{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-50165",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:20:04.347964Z",
                "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": "2025-10-01T20:27:11.791Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5d7a0a426540319327309035509cb768a2f5c2c4",
              "status": "affected",
              "version": "6c1752e0b6ca8c7021d6da3926738d8d88f601a9",
              "versionType": "git"
            },
            {
              "lessThan": "1f97c03f43fadc407de5b5cb01c07755053e1c22",
              "status": "affected",
              "version": "6c1752e0b6ca8c7021d6da3926738d8d88f601a9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.6",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Preserve param-\u003estring when parsing mount options\n\nIn bpf_parse_param(), keep the value of param-\u003estring intact so it can\nbe freed later. Otherwise, the kmalloc area pointed to by param-\u003estring\nwill be leaked as shown below:\n\nunreferenced object 0xffff888118c46d20 (size 8):\n  comm \"new_name\", pid 12109, jiffies 4295580214\n  hex dump (first 8 bytes):\n    61 6e 79 00 38 c9 5c 7e                          any.8.\\~\n  backtrace (crc e1b7f876):\n    [\u003c00000000c6848ac7\u003e] kmemleak_alloc+0x4b/0x80\n    [\u003c00000000de9f7d00\u003e] __kmalloc_node_track_caller_noprof+0x36e/0x4a0\n    [\u003c000000003e29b886\u003e] memdup_user+0x32/0xa0\n    [\u003c0000000007248326\u003e] strndup_user+0x46/0x60\n    [\u003c0000000035b3dd29\u003e] __x64_sys_fsconfig+0x368/0x3d0\n    [\u003c0000000018657927\u003e] x64_sys_call+0xff/0x9f0\n    [\u003c00000000c0cabc95\u003e] do_syscall_64+0x3b/0xc0\n    [\u003c000000002f331597\u003e] entry_SYSCALL_64_after_hwframe+0x4b/0x53"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached through the fsopen(2)/fsconfig(2) syscall pair (or mount(2) with monolithic options) against the bpf filesystem, requiring local system access. There is no remote or adjacent-network path to bpffs mount-option parsing.\nAC:L - A single deterministic fsconfig() call with delegate_cmds=\"x:any\" reliably triggers the interior-pointer kfree(), and a trivial loop reliably drives the unbounded leak; no race, timing window, or uncontrollable precondition is involved. CONFIG_BPF_SYSCALL/bpffs is enabled in essentially all distribution kernels.\nPR:L - bpf_fs_type is FS_USERNS_MOUNT and fsopen() only requires ns_capable(mnt_ns-\u003euser_ns, CAP_SYS_ADMIN), so any unprivileged user can reach bpf_parse_param() via unshare -Urm. The CAP_SYS_ADMIN check on delegation options executes only after the buggy strsep loop, so it provides no protection.\nUI:N - The attacker performs the entire sequence \u2014 create a user/mount namespace, fsopen the bpf filesystem, issue fsconfig \u2014 with no action by any other user. No victim must mount anything or open any file.\nS:U - The corruption and resource exhaustion occur in the kernel slab allocator of the same host, within the same security authority. No VM, IOMMU, or hypervisor boundary is crossed.\nC:H - Freeing an interior pointer inserts a misaligned address into the SLUB freelist, so a subsequent allocation returns a chunk overlapping adjacent live objects \u2014 a type-confusion/aliasing primitive that lets the attacker read kernel data belonging to other allocations. Per kernel scoring guidance, slab corruption of this class is treated as a full confidentiality compromise.\nI:H - The same misaligned kfree() causes set_freepointer() to write a heap pointer out of bounds of the freed chunk and hands out overlapping allocations, giving an attacker-usable write primitive over adjacent slab objects. Heap freelist corruption of this kind is the standard basis for privilege escalation.\nA:H - Slab freelist corruption produces kernel panics/oopses (and is caught immediately as an invalid free on KASAN/SLUB_DEBUG builds), and the leak variant lets an unprivileged user drain kernel memory in an unbounded loop until OOM. Either path yields a full denial of service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:42:13.725Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5d7a0a426540319327309035509cb768a2f5c2c4"
        },
        {
          "url": "https://git.kernel.org/stable/c/1f97c03f43fadc407de5b5cb01c07755053e1c22"
        }
      ],
      "title": "bpf: Preserve param-\u003estring when parsing mount options",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50165",
    "datePublished": "2024-11-07T09:31:41.923Z",
    "dateReserved": "2024-10-21T19:36:19.962Z",
    "dateUpdated": "2026-08-05T11:42:13.725Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}