee23ff4f6 (git)
Affected: e77b8363b2ea7c0d89919547c1a8b0562f298b57 , < d3ec686a369fae5034303061f003cd3f94ddfd23 (git)
Affected: e77b8363b2ea7c0d89919547c1a8b0562f298b57 , < 9ee68b0f23706a77f53c832457b9384178b76421 (git)
Affected: e77b8363b2ea7c0d89919547c1a8b0562f298b57 , < 22be4727a8f898442066bcac34f8a1ad0bc72e14 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.29
Unaffected: 0 , < 2.6.29 (semver)
Unaffected: 5.4.287 , ≤ 5.4.* (semver)
Unaffected: 5.10.231 , ≤ 5.10.* (semver)
Unaffected: 5.15.174 , ≤ 5.15.* (semver)
Unaffected: 6.1.120 , ≤ 6.1.* (semver)
Unaffected: 6.6.66 , ≤ 6.6.* (semver)
Unaffected: 6.12.5 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "LOW",
              "baseScore": 3.3,
              "baseSeverity": "LOW",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56643",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-17T20:10:38.316606Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-401",
                "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-17T20:15:52.853Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:51:45.595Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/dccp/feat.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "623be080ab3c13d71570bd32f7202a8efa8e2252",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "c99507fff94b926fc92279c92d80f229c91cb85d",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "bc3d4423def1a9412a0ae454cb4477089ab79276",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "6ff67909ee2ffad911e3122616df41dee23ff4f6",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "d3ec686a369fae5034303061f003cd3f94ddfd23",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "9ee68b0f23706a77f53c832457b9384178b76421",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            },
            {
              "lessThan": "22be4727a8f898442066bcac34f8a1ad0bc72e14",
              "status": "affected",
              "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/dccp/feat.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.29"
            },
            {
              "lessThan": "2.6.29",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.66",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.287",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.231",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.174",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.120",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.66",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.5",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndccp: Fix memory leak in dccp_feat_change_recv\n\nIf dccp_feat_push_confirm() fails after new value for SP feature was accepted\nwithout reconciliation (\u0027entry == NULL\u0027 branch), memory allocated for that value\nwith dccp_feat_clone_sp_val() is never freed.\n\nHere is the kmemleak stack for this:\n\nunreferenced object 0xffff88801d4ab488 (size 8):\n  comm \"syz-executor310\", pid 1127, jiffies 4295085598 (age 41.666s)\n  hex dump (first 8 bytes):\n    01 b4 4a 1d 80 88 ff ff                          ..J.....\n  backtrace:\n    [\u003c00000000db7cabfe\u003e] kmemdup+0x23/0x50 mm/util.c:128\n    [\u003c0000000019b38405\u003e] kmemdup include/linux/string.h:465 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_clone_sp_val net/dccp/feat.c:371 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_clone_sp_val net/dccp/feat.c:367 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_change_recv net/dccp/feat.c:1145 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416\n    [\u003c00000000b1f6d94a\u003e] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125\n    [\u003c0000000030d7b621\u003e] dccp_rcv_state_process+0x197/0x13d0 net/dccp/input.c:650\n    [\u003c000000001f74c72e\u003e] dccp_v4_do_rcv+0xf9/0x1a0 net/dccp/ipv4.c:688\n    [\u003c00000000a6c24128\u003e] sk_backlog_rcv include/net/sock.h:1041 [inline]\n    [\u003c00000000a6c24128\u003e] __release_sock+0x139/0x3b0 net/core/sock.c:2570\n    [\u003c00000000cf1f3a53\u003e] release_sock+0x54/0x1b0 net/core/sock.c:3111\n    [\u003c000000008422fa23\u003e] inet_wait_for_connect net/ipv4/af_inet.c:603 [inline]\n    [\u003c000000008422fa23\u003e] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696\n    [\u003c0000000015b6f64d\u003e] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735\n    [\u003c0000000010122488\u003e] __sys_connect_file+0x15c/0x1a0 net/socket.c:1865\n    [\u003c00000000b4b70023\u003e] __sys_connect+0x165/0x1a0 net/socket.c:1882\n    [\u003c00000000f4cb3815\u003e] __do_sys_connect net/socket.c:1892 [inline]\n    [\u003c00000000f4cb3815\u003e] __se_sys_connect net/socket.c:1889 [inline]\n    [\u003c00000000f4cb3815\u003e] __x64_sys_connect+0x6e/0xb0 net/socket.c:1889\n    [\u003c00000000e7b1e839\u003e] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46\n    [\u003c0000000055e91434\u003e] entry_SYSCALL_64_after_hwframe+0x67/0xd1\n\nClean up the allocated memory in case of dccp_feat_push_confirm() failure\nand bail out with an error reset code.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:56:27.433Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/623be080ab3c13d71570bd32f7202a8efa8e2252"
        },
        {
          "url": "https://git.kernel.org/stable/c/c99507fff94b926fc92279c92d80f229c91cb85d"
        },
        {
          "url": "https://git.kernel.org/stable/c/bc3d4423def1a9412a0ae454cb4477089ab79276"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ff67909ee2ffad911e3122616df41dee23ff4f6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3ec686a369fae5034303061f003cd3f94ddfd23"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ee68b0f23706a77f53c832457b9384178b76421"
        },
        {
          "url": "https://git.kernel.org/stable/c/22be4727a8f898442066bcac34f8a1ad0bc72e14"
        }
      ],
      "title": "dccp: Fix memory leak in dccp_feat_change_recv",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56643",
    "datePublished": "2024-12-27T15:02:44.492Z",
    "dateReserved": "2024-12-27T15:00:39.840Z",
    "dateUpdated": "2026-05-11T20:56:27.433Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-56643",
      "date": "2026-09-19",
      "epss": "0.00229",
      "percentile": "0.13956"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "1298C84F-E296-4E2D-8B96-829D4E94588D",
                  "versionEndExcluding": "5.4.287",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "B5C644CC-2BD7-4E32-BC54-8DCC7ABE9935",
                  "versionEndExcluding": "5.10.231",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "419FD073-1517-4FD5-8158-F94BC68A1E89",
                  "versionEndExcluding": "5.15.174",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "09AC6122-E2A4-40FE-9D33-268A1B2EC265",
                  "versionEndExcluding": "6.1.120",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "29A976AD-B9AB-4A95-9F08-7669F8847EB9",
                  "versionEndExcluding": "6.6.66",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "9501D045-7A94-42CA-8B03-821BE94A65B7",
                  "versionEndExcluding": "6.12.5",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*",
                  "matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndccp: Fix memory leak in dccp_feat_change_recv\n\nIf dccp_feat_push_confirm() fails after new value for SP feature was accepted\nwithout reconciliation (\u0027entry == NULL\u0027 branch), memory allocated for that value\nwith dccp_feat_clone_sp_val() is never freed.\n\nHere is the kmemleak stack for this:\n\nunreferenced object 0xffff88801d4ab488 (size 8):\n  comm \"syz-executor310\", pid 1127, jiffies 4295085598 (age 41.666s)\n  hex dump (first 8 bytes):\n    01 b4 4a 1d 80 88 ff ff                          ..J.....