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CVE-2025-38717 net: kcm: Fix race condition in kcm_unattach()

🗓️ 04 Sep 2025 15:33:11Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

Fix race between kcm_unattach and kcm_release by removing tx_stopped and using disable_work_sync.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/kcm.h",
      "net/kcm/kcmsock.c"
    ],
    "versions": [
      {
        "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
        "lessThan": "c0bffbc92a1ca3960fb9cdb8e9f75a68468eb308",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
        "lessThan": "7275dc3bb8f91b23125ff3f47b6529935cf46152",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
        "lessThan": "798733ee5d5788b12e8a52db1519abc17e826f69",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
        "lessThan": "52565a935213cd6a8662ddb8efe5b4219343a25d",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/kcm.h",
      "net/kcm/kcmsock.c"
    ],
    "versions": [
      {
        "version": "4.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.6",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.43",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.15.11",
        "lessThanOrEqual": "6.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.16.2",
        "lessThanOrEqual": "6.16.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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