{"schema":"threatline.record/2","record":{"id":"CVE-2026-98248","aliases":[],"summary":"arm64: percpu: Fix LSE operations on {8,16}-bit types","details":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: percpu: Fix LSE operations on {8,16}-bit types\n\nThe assembly for __percpu_##name##_case_##sz() and\n__percpu_##name##_return_case_##sz() doesn't use the 'sfx' macro\nargument to form the LSE instruction. Without 'sfx', a W register\nargument will imply a 32-bit memory location, and consequently\n{8,16}-bit ops will erroneously read and write 32 bits of memory when\nthe LSE instruction is used.\n\nFix this by appending 'sfx' to 'op_lse' to LSE instruction. It is not\nnecessary (and not valid) to append 'sfx' to 'op_llsc', as 'op_llsc' is\na register-register operation which does not access memory (and does not\ntake a size suffix).","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98248","source_modified_at":"2026-10-19T09:16:19.730Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"959bf2fd03b59fc107584c21425f3dc73c49f762","lessThan":"d69ab4480e49bf925f4781afcc9f284affcb96b6","status":"affected","versionType":"git"},{"version":"959bf2fd03b59fc107584c21425f3dc73c49f762","lessThan":"390742871a723b52de9b92a94c0d1c85a2531e3e","status":"affected","versionType":"git"},{"version":"959bf2fd03b59fc107584c21425f3dc73c49f762","lessThan":"843ace1d0a39e9b1cfcbfb3856a7b0fbdd9cd003","status":"affected","versionType":"git"},{"version":"959bf2fd03b59fc107584c21425f3dc73c49f762","lessThan":"8cf2093f5372952a9ebc805c418d45df7112cd14","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98248","source_modified_at":"2026-10-19T09:16:19.730Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.0","status":"affected"},{"version":"0","lessThan":"5.0","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.54","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.8","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-2026-98248","source_modified_at":"2026-10-19T09:16:19.730Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"390742871a723b52de9b92a94c0d1c85a2531e3e","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98248","source_modified_at":"2026-10-19T09:16:19.730Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"843ace1d0a39e9b1cfcbfb3856a7b0fbdd9cd003","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98248","source_modified_at":"2026-10-19T09:16:19.730Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"8cf2093f5372952a9ebc805c418d45df7112cd14","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09337,"score_date":"2026-10-23"},"published_at":"2026-10-06T08:45:16.693Z","modified_at":"2026-10-19T09:16:19.730Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98248","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:16:19.730Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98248","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/d69ab4480e49bf925f4781afcc9f284affcb96b6"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/390742871a723b52de9b92a94c0d1c85a2531e3e"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/843ace1d0a39e9b1cfcbfb3856a7b0fbdd9cd003"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/8cf2093f5372952a9ebc805c418d45df7112cd14"}],"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":"2026-10-19T09:16:19.730Z","content_hash":"90e8a0062e53678c07f713d0acbfc6dfc372d06570dcd955f180cd9694bc0ca6"}}