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

CVE-2022-49087 (GCVE-0-2022-49087)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2026-08-05 08:53
VLAI
Title
rxrpc: fix a race in rxrpc_exit_net()
Summary
In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix a race in rxrpc_exit_net() Current code can lead to the following race: CPU0 CPU1 rxrpc_exit_net() rxrpc_peer_keepalive_worker() if (rxnet->live) rxnet->live = false; del_timer_sync(&rxnet->peer_keepalive_timer); timer_reduce(&rxnet->peer_keepalive_timer, jiffies + delay); cancel_work_sync(&rxnet->peer_keepalive_work); rxrpc_exit_net() exits while peer_keepalive_timer is still armed, leading to use-after-free. syzbot report was: ODEBUG: free active (active state 0) object type: timer_list hint: rxrpc_peer_keepalive_timeout+0x0/0xb0 WARNING: CPU: 0 PID: 3660 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 0 PID: 3660 Comm: kworker/u4:6 Not tainted 5.17.0-syzkaller-13993-g88e6c0207623 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 00 1c 26 8a 4c 89 ee 48 c7 c7 00 10 26 8a e8 b1 e7 28 05 <0f> 0b 83 05 15 eb c5 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc9000353fb00 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: ffff888029196140 RSI: ffffffff815efad8 RDI: fffff520006a7f52 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ea4ae R11: 0000000000000000 R12: ffffffff89ce23e0 R13: ffffffff8a2614e0 R14: ffffffff816628c0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe1f2908924 CR3: 0000000043720000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __debug_check_no_obj_freed lib/debugobjects.c:992 [inline] debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1023 kfree+0xd6/0x310 mm/slab.c:3809 ops_free_list.part.0+0x119/0x370 net/core/net_namespace.c:176 ops_free_list net/core/net_namespace.c:174 [inline] cleanup_net+0x591/0xb00 net/core/net_namespace.c:598 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 </TASK>
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-27 18:17 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ace45bec6d77bc061c3c3d8ad99e298ea9800c2b , < 864297ee30727ae6233f80296b7fc91442620b05 (git)
Affected: ace45bec6d77bc061c3c3d8ad99e298ea9800c2b , < 7ee84d29f22de6f6c63fad6c54690517659862f1 (git)
Affected: ace45bec6d77bc061c3c3d8ad99e298ea9800c2b , < 08ff0e74fab517dbc44e11b8bc683dd4ecc65950 (git)
Affected: ace45bec6d77bc061c3c3d8ad99e298ea9800c2b , < 571d8e1d154ca18f08dcb72b69318d36e10010a0 (git)
Affected: ace45bec6d77bc061c3c3d8ad99e298ea9800c2b , < 41024a40f6c793abbb916a857f18fb009f07464c (git)
Affected: ace45bec6d77bc061c3c3d8ad99e298ea9800c2b , < cd8aef1f30d1215648e4e6686cfb422004851429 (git)
Affected: ace45bec6d77bc061c3c3d8ad99e298ea9800c2b , < 1946014ca3b19be9e485e780e862c375c6f98bad (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.17
Unaffected: 0 , < 4.17 (semver)
Unaffected: 4.19.238 , ≤ 4.19.* (semver)
Unaffected: 5.4.189 , ≤ 5.4.* (semver)
Unaffected: 5.10.111 , ≤ 5.10.* (semver)
Unaffected: 5.15.34 , ≤ 5.15.* (semver)
Unaffected: 5.16.20 , ≤ 5.16.* (semver)
Unaffected: 5.17.3 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (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": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-49087",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-27T18:17:30.562104Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-27T18:22:35.345Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/rxrpc/net_ns.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "864297ee30727ae6233f80296b7fc91442620b05",
              "status": "affected",
              "version": "ace45bec6d77bc061c3c3d8ad99e298ea9800c2b",
              "versionType": "git"
            },
            {
              "lessThan": "7ee84d29f22de6f6c63fad6c54690517659862f1",
              "status": "affected",
              "version": "ace45bec6d77bc061c3c3d8ad99e298ea9800c2b",
              "versionType": "git"
            },
            {
              "lessThan": "08ff0e74fab517dbc44e11b8bc683dd4ecc65950",
              "status": "affected",
              "version": "ace45bec6d77bc061c3c3d8ad99e298ea9800c2b",
              "versionType": "git"
            },
            {
              "lessThan": "571d8e1d154ca18f08dcb72b69318d36e10010a0",
              "status": "affected",
              "version": "ace45bec6d77bc061c3c3d8ad99e298ea9800c2b",
              "versionType": "git"
            },
            {
