{"schema":"threatline.record/2","record":{"id":"CVE-2026-98383","aliases":[],"summary":"bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL\n\nAn LWT_SEG6LOCAL program can invalidate its cached SRH with\nbpf_lwt_seg6_adjust_srh() and then call bpf_skb_pull_data(). The latter\nmay reallocate skb->head, leaving the per-CPU SRH pointer dangling.\nPost-program SRH validation then writes through that pointer.\n\nDisallow bpf_skb_pull_data() for LWT_SEG6LOCAL programs so the verifier\nrejects this unsafe helper combination. Other LWT program types continue\nto expose the helper through lwt_out_func_proto().","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98383","source_modified_at":"2026-10-24T14:08:40.964Z","fetched_at":"2026-10-24T14:26:37.433577Z","product":"Linux","vendor":"Linux","versions":[{"version":"004d4b274e2a1a895a0e5dc66158b90a7d463d44","lessThan":"0f38472a2aa8704a6b514c0dfa9c32f3672b8f32","status":"affected","versionType":"git"},{"version":"004d4b274e2a1a895a0e5dc66158b90a7d463d44","lessThan":"cae8674489f26edf7553fdd660599466cbb4c32f","status":"affected","versionType":"git"},{"version":"004d4b274e2a1a895a0e5dc66158b90a7d463d44","lessThan":"9f9e57b5a3a033f95f49ef9d541340cdbcb80abb","status":"affected","versionType":"git"},{"version":"004d4b274e2a1a895a0e5dc66158b90a7d463d44","lessThan":"df0072be6fc373cb22f9ea854d458b04e32a03cf","status":"affected","versionType":"git"},{"version":"004d4b274e2a1a895a0e5dc66158b90a7d463d44","lessThan":"b9bb0e735460751b620156f800a4279a28573392","status":"affected","versionType":"git"},{"version":"004d4b274e2a1a895a0e5dc66158b90a7d463d44","lessThan":"37b18688cd18fd86d2f35c212df1611862a26cd5","status":"affected","versionType":"git"},{"version":"004d4b274e2a1a895a0e5dc66158b90a7d463d44","lessThan":"fca71ead7a20290af1e2046983eeafae43d21af1","status":"affected","versionType":"git"},{"version":"004d4b274e2a1a895a0e5dc66158b90a7d463d44","lessThan":"e4a62833adff6ef0fe7c0b90393204fe3c26b5c5","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98383","source_modified_at":"2026-10-24T14:08:40.964Z","fetched_at":"2026-10-24T14:26:37.433577Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.18","status":"affected"},{"version":"0","lessThan":"4.18","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-2026-98383","source_modified_at":"2026-10-24T14:08:40.964Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"0f38472a2aa8704a6b514c0dfa9c32f3672b8f32","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98383","source_modified_at":"2026-10-24T14:08:40.964Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"9f9e57b5a3a033f95f49ef9d541340cdbcb80abb","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98383","source_modified_at":"2026-10-24T14:08:40.964Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"37b18688cd18fd86d2f35c212df1611862a26cd5","basis":"first unaffected version stated in the CVE record"}],"cvss":7.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00164,"percentile":0.05358,"score_date":"2026-10-23"},"published_at":"2026-10-09T07:34:22.408Z","modified_at":"2026-10-24T14:08:40.964Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98383","fetched_at":"2026-10-24T14:26:37.433577Z","source_modified_at":"2026-10-24T14:08:40.964Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98383","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/0f38472a2aa8704a6b514c0dfa9c32f3672b8f32"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/cae8674489f26edf7553fdd660599466cbb4c32f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/9f9e57b5a3a033f95f49ef9d541340cdbcb80abb"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/df0072be6fc373cb22f9ea854d458b04e32a03cf"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b9bb0e735460751b620156f800a4279a28573392"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/37b18688cd18fd86d2f35c212df1611862a26cd5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/fca71ead7a20290af1e2046983eeafae43d21af1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e4a62833adff6ef0fe7c0b90393204fe3c26b5c5"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-24T14:08:40.964Z","content_hash":"a9e68d2dcdf27f9c970caa0744ce99d3bc13ae6cd2cff95be013d2f3e1d50cc1"}}