{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98301",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.337Z",
        "datePublished": "2026-10-06T08:45:58.908Z",
        "dateUpdated": "2026-10-19T09:17:12.171Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:17:12.171Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: mst: move switchdev call outside rcu\n\nThis is a follow-up of one of sashiko's pre-existing bug reports.\nbr_mst_set_state() calls switchdev_port_attr_set() for nonzero MSTIs\nwhile holding rcu_read_lock() which invokes the blocking switchdev\nnotifier chain and may sleep. Nonzero MSTI changes come from netlink\nwith rtnl held. Move the switchdev call before entering the rcu section and\nassert that rtnl is held.\n\nThe call cannot be deferred because netlink needs its error and extack.\nAlso DSA reads the old bridge MST state during the callback and checks it.\nA deferred callback will be late and will see the updated state."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/bridge/br_mst.c"
                    ],
                    "versions": [
                        {
                            "version": "8ca9a750fc711911ef616ceb627d07357b04545e",
                            "lessThan": "b9661fd2423fc25e91e0517ecc0b6156ad83e3a8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4488617e5e995a09abe4d81add5fb165674edb59",
                            "lessThan": "6b431b63219853eef4054e2f1cb073d2ca2059b4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3a7c1661ae1383364cd6092d851f5e5da64d476b",
                            "lessThan": "abf734d150c61acfdfee102169d0e5d1c482e285",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3a7c1661ae1383364cd6092d851f5e5da64d476b",
                            "lessThan": "d5c4ee1fa4e83a12afc051c831936cd8e006cde3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3a7c1661ae1383364cd6092d851f5e5da64d476b",
                            "lessThan": "c40ed3e884c8dc0350f26484030438ef24208ff1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3a7c1661ae1383364cd6092d851f5e5da64d476b",
                            "lessThan": "18a6fe05fb6e18de29fa90d388bb34044114b3d8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a2b01e65d9ba8af2bb086d3b7288ca53a07249ac",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e43dd2b1ec746e105b7db5f9ad6ef14685a615a4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.1.93",
                            "lessThan": "6.1.189",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.33",
                            "lessThan": "6.6.158",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.8.12",
                            "lessThan": "6.9",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.9.3",
                            "lessThan": "6.10",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/bridge/br_mst.c"
                    ],
                    "versions": [
                        {
                            "version": "6.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.54",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.8",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.1.189"
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                                    "versionEndExcluding": "7.3"
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                                    "versionStartIncluding": "6.9.3"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/b9661fd2423fc25e91e0517ecc0b6156ad83e3a8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6b431b63219853eef4054e2f1cb073d2ca2059b4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/abf734d150c61acfdfee102169d0e5d1c482e285"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d5c4ee1fa4e83a12afc051c831936cd8e006cde3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c40ed3e884c8dc0350f26484030438ef24208ff1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/18a6fe05fb6e18de29fa90d388bb34044114b3d8"
                }
            ],
            "title": "net: bridge: mst: move switchdev call outside rcu",
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}