              "lessThan": "41024a40f6c793abbb916a857f18fb009f07464c",
              "status": "affected",
              "version": "ace45bec6d77bc061c3c3d8ad99e298ea9800c2b",
              "versionType": "git"
            },
            {
              "lessThan": "cd8aef1f30d1215648e4e6686cfb422004851429",
              "status": "affected",
              "version": "ace45bec6d77bc061c3c3d8ad99e298ea9800c2b",
              "versionType": "git"
            },
            {
              "lessThan": "1946014ca3b19be9e485e780e862c375c6f98bad",
              "status": "affected",
              "version": "ace45bec6d77bc061c3c3d8ad99e298ea9800c2b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/rxrpc/net_ns.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.17"
            },
            {
              "lessThan": "4.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.238",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.238",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.189",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.111",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.34",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16.20",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.3",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: fix a race in rxrpc_exit_net()\n\nCurrent code can lead to the following race:\n\nCPU0                                                 CPU1\n\nrxrpc_exit_net()\n                                                     rxrpc_peer_keepalive_worker()\n                                                       if (rxnet-\u003elive)\n\n  rxnet-\u003elive = false;\n  del_timer_sync(\u0026rxnet-\u003epeer_keepalive_timer);\n\n                                                             timer_reduce(\u0026rxnet-\u003epeer_keepalive_timer, jiffies + delay);\n\n  cancel_work_sync(\u0026rxnet-\u003epeer_keepalive_work);\n\nrxrpc_exit_net() exits while peer_keepalive_timer is still armed,\nleading to use-after-free.\n\nsyzbot report was:\n\nODEBUG: free active (active state 0) object type: timer_list hint: rxrpc_peer_keepalive_timeout+0x0/0xb0\nWARNING: CPU: 0 PID: 3660 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505\nModules linked in:\nCPU: 0 PID: 3660 Comm: kworker/u4:6 Not tainted 5.17.0-syzkaller-13993-g88e6c0207623 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nWorkqueue: netns cleanup_net\nRIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505\nCode: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 00 1c 26 8a 4c 89 ee 48 c7 c7 00 10 26 8a e8 b1 e7 28 05 \u003c0f\u003e 0b 83 05 15 eb c5 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3\nRSP: 0018:ffffc9000353fb00 EFLAGS: 00010082\nRAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000\nRDX: ffff888029196140 RSI: ffffffff815efad8 RDI: fffff520006a7f52\nRBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000\nR10: ffffffff815ea4ae R11: 0000000000000000 R12: ffffffff89ce23e0\nR13: ffffffff8a2614e0 R14: ffffffff816628c0 R15: dffffc0000000000\nFS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fe1f2908924 CR3: 0000000043720000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n __debug_check_no_obj_freed lib/debugobjects.c:992 [inline]\n debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1023\n kfree+0xd6/0x310 mm/slab.c:3809\n ops_free_list.part.0+0x119/0x370 net/core/net_namespace.c:176\n ops_free_list net/core/net_namespace.c:174 [inline]\n cleanup_net+0x591/0xb00 net/core/net_namespace.c:598\n process_one_work+0x996/0x1610 kernel/workqueue.c:2289\n worker_thread+0x665/0x1080 kernel/workqueue.c:2436\n kthread+0x2e9/0x3a0 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298\n \u003c/TASK\u003e"
        }
      ],
      "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 triggered only during rxrpc_exit_net() on network-namespace teardown after a local AF_RXRPC socket arms the keepalive timer; remote RxRPC/AFS packets do not invoke this exit path.\nAC:L - The attacker controls both sides of the race by creating an AF_RXRPC socket (which starts the keepalive timer/worker) and destroying their own netns to run rxrpc_exit_net(), and can retry until the TOCTOU window is hit.\nPR:L - An unprivileged user can unshare a user+net namespace (CAP_SYS_ADMIN in their userns) and open AF_RXRPC sockets with no capability checks in rxrpc_create(), which is sufficient to arm the timer and trigger cleanup.\nUI:N - No victim action is required; the attacker alone creates the socket and tears down the netns to hit the race.