\n  backtrace:\n    [\u003c00000000db7cabfe\u003e] kmemdup+0x23/0x50 mm/util.c:128\n    [\u003c0000000019b38405\u003e] kmemdup include/linux/string.h:465 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_clone_sp_val net/dccp/feat.c:371 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_clone_sp_val net/dccp/feat.c:367 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_change_recv net/dccp/feat.c:1145 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416\n    [\u003c00000000b1f6d94a\u003e] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125\n    [\u003c0000000030d7b621\u003e] dccp_rcv_state_process+0x197/0x13d0 net/dccp/input.c:650\n    [\u003c000000001f74c72e\u003e] dccp_v4_do_rcv+0xf9/0x1a0 net/dccp/ipv4.c:688\n    [\u003c00000000a6c24128\u003e] sk_backlog_rcv include/net/sock.h:1041 [inline]\n    [\u003c00000000a6c24128\u003e] __release_sock+0x139/0x3b0 net/core/sock.c:2570\n    [\u003c00000000cf1f3a53\u003e] release_sock+0x54/0x1b0 net/core/sock.c:3111\n    [\u003c000000008422fa23\u003e] inet_wait_for_connect net/ipv4/af_inet.c:603 [inline]\n    [\u003c000000008422fa23\u003e] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696\n    [\u003c0000000015b6f64d\u003e] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735\n    [\u003c0000000010122488\u003e] __sys_connect_file+0x15c/0x1a0 net/socket.c:1865\n    [\u003c00000000b4b70023\u003e] __sys_connect+0x165/0x1a0 net/socket.c:1882\n    [\u003c00000000f4cb3815\u003e] __do_sys_connect net/socket.c:1892 [inline]\n    [\u003c00000000f4cb3815\u003e] __se_sys_connect net/socket.c:1889 [inline]\n    [\u003c00000000f4cb3815\u003e] __x64_sys_connect+0x6e/0xb0 net/socket.c:1889\n    [\u003c00000000e7b1e839\u003e] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46\n    [\u003c0000000055e91434\u003e] entry_SYSCALL_64_after_hwframe+0x67/0xd1\n\nClean up the allocated memory in case of dccp_feat_push_confirm() failure\nand bail out with an error reset code.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dccp: Se corrige la p\u00e9rdida de memoria en dccp_feat_change_recv Si dccp_feat_push_confirm() falla despu\u00e9s de que se acept\u00f3 un nuevo valor para la caracter\u00edstica SP sin conciliaci\u00f3n (rama \u0027entry == NULL\u0027), la memoria asignada para ese valor con dccp_feat_clone_sp_val() nunca se libera. Aqu\u00ed est\u00e1 la pila kmemleak para esto: objeto sin referencia 0xffff88801d4ab488 (tama\u00f1o 8): comm \"syz-executor310\", pid 1127, jiffies 4295085598 (edad 41.666s) volcado hexadecimal (primeros 8 bytes): 01 b4 4a 1d 80 88 ff ff ..J..... backtrace: [\u0026lt;00000000db7cabfe\u0026gt;] kmemdup+0x23/0x50 mm/util.c:128 [\u0026lt;0000000019b38405\u0026gt;] kmemdup include/linux/string.h:465 [en l\u00ednea] [\u0026lt;0000000019b38405\u0026gt;] dccp_feat_clone_sp_val net/dccp/feat.c:371 [en l\u00ednea] [\u0026lt;0000000019b38405\u0026gt;] dccp_feat_clone_sp_val net/dccp/feat.c:367 [en l\u00ednea] [\u0026lt;0000000019b38405\u0026gt;] dccp_feat_change_recv net/dccp/feat.c:1145 [en l\u00ednea] [\u0026lt;0000000019b38405\u0026gt;] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416 [\u0026lt;00000000b1f6d94a\u0026gt;] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125 [\u0026lt;0000000030d7b621\u0026gt;] dccp_rcv_state_process+0x197/0x13d0 red/dccp/input.c:650 [\u0026lt;000000001f74c72e\u0026gt;] dccp_v4_do_rcv+0xf9/0x1a0 red/dccp/ipv4.c:688 [\u0026lt;00000000a6c24128\u0026gt;] sk_backlog_rcv incluir/net/sock.h:1041 [en l\u00ednea] [\u0026lt;00000000a6c24128\u0026gt;] __release_sock+0x139/0x3b0 red/core/sock.c:2570 [\u0026lt;00000000cf1f3a53\u0026gt;] release_sock+0x54/0x1b0 net/core/sock.c:3111 [\u0026lt;000000008422fa23\u0026gt;] espera_de_conexi\u00f3n inet net/ipv4/af_inet.c:603 [en l\u00ednea] [\u0026lt;000000008422fa23\u0026gt;] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696 [\u0026lt;0000000015b6f64d\u0026gt;] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735 [\u0026lt;0000000010122488\u0026gt;] archivo_de_conexi\u00f3n_sys+0x15c/0x1a0 net/socket.c:1865 [\u0026lt;00000000b4b70023\u0026gt;] __sys_connect+0x165/0x1a0 red/socket.c:1882 [\u0026lt;00000000f4cb3815\u0026gt;] __do_sys_connect red/socket.c:1892 [en l\u00ednea] [\u0026lt;00000000f4cb3815\u0026gt;] __se_sys_connect red/socket.c:1889 [en l\u00ednea] [\u0026lt;00000000f4cb3815\u0026gt;] __x64_sys_connect+0x6e/0xb0 red/socket.c:1889 [\u0026lt;00000000e7b1e839\u0026gt;] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [\u0026lt;0000000055e91434\u0026gt;] entry_SYSCALL_64_after_hwframe+0x67/0xd1 Limpia la memoria asignada en caso de que dccp_feat_push_confirm() falle y se resuelve con un c\u00f3digo de reinicio de error. Encontrado por Linux Verification Center (linuxtesting.org) con Syzkaller."
