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CVE-2026-74743

🗓️ 26 Aug 2026 14:36:54Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 114 Views

macvlan in Linux kernel fails to inherit headroom from lowerdev, enabling slab-use-after-free.

Related
Detection
Affected
Refs
Vulners
CNA
Node
OR
linuxlinux_kernelRange2.6.23–5.10.271
linuxlinux_kernelRange5.11.0–5.15.222
linuxlinux_kernelRange5.16.0–6.1.184
linuxlinux_kernelRange6.2.0–6.6.153
linuxlinux_kernelRange6.7.0–6.12.105
linuxlinux_kernelRange6.13.0–6.18.46
linuxlinux_kernelRange6.19.0–7.1.10
linuxlinux_kernelRange7.2.0≥
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/macvlan.c"
    ],
    "versions": [
      {
        "version": "b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53",
        "lessThan": "c2ef3f134b069c54b9cc95cce1a16c38c4939336",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53",
        "lessThan": "7b0eb3e0f363ca79a3af9efd2e87c6258f11da2b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53",
        "lessThan": "8cd90e850e434577bf6774778657d26d6995e53f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53",
        "lessThan": "28afc87bd8da0b3348bbbd834c8a89e83712cf5e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53",
        "lessThan": "8f6a05dbac05725e0786701eb04778c5bdbe4eaa",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53",
        "lessThan": "96fa90b74385b7f2b0d97251dd43d5ee6ca44668",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53",
        "lessThan": "bc9a00fb78e32bccc39d763bfd13a450705bac5d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53",
        "lessThan": "cef51860becd9700217c81732ca1eb1ea6ed6fe1",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/macvlan.c"
    ],
    "versions": [
      {
        "version": "2.6.23",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.23",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.271",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.222",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.184",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.153",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.105",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.46",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.10",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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03 Oct 2026 11:17Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.19.8
EPSS0.00734
114