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net: bridge: mcast: fix use-after-free of a master VLAN's multicast context

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2026-80842

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "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"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "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",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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Sources read 9 Nov 05:32 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current