        }
      ],
      "id": "CVE-2024-56643",
      "lastModified": "2025-01-06T17:14:41.813",
      "metrics": {
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 1.8,
            "impactScore": 3.6,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2024-12-27T15:15:24.040",
      "references": [
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/22be4727a8f898442066bcac34f8a1ad0bc72e14"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/623be080ab3c13d71570bd32f7202a8efa8e2252"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/6ff67909ee2ffad911e3122616df41dee23ff4f6"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/9ee68b0f23706a77f53c832457b9384178b76421"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/bc3d4423def1a9412a0ae454cb4477089ab79276"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/c99507fff94b926fc92279c92d80f229c91cb85d"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/d3ec686a369fae5034303061f003cd3f94ddfd23"
        }
      ],
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-401"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "microsoft_vex": {
      "current_release_date": "2025-03-08T00:00:00.000Z",
      "cve": "CVE-2024-56643",
      "id": "msrc_CVE-2024-56643",
      "initial_release_date": "2024-12-02T00:00:00.000Z",
      "product_status:fixed": "4",
      "product_status:known_affected": "4",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "dccp: Fix memory leak in dccp_feat_change_recv",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-56643.json",
      "version": "1"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "net/dccp/feat.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "623be080ab3c13d71570bd32f7202a8efa8e2252",
                    "status": "affected",
                    "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "c99507fff94b926fc92279c92d80f229c91cb85d",
                    "status": "affected",
                    "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "bc3d4423def1a9412a0ae454cb4477089ab79276",
                    "status": "affected",
                    "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "6ff67909ee2ffad911e3122616df41dee23ff4f6",
                    "status": "affected",
                    "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "d3ec686a369fae5034303061f003cd3f94ddfd23",
                    "status": "affected",
                    "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "9ee68b0f23706a77f53c832457b9384178b76421",
                    "status": "affected",
                    "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "22be4727a8f898442066bcac34f8a1ad0bc72e14",
                    "status": "affected",
                    "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "net/dccp/feat.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "2.6.29"
                  },
                  {
                    "lessThan": "2.6.29",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.287",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.231",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.174",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.120",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.66",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.5",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.13",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1298C84F-E296-4E2D-8B96-829D4E94588D",
                    "versionEndExcluding": "5.4.287",
                    "versionStartIncluding": "2.6.29",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B5C644CC-2BD7-4E32-BC54-8DCC7ABE9935",
                    "versionEndExcluding": "5.10.231",
                    "versionStartIncluding": "5.5",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "419FD073-1517-4FD5-8158-F94BC68A1E89",
                    "versionEndExcluding": "5.15.174",
                    "versionStartIncluding": "5.11",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "09AC6122-E2A4-40FE-9D33-268A1B2EC265",
                    "versionEndExcluding": "6.1.120",
                    "versionStartIncluding": "5.16",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "29A976AD-B9AB-4A95-9F08-7669F8847EB9",
                    "versionEndExcluding": "6.6.66",
                    "versionStartIncluding": "6.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9501D045-7A94-42CA-8B03-821BE94A65B7",
                    "versionEndExcluding": "6.12.5",
