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CVE-2026-74667 net/packet: reset the MAC header on the packet-socket transmit path

🗓️ 22 Aug 2026 15:32:38Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Linux kernel packet-socket QDISC_BYPASS path leaves MAC header unset, causing OOB read past skb head.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-74667
22 Aug 202615:32
cve
debiancve
Debian CVE
CVE-2026-74667
22 Aug 202615:32
debiancve
euvd
EUVD
EUVD-2026-64354
22 Aug 202615:32
euvd
nvd
NVD
CVE-2026-74667
22 Aug 202616:16
nvd
osv
OSV
DEBIAN-CVE-2026-74667
22 Aug 202619:47
osv
ptsecurity
Positive Technologies
PT-2026-79672
22 Aug 202600:00
ptsecurity
[
  {
    "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": "75c65772c3d18447d62d3aca5f91b06c16cc25e4",
        "lessThan": "1e43a1d66615f411d427f9df1f46dd049d9e3681",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "75c65772c3d18447d62d3aca5f91b06c16cc25e4",
        "lessThan": "4057853a91fb796c4f47c7d1baf1aa085394148e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "75c65772c3d18447d62d3aca5f91b06c16cc25e4",
        "lessThan": "2610ed4e86a4590234a9d70518c469751c5af231",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "75c65772c3d18447d62d3aca5f91b06c16cc25e4",
        "lessThan": "b47ba8fe6e1d2df8c92048de5afafd059447dc30",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "75c65772c3d18447d62d3aca5f91b06c16cc25e4",
        "lessThan": "284f3e7a3f1a743fdf89e304fd1f19d5ffcff46d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "75c65772c3d18447d62d3aca5f91b06c16cc25e4",
        "lessThan": "971aa7d99242bbf09513e27b7a243f0b29ff23ae",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "75c65772c3d18447d62d3aca5f91b06c16cc25e4",
        "lessThan": "fdd4d7d52358a58e351dd9d82530c04eba8ccd7a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "75c65772c3d18447d62d3aca5f91b06c16cc25e4",
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        "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": "5.1",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.1",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.265",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.216",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.183",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.152",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.104",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.45",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.9",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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