\nS:U - This is a standard in-kernel UAF enabling local privilege escalation within the same kernel authority, not a VM/IOMMU/sandbox boundary crossing.\nC:H - Use-after-free of the timer embedded in freed rxrpc_net/net_generic memory can be reclaimed and leveraged for arbitrary kernel memory disclosure primitives.\nI:H - A pending timer UAF is a classic control-flow hijack primitive (timer callback on reclaimed memory), enabling arbitrary write/code execution in the kernel.\nA:H - The race frees an armed timer_list (syzbot: ODEBUG free active timer), causing kernel warnings/oops or a crash when the stale timer later fires."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:53:49.787Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/864297ee30727ae6233f80296b7fc91442620b05"
        },
        {
          "url": "https://git.kernel.org/stable/c/7ee84d29f22de6f6c63fad6c54690517659862f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/08ff0e74fab517dbc44e11b8bc683dd4ecc65950"
        },
        {
          "url": "https://git.kernel.org/stable/c/571d8e1d154ca18f08dcb72b69318d36e10010a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/41024a40f6c793abbb916a857f18fb009f07464c"
        },
        {
          "url": "https://git.kernel.org/stable/c/cd8aef1f30d1215648e4e6686cfb422004851429"
        },
        {
          "url": "https://git.kernel.org/stable/c/1946014ca3b19be9e485e780e862c375c6f98bad"
        }
      ],
      "title": "rxrpc: fix a race in rxrpc_exit_net()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49087",
    "datePublished": "2025-02-26T01:54:44.557Z",
    "dateReserved": "2025-02-26T01:49:39.248Z",
    "dateUpdated": "2026-08-05T08:53:49.787Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49087",
      "date": "2026-09-14",
      "epss": "0.00248",
      "percentile": "0.16209"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49087\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:00:46.043\",\"lastModified\":\"2026-06-17T05:17:02.637\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nrxrpc: fix a race in rxrpc_exit_net()\\n\\nCurrent code can lead to the following race:\\n\\nCPU0                                                 CPU1\\n\\nrxrpc_exit_net()\\n                                                     rxrpc_peer_keepalive_worker()\\n                                                       if (rxnet-\u003elive)\\n\\n  rxnet-\u003elive = false;\\n  del_timer_sync(\u0026rxnet-\u003epeer_keepalive_timer);\\n\\n                                                             timer_reduce(\u0026rxnet-\u003epeer_keepalive_timer, jiffies + delay);\\n\\n  cancel_work_sync(\u0026rxnet-\u003epeer_keepalive_work);\\n\\nrxrpc_exit_net() exits while peer_keepalive_timer is still armed,\\nleading to use-after-free.\\n\\nsyzbot report was:\\n\\nODEBUG: free active (active state 0) object type: timer_list hint: rxrpc_peer_keepalive_timeout+0x0/0xb0\\nWARNING: CPU: 0 PID: 3660 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505\\nModules linked in:\\nCPU: 0 PID: 3660 Comm: kworker/u4:6 Not tainted 5.17.0-syzkaller-13993-g88e6c0207623 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nWorkqueue: netns cleanup_net\\nRIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505\\nCode: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 00 1c 26 8a 4c 89 ee 48 c7 c7 00 10 26 8a e8 b1 e7 28 05 \u003c0f\u003e 0b 83 05 15 eb c5 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3\\nRSP: 0018:ffffc9000353fb00 EFLAGS: 00010082\\nRAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000\\nRDX: ffff888029196140 RSI: ffffffff815efad8 RDI: fffff520006a7f52\\nRBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000\\nR10: ffffffff815ea4ae R11: 0000000000000000 R12: ffffffff89ce23e0\\nR13: ffffffff8a2614e0 R14: ffffffff816628c0 R15: dffffc0000000000\\nFS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007fe1f2908924 CR3: 0000000043720000 CR4: 00000000003506f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n \u003cTASK\u003e\\n __debug_check_no_obj_freed lib/debugobjects.c:992 [inline]\\n debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1023\\n kfree+0xd6/0x310 mm/slab.c:3809\\n ops_free_list.part.0+0x119/0x370 net/core/net_namespace.c:176\\n ops_free_list net/core/net_namespace.c:174 [inline]\\n cleanup_net+0x591/0xb00 net/core/net_namespace.c:598\\n process_one_work+0x996/0x1610 