                    "versionStartIncluding": "6.7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndccp: Fix memory leak in dccp_feat_change_recv\n\nIf dccp_feat_push_confirm() fails after new value for SP feature was accepted\nwithout reconciliation (\u0027entry == NULL\u0027 branch), memory allocated for that value\nwith dccp_feat_clone_sp_val() is never freed.\n\nHere is the kmemleak stack for this:\n\nunreferenced object 0xffff88801d4ab488 (size 8):\n  comm \"syz-executor310\", pid 1127, jiffies 4295085598 (age 41.666s)\n  hex dump (first 8 bytes):\n    01 b4 4a 1d 80 88 ff ff                          ..J.....\n  backtrace:\n    [\u003c00000000db7cabfe\u003e] kmemdup+0x23/0x50 mm/util.c:128\n    [\u003c0000000019b38405\u003e] kmemdup include/linux/string.h:465 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_clone_sp_val net/dccp/feat.c:371 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_clone_sp_val net/dccp/feat.c:367 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_change_recv net/dccp/feat.c:1145 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416\n    [\u003c00000000b1f6d94a\u003e] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125\n    [\u003c0000000030d7b621\u003e] dccp_rcv_state_process+0x197/0x13d0 net/dccp/input.c:650\n    [\u003c000000001f74c72e\u003e] dccp_v4_do_rcv+0xf9/0x1a0 net/dccp/ipv4.c:688\n    [\u003c00000000a6c24128\u003e] sk_backlog_rcv include/net/sock.h:1041 [inline]\n    [\u003c00000000a6c24128\u003e] __release_sock+0x139/0x3b0 net/core/sock.c:2570\n    [\u003c00000000cf1f3a53\u003e] release_sock+0x54/0x1b0 net/core/sock.c:3111\n    [\u003c000000008422fa23\u003e] inet_wait_for_connect net/ipv4/af_inet.c:603 [inline]\n    [\u003c000000008422fa23\u003e] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696\n    [\u003c0000000015b6f64d\u003e] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735\n    [\u003c0000000010122488\u003e] __sys_connect_file+0x15c/0x1a0 net/socket.c:1865\n    [\u003c00000000b4b70023\u003e] __sys_connect+0x165/0x1a0 net/socket.c:1882\n    [\u003c00000000f4cb3815\u003e] __do_sys_connect net/socket.c:1892 [inline]\n    [\u003c00000000f4cb3815\u003e] __se_sys_connect net/socket.c:1889 [inline]\n    [\u003c00000000f4cb3815\u003e] __x64_sys_connect+0x6e/0xb0 net/socket.c:1889\n    [\u003c00000000e7b1e839\u003e] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46\n    [\u003c0000000055e91434\u003e] entry_SYSCALL_64_after_hwframe+0x67/0xd1\n\nClean up the allocated memory in case of dccp_feat_push_confirm() failure\nand bail out with an error reset code.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dccp: Se corrige la p\u00e9rdida de memoria en dccp_feat_change_recv Si dccp_feat_push_confirm() falla despu\u00e9s de que se acept\u00f3 un nuevo valor para la caracter\u00edstica SP sin conciliaci\u00f3n (rama \u0027entry == NULL\u0027), la memoria asignada para ese valor con dccp_feat_clone_sp_val() nunca se libera. Aqu\u00ed est\u00e1 la pila kmemleak para esto: objeto sin referencia 0xffff88801d4ab488 (tama\u00f1o 8): comm \"syz-executor310\", pid 1127, jiffies 4295085598 (edad 41.666s) volcado hexadecimal (primeros 8 bytes): 01 b4 4a 1d 80 88 ff ff ..J..... backtrace: [\u0026lt;00000000db7cabfe\u0026gt;] kmemdup+0x23/0x50 mm/util.c:128 [\u0026lt;0000000019b38405\u0026gt;] kmemdup include/linux/string.h:465 [en l\u00ednea] [\u0026lt;0000000019b38405\u0026gt;] dccp_feat_clone_sp_val net/dccp/feat.c:371 [en l\u00ednea] [\u0026lt;0000000019b38405\u0026gt;] dccp_feat_clone_sp_val net/dccp/feat.c:367 [en l\u00ednea] [\u0026lt;0000000019b38405\u0026gt;] dccp_feat_change_recv net/dccp/feat.c:1145 [en l\u00ednea] [\u0026lt;0000000019b38405\u0026gt;] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416 [\u0026lt;00000000b1f6d94a\u0026gt;] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125 [\u0026lt;0000000030d7b621\u0026gt;] dccp_rcv_state_process+0x197/0x13d0 red/dccp/input.c:650 [\u0026lt;000000001f74c72e\u0026gt;] dccp_v4_do_rcv+0xf9/0x1a0 red/dccp/ipv4.c:688 [\u0026lt;00000000a6c24128\u0026gt;] sk_backlog_rcv incluir/net/sock.h:1041 [en l\u00ednea] [\u0026lt;00000000a6c24128\u0026gt;] __release_sock+0x139/0x3b0 red/core/sock.c:2570 [\u0026lt;00000000cf1f3a53\u0026gt;] release_sock+0x54/0x1b0 net/core/sock.c:3111 [\u0026lt;000000008422fa23\u0026gt;] espera_de_conexi\u00f3n inet net/ipv4/af_inet.c:603 [en l\u00ednea] [\u0026lt;000000008422fa23\u0026gt;] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696 [\u0026lt;0000000015b6f64d\u0026gt;] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735 [\u0026lt;0000000010122488\u0026gt;] archivo_de_conexi\u00f3n_sys+0x15c/0x1a0 net/socket.c:1865 [\u0026lt;00000000b4b70023\u0026gt;] __sys_connect+0x165/0x1a0 red/socket.c:1882 [\u0026lt;00000000f4cb3815\u0026gt;] __do_sys_connect red/socket.c:1892 [en l\u00ednea] [\u0026lt;00000000f4cb3815\u0026gt;] __se_sys_connect red/socket.c:1889 [en l\u00ednea] [\u0026lt;00000000f4cb3815\u0026gt;] __x64_sys_connect+0x6e/0xb0 red/socket.c:1889 [\u0026lt;00000000e7b1e839\u0026gt;] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [\u0026lt;0000000055e91434\u0026gt;] entry_SYSCALL_64_after_hwframe+0x67/0xd1 Limpia la memoria asignada en caso de que dccp_feat_push_confirm() falle y se resuelve con un c\u00f3digo de reinicio de error. Encontrado por Linux Verification Center (linuxtesting.org) con Syzkaller."
