CVE-2024-54683 (GCVE-0-2024-54683)

Vulnerability from cvelistv5 – Published: 2025-01-11 12:29 – Updated: 2026-10-30 12:20
VLAI
Title
netfilter: IDLETIMER: Fix for possible ABBA deadlock
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: IDLETIMER: Fix for possible ABBA deadlock Deletion of the last rule referencing a given idletimer may happen at the same time as a read of its file in sysfs: | ====================================================== | WARNING: possible circular locking dependency detected | 6.12.0-rc7-01692-g5e9a28f41134-dirty #594 Not tainted | ------------------------------------------------------ | iptables/3303 is trying to acquire lock: | ffff8881057e04b8 (kn->active#48){++++}-{0:0}, at: __kernfs_remove+0x20 | | but task is already holding lock: | ffffffffa0249068 (list_mutex){+.+.}-{3:3}, at: idletimer_tg_destroy_v] | | which lock already depends on the new lock. A simple reproducer is: | #!/bin/bash | | while true; do | iptables -A INPUT -i foo -j IDLETIMER --timeout 10 --label "testme" | iptables -D INPUT -i foo -j IDLETIMER --timeout 10 --label "testme" | done & | while true; do | cat /sys/class/xt_idletimer/timers/testme >/dev/null | done Avoid this by freeing list_mutex right after deleting the element from the list, then continuing with the teardown.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:55 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0902b469bd25065aa0688c3cee6f11744c817e7c , < 5493d84a40f0e61da74e1b0db640845997836b4e (git)
Affected: 0902b469bd25065aa0688c3cee6f11744c817e7c , < 8c2c8445cda8f59c38dec7dc10509bcb23ae26a0 (git)
Affected: 0902b469bd25065aa0688c3cee6f11744c817e7c , < 45fe76573a2557f632e248cc141342233f422b9a (git)
Affected: 0902b469bd25065aa0688c3cee6f11744c817e7c , < f36b01994d68ffc253c8296e2228dfe6e6431c03 (git)
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Linux Linux Affected: 2.6.36
Unaffected: 0 , < 2.6.36 (semver)
Unaffected: 6.1.191 , ≤ 6.1.* (semver)
Unaffected: 6.6.67 , ≤ 6.6.* (semver)
Unaffected: 6.12.6 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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      "status": "final",
      "title": "kernel: netfilter: IDLETIMER: Fix for possible ABBA deadlock",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-54683.json",
      "version": "3"
    },
    "vulnrichment": {
      "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-2024-54683",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-01T19:55:27.468543Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-667",
                    "description": "CWE-667 Improper Locking",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T15:53:07.135Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "net/netfilter/xt_IDLETIMER.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "5493d84a40f0e61da74e1b0db640845997836b4e",
                  "status": "affected",
                  "version": "0902b469bd25065aa0688c3cee6f11744c817e7c",
                  "versionType": "git"
                },
                {
                  "lessThan": "8c2c8445cda8f59c38dec7dc10509bcb23ae26a0",
                  "status": "affected",
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                  "versionType": "git"
                },
                {
                  "lessThan": "45fe76573a2557f632e248cc141342233f422b9a",
                  "status": "affected",
                  "version": "0902b469bd25065aa0688c3cee6f11744c817e7c",
                  "versionType": "git"
                },
                {
                  "lessThan": "f36b01994d68ffc253c8296e2228dfe6e6431c03",
                  "status": "affected",
                  "version": "0902b469bd25065aa0688c3cee6f11744c817e7c",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/netfilter/xt_IDLETIMER.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "2.6.36"
                },
                {
                  "lessThan": "2.6.36",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.191",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.67",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.6",
                  "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": "6.1.191",
                      "versionStartIncluding": "2.6.36",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.67",
                      "versionStartIncluding": "2.6.36",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: IDLETIMER: Fix for possible ABBA deadlock\n\nDeletion of the last rule referencing a given idletimer may happen at\nthe same time as a read of its file in sysfs:\n\n| ======================================================\n| WARNING: possible circular locking dependency detected\n| 6.12.0-rc7-01692-g5e9a28f41134-dirty #594 Not tainted\n| ------------------------------------------------------\n| iptables/3303 is trying to acquire lock:\n| ffff8881057e04b8 (kn-\u003eactive#48){++++}-{0:0}, at: __kernfs_remove+0x20\n|\n| but task is already holding lock:\n| ffffffffa0249068 (list_mutex){+.+.}-{3:3}, at: idletimer_tg_destroy_v]\n|\n| which lock already depends on the new lock.\n\nA simple reproducer is:\n\n| #!/bin/bash\n|\n| while true; do\n|         iptables -A INPUT -i foo -j IDLETIMER --timeout 10 --label \"testme\"\n|         iptables -D INPUT -i foo -j IDLETIMER --timeout 10 --label \"testme\"\n| done \u0026\n| while true; do\n|         cat /sys/class/xt_idletimer/timers/testme \u003e/dev/null\n| done\n\nAvoid this by freeing list_mutex right after deleting the element from\nthe list, then continuing with the teardown."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-30T12:20:16.039Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
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          "references": [
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              "url": "https://git.kernel.org/stable/c/5493d84a40f0e61da74e1b0db640845997836b4e"
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            {
              "url": "https://git.kernel.org/stable/c/8c2c8445cda8f59c38dec7dc10509bcb23ae26a0"
            },
            {
              "url": "https://git.kernel.org/stable/c/45fe76573a2557f632e248cc141342233f422b9a"
            },
            {
              "url": "https://git.kernel.org/stable/c/f36b01994d68ffc253c8296e2228dfe6e6431c03"
            }
          ],
          "title": "netfilter: IDLETIMER: Fix for possible ABBA deadlock",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-54683",
        "datePublished": "2025-01-11T12:29:54.407Z",
        "dateReserved": "2025-01-09T09:49:29.693Z",
        "dateUpdated": "2026-10-30T12:20:16.039Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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