kernel/workqueue.c:2289\\n worker_thread+0x665/0x1080 kernel/workqueue.c:2436\\n kthread+0x2e9/0x3a0 kernel/kthread.c:376\\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298\\n \u003c/TASK\u003e\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rxrpc: se corrige una ejecuci\u00f3n en rxrpc_exit_net() El c\u00f3digo actual puede llevar a la siguiente ejecuci\u00f3n: CPU0 CPU1 rxrpc_exit_net() rxrpc_peer_keepalive_worker() if (rxnet-\u0026gt;live) rxnet-\u0026gt;live = false; del_timer_sync(\u0026amp;rxnet-\u0026gt;peer_keepalive_timer); timer_reduce(\u0026amp;rxnet-\u0026gt;peer_keepalive_timer, jiffies + delay); cancel_work_sync(\u0026amp;rxnet-\u0026gt;peer_keepalive_work); rxrpc_exit_net() sale mientras peer_keepalive_timer todav\u00eda est\u00e1 armado, lo que lleva a un use-after-free. El informe de syzbot fue: ODEBUG: activo libre (estado activo 0) tipo de objeto: timer_list sugerencia: rxrpc_peer_keepalive_timeout+0x0/0xb0 ADVERTENCIA: CPU: 0 PID: 3660 en lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 M\u00f3dulos vinculados en: CPU: 0 PID: 3660 Comm: kworker/u4:6 No contaminado 5.17.0-syzkaller-13993-g88e6c0207623 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Cola de trabajo: netns cleanup_net RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505 C\u00f3digo: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 00 1c 26 8a 4c 89 ee 48 c7 c7 00 10 26 8a e8 b1 e7 28 05 \u0026lt;0f\u0026gt; 0b 83 05 15 eb c5 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc9000353fb00 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 00000000000000003 RCX: 0000000000000000 RDX: ffff888029196140 RSI: ffffffff815efad8 RDI: fffff520006a7f52 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ea4ae R11: 0000000000000000 R12: ffffffff89ce23e0 R13: ffffffff8a2614e0 R14: ffffffff816628c0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe1f2908924 CR3: 0000000043720000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 00000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas:  __debug_check_no_obj_freed lib/debugobjects.c:992 [en l\u00ednea] debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1023 kfree+0xd6/0x310 mm/slab.c:3809 ops_free_list.part.0+0x119/0x370 net/core/net_namespace.c:176 ops_free_list net/core/net_namespace.c:174 [en l\u00ednea] cleanup_net+0x591/0xb00 net/core/net_namespace.c:598 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/rxrpc/net_ns.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\",\"lessThan\":\"864297ee30727ae6233f80296b7fc91442620b05\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\",\"lessThan\":\"7ee84d29f22de6f6c63fad6c54690517659862f1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\",\"lessThan\":\"08ff0e74fab517dbc44e11b8bc683dd4ecc65950\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\",\"lessThan\":\"571d8e1d154ca18f08dcb72b69318d36e10010a0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\",\"lessThan\":\"41024a40f6c793abbb916a857f18fb009f07464c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\",\"lessThan\":\"cd8aef1f30d1215648e4e6686cfb422004851429\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\",\"lessThan\":\"1946014ca3b19be9e485e780e862c375c6f98bad\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/rxrpc/net_ns.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.238\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.189\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.111\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.34\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.16.20\",\"lessThanOrEqual\":\"5.16.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17.3\",\"lessThanOrEqual\":\"5.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-02-27T18:17:30.562104Z\",\"id\":\"CVE-2022-49087\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.17\",\"versionEndExcluding\":\"4.19.238\",\"matchCriteriaId\":\"E81609D6-22A9-44E6-A18A-6CEE1B7F0445\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.189\",\"matchCriteriaId\":\"8CB6E8F5-C2B1-46F3-A807-0F6104AC340F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.111\",\"matchCriteriaId\":\"96258501-7BCE-4C55-8A38-8AC9D327626D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.34\",\"matchCriteriaId\":\"D25878D3-7761-4E9F-8919-E92CD53896E0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.20\",\"matchCriteriaId\":\"ABBBA66E-0244-4621-966B-9790AF1EEB00\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