          }
        ],
        "id": "CVE-2024-56643",
        "lastModified": "2026-06-17T08:12:37.623",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "LOW",
                "baseScore": 3.3,
                "baseSeverity": "LOW",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 1.4,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-56643",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-17T20:10:38.316606Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-12-27T15:15:24.040",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/22be4727a8f898442066bcac34f8a1ad0bc72e14"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/623be080ab3c13d71570bd32f7202a8efa8e2252"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6ff67909ee2ffad911e3122616df41dee23ff4f6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9ee68b0f23706a77f53c832457b9384178b76421"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/bc3d4423def1a9412a0ae454cb4477089ab79276"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/c99507fff94b926fc92279c92d80f229c91cb85d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/d3ec686a369fae5034303061f003cd3f94ddfd23"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-401"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-401"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T13:51:09+00:00",
      "cve": "CVE-2024-56643",
      "id": "CVE-2024-56643",
      "initial_release_date": "2024-12-27T00:00:00+00:00",
      "product_status:known_affected": "42",
      "product_status:known_not_affected": "156",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: dccp: Fix memory leak in dccp_feat_change_recv",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56643.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-09-13T23:42:06Z",
      "cve": "CVE-2024-56643",
      "id": "CVE-2024-56643",
      "initial_release_date": "2025-01-07T03:49:08Z",
      "product_status:known_affected": "835",
      "product_status:known_not_affected": "32",
      "product_status:recommended": "398",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-56643",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-56643.json",
      "version": "73"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-03T20:51:45.595Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
              },
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "LOW",
                  "baseScore": 3.3,
                  "baseSeverity": "LOW",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-56643",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-04-17T20:10:38.316606Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-401",
                    "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-04-17T20:10:39.828Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "net/dccp/feat.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "623be080ab3c13d71570bd32f7202a8efa8e2252",
                  "status": "affected",
                  "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                  "versionType": "git"
                },
                {
                  "lessThan": "c99507fff94b926fc92279c92d80f229c91cb85d",
                  "status": "affected",
                  "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                  "versionType": "git"
                },
                {
                  "lessThan": "bc3d4423def1a9412a0ae454cb4477089ab79276",
                  "status": "affected",
                  "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                  "versionType": "git"
                },
                {
                  "lessThan": "6ff67909ee2ffad911e3122616df41dee23ff4f6",
                  "status": "affected",
                  "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                  "versionType": "git"
                },
                {
                  "lessThan": "d3ec686a369fae5034303061f003cd3f94ddfd23",
                  "status": "affected",
                  "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                  "versionType": "git"
                },
                {
                  "lessThan": "9ee68b0f23706a77f53c832457b9384178b76421",
                  "status": "affected",
                  "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                  "versionType": "git"
                },
                {
                  "lessThan": "22be4727a8f898442066bcac34f8a1ad0bc72e14",
                  "status": "affected",
                  "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/dccp/feat.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "2.6.29"
                },
                {
