{"schema":"threatline.record/2","record":{"id":"CVE-2026-99043","aliases":[],"summary":"ice: fix metadata_dst refcount handling on representor teardown","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix metadata_dst refcount handling on representor teardown\n\nice_eswitch_release_repr() uses metadata_dst_free() to release the\nrepresentor's metadata_dst.  metadata_dst_free() directly frees the\nunderlying memory without checking the dst_entry refcount.\n\nWhen ice_eswitch_port_start_xmit() processes a packet, it takes a\nreference via dst_hold() and attaches the metadata_dst to the skb.\nIf the representor is torn down while packets are still queued on\nthe lower device (e.g. in a qdisc), the metadata_dst is freed while\nreferences are still held.\n\nUse dst_release() instead, which correctly decrements the refcount\nand only frees the object when all references are dropped.  The dst\nsubsystem already handles metadata_dst cleanup in dst_destroy() when\nDST_METADATA is set.\n\nOther drivers sharing this pattern (nfp, airoha, bnxt) already use\ndst_release() for their metadata_dst lifecycle.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99043","source_modified_at":"2026-10-23T12:22:07.372Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"lessThan":"1f263235651775f93c15d90c9f25c3f4a4ef6512","status":"affected","version":"f5396b8a663f7a78ee5b75a47ee524b40795b265","versionType":"git"},{"lessThan":"6f5544f53f1e58ea8a49fb9f9158d5793b9205b0","status":"affected","version":"f5396b8a663f7a78ee5b75a47ee524b40795b265","versionType":"git"},{"lessThan":"beb05f484a1e4a5a66e3678e4b7f3147f651c080","status":"affected","version":"f5396b8a663f7a78ee5b75a47ee524b40795b265","versionType":"git"},{"lessThan":"5e4d20db5179e83a4948927bc39e489a9a83256d","status":"affected","version":"f5396b8a663f7a78ee5b75a47ee524b40795b265","versionType":"git"},{"lessThan":"58858b8f14803a7eeac297b3ce20f3b21bf2ff66","status":"affected","version":"f5396b8a663f7a78ee5b75a47ee524b40795b265","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99043","source_modified_at":"2026-10-23T12:22:07.372Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"status":"affected","version":"5.16"},{"lessThan":"5.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.160","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.57","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99043","source_modified_at":"2026-10-23T12:22:07.372Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"1f263235651775f93c15d90c9f25c3f4a4ef6512","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99043","source_modified_at":"2026-10-23T12:22:07.372Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"6f5544f53f1e58ea8a49fb9f9158d5793b9205b0","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99043","source_modified_at":"2026-10-23T12:22:07.372Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"5e4d20db5179e83a4948927bc39e489a9a83256d","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99043","source_modified_at":"2026-10-23T12:22:07.372Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"58858b8f14803a7eeac297b3ce20f3b21bf2ff66","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00209,"percentile":0.10474,"score_date":"2026-10-24"},"published_at":"2026-10-23T12:22:07.372Z","modified_at":"2026-10-23T12:22:07.372Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-99043","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T12:22:07.372Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-99043","fetched_at":"2026-10-24T18:03:20.872036Z","source_modified_at":"2026-10-24"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/1f263235651775f93c15d90c9f25c3f4a4ef6512"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6f5544f53f1e58ea8a49fb9f9158d5793b9205b0"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/beb05f484a1e4a5a66e3678e4b7f3147f651c080"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/5e4d20db5179e83a4948927bc39e489a9a83256d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/58858b8f14803a7eeac297b3ce20f3b21bf2ff66"}],"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":"2026-10-23T12:22:07.372Z","content_hash":"00358963801753d277277ef3aace1e41f57d39522ad0cd8a94addf488fe739c6"}}