17\",\"versionEndExcluding\":\"5.17.3\",\"matchCriteriaId\":\"AE420AC7-1E59-4398-B84F-71F4B4337762\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"6AD94161-84BB-42E6-9882-4FC0C42E9FC1\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/08ff0e74fab517dbc44e11b8bc683dd4ecc65950\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1946014ca3b19be9e485e780e862c375c6f98bad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/41024a40f6c793abbb916a857f18fb009f07464c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/571d8e1d154ca18f08dcb72b69318d36e10010a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7ee84d29f22de6f6c63fad6c54690517659862f1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/864297ee30727ae6233f80296b7fc91442620b05\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cd8aef1f30d1215648e4e6686cfb422004851429\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T20:57:30+00:00",
      "cve": "CVE-2022-49087",
      "id": "CVE-2022-49087",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "201",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "166",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: rxrpc: fix a race in rxrpc_exit_net()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49087.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T12:44:32Z",
      "cve": "CVE-2022-49087",
      "id": "CVE-2022-49087",
      "initial_release_date": "2025-02-27T03:12:29Z",
      "product_status:known_affected": "197",
      "product_status:known_not_affected": "272",
      "product_status:recommended": "27",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49087",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49087.json",
      "version": "15"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49087\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T18:17:30.562104Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-27T18:17:31.839Z\"}}], \"cna\": {\"title\": \"rxrpc: fix a race in rxrpc_exit_net()\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"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\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The bug is triggered only during rxrpc_exit_net() on network-namespace teardown after a local AF_RXRPC socket arms the keepalive timer; remote RxRPC/AFS packets do not invoke this exit path.\\nAC:L - The attacker controls both sides of the race by creating an AF_RXRPC socket (which starts the keepalive timer/worker) and destroying their own netns to run rxrpc_exit_net(), and can retry until the TOCTOU window is hit.\\nPR:L - An unprivileged user can unshare a user+net namespace (CAP_SYS_ADMIN in their userns) and open AF_RXRPC sockets with no capability checks in rxrpc_create(), which is sufficient to arm the timer and trigger cleanup.\\nUI:N - No victim action is required; the attacker alone creates the socket and tears down the netns to hit the race.\\nS:U - This is a standard in-kernel UAF enabling local privilege escalation within the same kernel authority, not a VM/IOMMU/sandbox boundary crossing.\\nC:H - Use-after-free of the timer embedded in freed rxrpc_net/net_generic memory can be reclaimed and leveraged for arbitrary kernel memory disclosure primitives.\\nI:H - A pending timer UAF is a classic control-flow hijack primitive (timer callback on reclaimed memory), enabling arbitrary write/code execution in the kernel.\\nA:H - The race frees an armed timer_list (syzbot: ODEBUG free active timer), causing kernel warnings/oops or a crash when the stale timer later fires.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\", \"lessThan\": \"864297ee30727ae6233f80296b7fc91442620b05\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\", \"lessThan\": \"7ee84d29f22de6f6c63fad6c54690517659862f1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\", \"lessThan\": \"08ff0e74fab517dbc44e11b8bc683dd4ecc65950\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\", \"lessThan\": \"571d8e1d154ca18f08dcb72b69318d36e10010a0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\", \"lessThan\": \"41024a40f6c793abbb916a857f18fb009f07464c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\", \"lessThan\": \"cd8aef1f30d1215648e4e6686cfb422004851429\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b\", \"lessThan\": \"1946014ca3b19be9e485e780e862c375c6f98bad\", \"versionType\": \"git\"}], \"programFiles\": [\"net/rxrpc/net_ns.