{"schema":"threatline.record/2","record":{"id":"CVE-2026-98832","aliases":[],"summary":"blk-cgroup: save IRQ state in blkg_tryget_closest()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: save IRQ state in blkg_tryget_closest()\n\nbio_set_dev() associates the bio with a blkg through bio_associate_blkg().\nIf the blkg lookup misses, blkg_tryget_closest() takes q->queue_lock with\nspin_lock_irq() and releases it with spin_unlock_irq(), which\nunconditionally enables local interrupts.\n\nCallers may call bio_set_dev() with interrupts already disabled, e.g.\ndm-thin's pool_map() does so while holding pool->lock taken with\nspin_lock_irq().  The nested spin_unlock_irq() then enables interrupts\nwhile pool->lock is still held, so an I/O completion softirq can run on\nthe same CPU, re-acquire pool->lock (thin_endio(), or overwrite_endio()\n-> complete_mapping_preparation()) and deadlock.  lockdep reports this\nas inconsistent SOFTIRQ-ON-W to IN-SOFTIRQ-W usage.\n\nCommit 3a762de55b4e (\"block: save irq state in blkg_lookup_create()\")\nfixed the same problem while the lock lived in blkg_lookup_create(), but\ncommit 9327a865e395 (\"blk-cgroup: don't nest queue_lock under rcu in\nblkg_lookup_create()\") moved the locking into blkg_tryget_closest() and\nreverted it to spin_lock_irq().\n\nSave and restore the caller's IRQ state instead.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98832","source_modified_at":"2026-10-19T09:26:24.782Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"9327a865e395a53f67dffac4710beb1d4730495e","lessThan":"9fcf4317384ce6758c3127a6e8914c54cbb9c8cc","status":"affected","versionType":"git"},{"version":"9327a865e395a53f67dffac4710beb1d4730495e","lessThan":"327c428ba79b13e4cc5253333a9d5c0aa5579bdf","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98832","source_modified_at":"2026-10-19T09:26:24.782Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"7.2","status":"affected"},{"version":"0","lessThan":"7.2","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-2026-98832","source_modified_at":"2026-10-19T09:26:24.782Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"9fcf4317384ce6758c3127a6e8914c54cbb9c8cc","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98832","source_modified_at":"2026-10-19T09:26:24.782Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"327c428ba79b13e4cc5253333a9d5c0aa5579bdf","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00155,"percentile":0.04315,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:49:36.925Z","modified_at":"2026-10-19T09:26:24.782Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98832","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:26:24.782Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98832","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/9fcf4317384ce6758c3127a6e8914c54cbb9c8cc"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/327c428ba79b13e4cc5253333a9d5c0aa5579bdf"}],"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":"2026-10-19T09:26:24.782Z","content_hash":"8cd6863cb54bbff0ec4c1894dd3759f7e077e44a22713f2d077e89819ea48140"}}