{"schema":"threatline.record/2","record":{"id":"CVE-2026-98062","aliases":[],"summary":"bpf: Mark signal tracepoint siginfo arguments as scalar","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark signal tracepoint siginfo arguments as scalar\n\nThe signal_generate and signal_deliver tracepoints declare their info\nargument as a struct kernel_siginfo pointer. btf_ctx_access() therefore\ntreats it as a trusted pointer for tp_btf programs.\n\nSignal delivery also uses SEND_SIG_NOINFO and SEND_SIG_PRIV as special\nvalues for this argument. Those values are zero and one respectively,\nand are not pointers. A tp_btf program can currently dereference either\nvalue and fault the kernel. In particular, signal_generate can run from\ntimer interrupt context, turning the fault into a kernel panic.\n\nRecord both tracepoints in raw_tp_null_args[] and mark argument one as\na non-pointer. This preserves scalar access to the cookie while rejecting\ndirect and helper-mediated pointer use. Merely marking it nullable would\nnot suffice because SEND_SIG_PRIV is nonzero.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98062","source_modified_at":"2026-10-21T12:54:20.506Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"b2fc4b17fc13810ef440fb323fad3981cd174985","lessThan":"05757377fa0447163d07c43a119f81abe1eef8dc","status":"affected","versionType":"git"},{"version":"838a10bd2ebfe11a60dd67687533a7cfc220cc86","lessThan":"0e78cb242a57e481061fcb542fed4d51afba25c4","status":"affected","versionType":"git"},{"version":"838a10bd2ebfe11a60dd67687533a7cfc220cc86","lessThan":"d2eaea3599bcce659ce91862254dc91bcbdb6351","status":"affected","versionType":"git"},{"version":"838a10bd2ebfe11a60dd67687533a7cfc220cc86","lessThan":"77515ab12e4983e6416f8c35039a3f0c0822ac70","status":"affected","versionType":"git"},{"version":"6.12.6","lessThan":"6.12.114","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98062","source_modified_at":"2026-10-21T12:54:20.506Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.13","status":"affected"},{"version":"0","lessThan":"6.13","status":"unaffected","versionType":"semver"},{"version":"6.12.114","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","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-2026-98062","source_modified_at":"2026-10-21T12:54:20.506Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"05757377fa0447163d07c43a119f81abe1eef8dc","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98062","source_modified_at":"2026-10-21T12:54:20.506Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"0e78cb242a57e481061fcb542fed4d51afba25c4","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98062","source_modified_at":"2026-10-21T12:54:20.506Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"77515ab12e4983e6416f8c35039a3f0c0822ac70","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98062","source_modified_at":"2026-10-21T12:54:20.506Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.12.114","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00122,"percentile":0.01828,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:24:06.597Z","modified_at":"2026-10-21T12:54:20.506Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98062","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:54:20.506Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98062","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/05757377fa0447163d07c43a119f81abe1eef8dc"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/0e78cb242a57e481061fcb542fed4d51afba25c4"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d2eaea3599bcce659ce91862254dc91bcbdb6351"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/77515ab12e4983e6416f8c35039a3f0c0822ac70"}],"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":"2026-10-21T12:54:20.506Z","content_hash":"03cff100e474f7bdd2722f36ecf331503e80317c933ee8e2d57fea743bdf57e0"}}