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CVE-2023-53836 bpf, sockmap: Fix skb refcnt race after locking changes

🗓️ 09 Dec 2025 01:29:52Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 27 Views

Fixes a socket buffer race in the Linux kernel packet filter sockmap where references may race with user-space consumption.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/core/skmsg.c"
    ],
    "versions": [
      {
        "version": "799aa7f98d53e0f541fa6b4dc9aa47b4ff2178e3",
        "lessThan": "65ad600b9bde68d2d28709943ab00b51ca8f0a1d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "799aa7f98d53e0f541fa6b4dc9aa47b4ff2178e3",
        "lessThan": "923877254f002ae87d441382bb1096d9e773d56d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "799aa7f98d53e0f541fa6b4dc9aa47b4ff2178e3",
        "lessThan": "e6b5e47adb9166e732cdf7e6e034946e3f89f36d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "799aa7f98d53e0f541fa6b4dc9aa47b4ff2178e3",
        "lessThan": "a454d84ee20baf7bd7be90721b9821f73c7d23d9",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/core/skmsg.c"
    ],
    "versions": [
      {
        "version": "5.13",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.13",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.189",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.54",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.5.4",
        "lessThanOrEqual": "6.5.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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