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CVE-2026-80841 net/packet: defer vmalloc TX_RING free until skbs finish

🗓️ 04 Sep 2026 15:54:51Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 50 Views

Linux kernel AF_PACKET use-after-free when vmalloc TX_RING freed before skbs finish.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/packet/af_packet.c"
    ],
    "versions": [
      {
        "version": "b013840810c221f2b0cf641d01531526052dc1fb",
        "lessThan": "debf9f50140b3df3949ebcb97d4450f8993fe32d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b013840810c221f2b0cf641d01531526052dc1fb",
        "lessThan": "4ce6e2d2e38055b2012bd5fdb0c8a8183c8a1b0c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b013840810c221f2b0cf641d01531526052dc1fb",
        "lessThan": "ed25ed29034ddc3dbe451ccbaa58ab9932f99d8b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b013840810c221f2b0cf641d01531526052dc1fb",
        "lessThan": "0189dce07db2dc059ae0570e06758ec4233c6e11",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b013840810c221f2b0cf641d01531526052dc1fb",
        "lessThan": "550d00aa58193fb649a09a9c9e338c685adad784",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b013840810c221f2b0cf641d01531526052dc1fb",
        "lessThan": "992cc9f94ca924089a506ba9b327caa9af797529",
        "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/packet/af_packet.c"
    ],
    "versions": [
      {
        "version": "3.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.14",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.158",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.111",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.51",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.13",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.3",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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03 Oct 2026 10:56Current
EPSS0.00173
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