{"schema":"threatline.record/2","record":{"id":"CVE-2026-98526","aliases":[],"summary":"llc: reserve device headroom for allocated frames","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nllc: reserve device headroom for allocated frames\n\nllc_alloc_frame() reserves link-layer headroom using the device type.\nThis is insufficient for stacked Ethernet devices such as VLAN devices,\nwhere vlan_dev_hard_header() pushes a VLAN header before the lower\ndevice's Ethernet header. An LLC response on such a device can\ntherefore underflow skb headroom in eth_header().\n\nUse LL_RESERVED_SPACE() to account for the device's actual required\nheadroom while preserving the existing LLC device-type check.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98526","source_modified_at":"2026-10-19T09:21:07.983Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"bf9ae5386bca8836c16e69ab8fdbe46767d7452a","lessThan":"018020f5a48cc86fdd6dc2d380f6c70443ae7639","status":"affected","versionType":"git"},{"version":"bf9ae5386bca8836c16e69ab8fdbe46767d7452a","lessThan":"3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1","status":"affected","versionType":"git"},{"version":"bf9ae5386bca8836c16e69ab8fdbe46767d7452a","lessThan":"7c38524b2b2456bd33cb360420da6cbf9cad1b33","status":"affected","versionType":"git"},{"version":"bf9ae5386bca8836c16e69ab8fdbe46767d7452a","lessThan":"1937222c2511ac91377d39f28106c34734f5f8c6","status":"affected","versionType":"git"},{"version":"bf9ae5386bca8836c16e69ab8fdbe46767d7452a","lessThan":"16ceac2daa89dd16917bc488ab05b9dd6961a603","status":"affected","versionType":"git"},{"version":"bf9ae5386bca8836c16e69ab8fdbe46767d7452a","lessThan":"e06f8b6e27cc616d3c587e9784c4a033eb310a16","status":"affected","versionType":"git"},{"version":"bf9ae5386bca8836c16e69ab8fdbe46767d7452a","lessThan":"3361c93e417384ebf28003e0fb6d5304653d3b05","status":"affected","versionType":"git"},{"version":"bf9ae5386bca8836c16e69ab8fdbe46767d7452a","lessThan":"72b5b9a28b996e09b8b5b944370c79851bb68f52","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98526","source_modified_at":"2026-10-19T09:21:07.983Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"2.6.34","status":"affected"},{"version":"0","lessThan":"2.6.34","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":"6.1.189","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":"6.18.55","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.9","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98526","source_modified_at":"2026-10-19T09:21:07.983Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"018020f5a48cc86fdd6dc2d380f6c70443ae7639","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98526","source_modified_at":"2026-10-19T09:21:07.983Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98526","source_modified_at":"2026-10-19T09:21:07.983Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"7c38524b2b2456bd33cb360420da6cbf9cad1b33","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98526","source_modified_at":"2026-10-19T09:21:07.983Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"1937222c2511ac91377d39f28106c34734f5f8c6","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98526","source_modified_at":"2026-10-19T09:21:07.983Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"16ceac2daa89dd16917bc488ab05b9dd6961a603","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98526","source_modified_at":"2026-10-19T09:21:07.983Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"3361c93e417384ebf28003e0fb6d5304653d3b05","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98526","source_modified_at":"2026-10-19T09:21:07.983Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"72b5b9a28b996e09b8b5b944370c79851bb68f52","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.0022,"percentile":0.11804,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:17:44.018Z","modified_at":"2026-10-19T09:21:07.983Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98526","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:21:07.983Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98526","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/018020f5a48cc86fdd6dc2d380f6c70443ae7639"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/7c38524b2b2456bd33cb360420da6cbf9cad1b33"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/1937222c2511ac91377d39f28106c34734f5f8c6"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/16ceac2daa89dd16917bc488ab05b9dd6961a603"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e06f8b6e27cc616d3c587e9784c4a033eb310a16"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/3361c93e417384ebf28003e0fb6d5304653d3b05"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/72b5b9a28b996e09b8b5b944370c79851bb68f52"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:21:07.983Z","content_hash":"55a4cf42b30265bb4e35587111fac5bbfe982bd447377f064804973553bfed14"}}