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CVE-2026-80842

🗓️ 04 Sep 2026 15:54:52Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 7 Views

Use-after-free in Linux kernel bridge multicast context for master VLAN during teardown.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-80842 net: bridge: mcast: fix use-after-free of a master VLAN's multicast context
4 Sep 202615:54
cvelist
debiancve
Debian CVE
CVE-2026-80842
4 Sep 202615:54
debiancve
euvd
EUVD
EUVD-2026-71292
4 Sep 202615:54
euvd
nvd
NVD
CVE-2026-80842
4 Sep 202616:18
nvd
osv
OSV
DEBIAN-CVE-2026-80842
4 Sep 202616:18
osv
ptsecurity
Positive Technologies
PT-2026-85720
4 Sep 202600:00
ptsecurity
Vulners
CNA
Node
OR
linuxlinux_kernelRange5.155.15.220
linuxlinux_kernelRange5.16.06.1.187
linuxlinux_kernelRange6.2.06.6.156
linuxlinux_kernelRange6.7.06.12.108
linuxlinux_kernelRange6.13.06.18.49
linuxlinux_kernelRange6.19.07.1.13
linuxlinux_kernelRange7.2.07.2.3
linuxlinux_kernelRange7.3.07.3-rc1
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/bridge/br_multicast.c"
    ],
    "versions": [
      {
        "version": "7b54aaaf53cb784411426c64482af0435f7c845e",
        "lessThan": "3afaaee2f972aec9059110953adb62fa3cf5c4bd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7b54aaaf53cb784411426c64482af0435f7c845e",
        "lessThan": "22226a2c3b90f15b0925f1464470d3baa6c5677e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7b54aaaf53cb784411426c64482af0435f7c845e",
        "lessThan": "7c54fd8cfbcf371a5ef50db5c53fe6e85fb76686",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7b54aaaf53cb784411426c64482af0435f7c845e",
        "lessThan": "3a0ad4fcdfa0b7dba1876de14a12cb65c8b5ca50",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7b54aaaf53cb784411426c64482af0435f7c845e",
        "lessThan": "c069f29da72324697aa4b7cab5b3647a7d24a575",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7b54aaaf53cb784411426c64482af0435f7c845e",
        "lessThan": "3f4752996735e0628af559aa8da1d872c2fac13b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7b54aaaf53cb784411426c64482af0435f7c845e",
        "lessThan": "57f94d3f4dee8b54d63cefddf1112be4656ef9e6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7b54aaaf53cb784411426c64482af0435f7c845e",
        "lessThan": "50e5c6605cc9c2dd57bd2d1b3459674d19738983",
        "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/bridge/br_multicast.c"
    ],
    "versions": [
      {
        "version": "5.15",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.15",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.220",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.187",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.156",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.108",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.49",
        "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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04 Sep 2026 16:18Current
5.5Medium risk
Vulners AI Score5.5
7