{"schema":"threatline.record/2","record":{"id":"CVE-2026-98820","aliases":[],"summary":"blk-mq: set RQF_USE_SCHED when the operation is known","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: set RQF_USE_SCHED when the operation is known\n\nThe cached requests are allocated for one operation but can be handed\nout for another. A passthrough command has RQF_USE_SCHED cleared, so\nusing those flags for a subsequent read/write bio will insert it into\nthe scheduler without ->prepare_request() and frees it without\n->finish_request(). For kyber, this leaks the domain token acquired at\ndispatch and stalls the queue.\n\nDon't set RQF_USE_SCHED based on the first operation the batch happened\nto be allocated for. Instead, set it after the request is claimed by an\noperation. Introduce a helper function, blk_mq_rq_late_init() for this,\nand absorb blk_mq_rq_time_init() since the two run together.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98820","source_modified_at":"2026-10-19T09:26:13.210Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4b6a5d9cea911424e84107df8c4eb8317938d2cd","lessThan":"790730e4d95de8356a573d4b4864486bba731863","status":"affected","versionType":"git"},{"version":"4b6a5d9cea911424e84107df8c4eb8317938d2cd","lessThan":"2c47ebc27fa72078e26177cd458cdaf3006a9685","status":"affected","versionType":"git"},{"version":"4b6a5d9cea911424e84107df8c4eb8317938d2cd","lessThan":"ab6c756f28c741d704a7c3e04814bfc3adf6f818","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98820","source_modified_at":"2026-10-19T09:26:13.210Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.1","status":"affected"},{"version":"0","lessThan":"6.1","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","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-2026-98820","source_modified_at":"2026-10-19T09:26:13.210Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"790730e4d95de8356a573d4b4864486bba731863","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98820","source_modified_at":"2026-10-19T09:26:13.210Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2c47ebc27fa72078e26177cd458cdaf3006a9685","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00206,"percentile":0.10187,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:49:12.251Z","modified_at":"2026-10-19T09:26:13.210Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98820","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:26:13.210Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98820","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/790730e4d95de8356a573d4b4864486bba731863"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/2c47ebc27fa72078e26177cd458cdaf3006a9685"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/ab6c756f28c741d704a7c3e04814bfc3adf6f818"}],"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":"2026-10-19T09:26:13.210Z","content_hash":"f33f803c548035ece8e131830cbdea6ca647e664ac4f1d36eee5c895d7fe601d"}}