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.17\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.17\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.238\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.189\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.111\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.34\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.20\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/rxrpc/net_ns.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/864297ee30727ae6233f80296b7fc91442620b05\"}, {\"url\": \"https://git.kernel.org/stable/c/7ee84d29f22de6f6c63fad6c54690517659862f1\"}, {\"url\": \"https://git.kernel.org/stable/c/08ff0e74fab517dbc44e11b8bc683dd4ecc65950\"}, {\"url\": \"https://git.kernel.org/stable/c/571d8e1d154ca18f08dcb72b69318d36e10010a0\"}, {\"url\": \"https://git.kernel.org/stable/c/41024a40f6c793abbb916a857f18fb009f07464c\"}, {\"url\": \"https://git.kernel.org/stable/c/cd8aef1f30d1215648e4e6686cfb422004851429\"}, {\"url\": \"https://git.kernel.org/stable/c/1946014ca3b19be9e485e780e862c375c6f98bad\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nrxrpc: fix a race in rxrpc_exit_net()\\n\\nCurrent code can lead to the following race:\\n\\nCPU0                                                 CPU1\\n\\nrxrpc_exit_net()\\n                                                     rxrpc_peer_keepalive_worker()\\n                                                       if (rxnet-\u003elive)\\n\\n  rxnet-\u003elive = false;\\n  del_timer_sync(\u0026rxnet-\u003epeer_keepalive_timer);\\n\\n                                                             timer_reduce(\u0026rxnet-\u003epeer_keepalive_timer, jiffies + delay);\\n\\n  cancel_work_sync(\u0026rxnet-\u003epeer_keepalive_work);\\n\\nrxrpc_exit_net() exits while peer_keepalive_timer is still armed,\\nleading to use-after-free.\\n\\nsyzbot report was:\\n\\nODEBUG: free active (active state 0) object type: timer_list hint: rxrpc_peer_keepalive_timeout+0x0/0xb0\\nWARNING: CPU: 0 PID: 3660 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505\\nModules linked in:\\nCPU: 0 PID: 3660 Comm: kworker/u4:6 Not tainted 5.17.0-syzkaller-13993-g88e6c0207623 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nWorkqueue: netns cleanup_net\\nRIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505\\nCode: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 00 1c 26 8a 4c 89 ee 48 c7 c7 00 10 26 8a e8 b1 e7 28 05 \u003c0f\u003e 0b 83 05 15 eb c5 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3\\nRSP: 0018:ffffc9000353fb00 EFLAGS: 00010082\\nRAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000\\nRDX: ffff888029196140 RSI: ffffffff815efad8 RDI: fffff520006a7f52\\nRBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000\\nR10: ffffffff815ea4ae R11: 0000000000000000 R12: ffffffff89ce23e0\\nR13: ffffffff8a2614e0 R14: ffffffff816628c0 R15: dffffc0000000000\\nFS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007fe1f2908924 CR3: 0000000043720000 CR4: 00000000003506f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n \u003cTASK\u003e\\n __debug_check_no_obj_freed lib/debugobjects.c:992 [inline]\\n debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1023\\n kfree+0xd6/0x310 mm/slab.c:3809\\n ops_free_list.part.0+0x119/0x370 net/core/net_namespace.c:176\\n ops_free_list net/core/net_namespace.c:174 [inline]\\n cleanup_net+0x591/0xb00 net/core/net_namespace.c:598\\n process_one_work+0x996/0x1610 kernel/workqueue.c:2289\\n worker_thread+0x665/0x1080 kernel/workqueue.c:2436\\n kthread+0x2e9/0x3a0 kernel/kthread.c:376\\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298\\n \u003c/TASK\u003e\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.238\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.189\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.111\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.34\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.20\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.3\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18\", \"versionStartIncluding\": \"4.17\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:53:49.787Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49087\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:53:49.787Z\", \"dateReserved\": \"2025-02-26T01:49:39.248Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T01:54:44.557Z\", \"assignerShortName\": \"Linux\"}",
      "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.