                  "lessThan": "2.6.29",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.287",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.231",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.174",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.120",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.66",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.5",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.13",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.287",
                      "versionStartIncluding": "2.6.29",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.231",
                      "versionStartIncluding": "2.6.29",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.174",
                      "versionStartIncluding": "2.6.29",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.120",
                      "versionStartIncluding": "2.6.29",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.66",
                      "versionStartIncluding": "2.6.29",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.5",
                      "versionStartIncluding": "2.6.29",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13",
                      "versionStartIncluding": "2.6.29",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndccp: Fix memory leak in dccp_feat_change_recv\n\nIf dccp_feat_push_confirm() fails after new value for SP feature was accepted\nwithout reconciliation (\u0027entry == NULL\u0027 branch), memory allocated for that value\nwith dccp_feat_clone_sp_val() is never freed.\n\nHere is the kmemleak stack for this:\n\nunreferenced object 0xffff88801d4ab488 (size 8):\n  comm \"syz-executor310\", pid 1127, jiffies 4295085598 (age 41.666s)\n  hex dump (first 8 bytes):\n    01 b4 4a 1d 80 88 ff ff                          ..J.....\n  backtrace:\n    [\u003c00000000db7cabfe\u003e] kmemdup+0x23/0x50 mm/util.c:128\n    [\u003c0000000019b38405\u003e] kmemdup include/linux/string.h:465 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_clone_sp_val net/dccp/feat.c:371 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_clone_sp_val net/dccp/feat.c:367 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_change_recv net/dccp/feat.c:1145 [inline]\n    [\u003c0000000019b38405\u003e] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416\n    [\u003c00000000b1f6d94a\u003e] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125\n    [\u003c0000000030d7b621\u003e] dccp_rcv_state_process+0x197/0x13d0 net/dccp/input.c:650\n    [\u003c000000001f74c72e\u003e] dccp_v4_do_rcv+0xf9/0x1a0 net/dccp/ipv4.c:688\n    [\u003c00000000a6c24128\u003e] sk_backlog_rcv include/net/sock.h:1041 [inline]\n    [\u003c00000000a6c24128\u003e] __release_sock+0x139/0x3b0 net/core/sock.c:2570\n    [\u003c00000000cf1f3a53\u003e] release_sock+0x54/0x1b0 net/core/sock.c:3111\n    [\u003c000000008422fa23\u003e] inet_wait_for_connect net/ipv4/af_inet.c:603 [inline]\n    [\u003c000000008422fa23\u003e] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696\n    [\u003c0000000015b6f64d\u003e] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735\n    [\u003c0000000010122488\u003e] __sys_connect_file+0x15c/0x1a0 net/socket.c:1865\n    [\u003c00000000b4b70023\u003e] __sys_connect+0x165/0x1a0 net/socket.c:1882\n    [\u003c00000000f4cb3815\u003e] __do_sys_connect net/socket.c:1892 [inline]\n    [\u003c00000000f4cb3815\u003e] __se_sys_connect net/socket.c:1889 [inline]\n    [\u003c00000000f4cb3815\u003e] __x64_sys_connect+0x6e/0xb0 net/socket.c:1889\n    [\u003c00000000e7b1e839\u003e] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46\n    [\u003c0000000055e91434\u003e] entry_SYSCALL_64_after_hwframe+0x67/0xd1\n\nClean up the allocated memory in case of dccp_feat_push_confirm() failure\nand bail out with an error reset code.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-05-04T10:00:51.915Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/623be080ab3c13d71570bd32f7202a8efa8e2252"
            },
            {
              "url": "https://git.kernel.org/stable/c/c99507fff94b926fc92279c92d80f229c91cb85d"
            },
            {
              "url": "https://git.kernel.org/stable/c/bc3d4423def1a9412a0ae454cb4477089ab79276"
            },
            {
              "url": "https://git.kernel.org/stable/c/6ff67909ee2ffad911e3122616df41dee23ff4f6"
            },
            {
              "url": "https://git.kernel.org/stable/c/d3ec686a369fae5034303061f003cd3f94ddfd23"
            },
            {
              "url": "https://git.kernel.org/stable/c/9ee68b0f23706a77f53c832457b9384178b76421"
            },
            {
              "url": "https://git.kernel.org/stable/c/22be4727a8f898442066bcac34f8a1ad0bc72e14"
            }
          ],
          "title": "dccp: Fix memory leak in dccp_feat_change_recv",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-56643",
        "datePublished": "2024-12-27T15:02:44.492Z",
        "dateReserved": "2024-12-27T15:00:39.840Z",
        "dateUpdated": "2025-11-03T20:51:45.595Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.