{"schema":"threatline.record/2","record":{"id":"CVE-2026-98816","aliases":[],"summary":"bpf: Fix overflow of jump offset in constant blinding","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix overflow of jump offset in constant blinding\n\nbpf_jit_blind_insn() rewrites 'if rX op imm goto off' into:\n\n  AX = imm ^ rnd\n  AX ^= rnd\n  if rX op AX goto off\n\nand subtracts 2 from off when the jump is backward. off is s16, so\n-32767 and -32768 wrap and the jump goes 32767 insns forward, past the\nend of the prog. The jump is inside the patch, hence bpf_adj_branches()\ndoesn't check it. The kernel crashes when such prog runs with\nbpf_jit_harden=2.\n\nReturn -ERANGE in such case. bpf_jit_blind_constants() fails the same\nway when blinding of other insns moves a jump out of range.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98816","source_modified_at":"2026-10-19T09:26:09.337Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4f3446bb809f20ad56cadf712e6006815ae7a8f9","lessThan":"443328237113ee0ea515e506497334d871dbc2aa","status":"affected","versionType":"git"},{"version":"4f3446bb809f20ad56cadf712e6006815ae7a8f9","lessThan":"ad139384ecddb6f3e7e3c3c12765aafae0e39670","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98816","source_modified_at":"2026-10-19T09:26:09.337Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.7","status":"affected"},{"version":"0","lessThan":"4.7","status":"unaffected","versionType":"semver"},{"version":"7.2.10","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-2026-98816","source_modified_at":"2026-10-19T09:26:09.337Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"443328237113ee0ea515e506497334d871dbc2aa","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00162,"percentile":0.05094,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:49:05.616Z","modified_at":"2026-10-19T09:26:09.337Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98816","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:26:09.337Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98816","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/443328237113ee0ea515e506497334d871dbc2aa"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/ad139384ecddb6f3e7e3c3c12765aafae0e39670"}],"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":"2026-10-19T09:26:09.337Z","content_hash":"332c09f131efce462e530f9f03135fef76e6f6023e79de9fe910bb17156691c9"}}