{"schema":"threatline.record/2","record":{"id":"CVE-2026-98056","aliases":[],"summary":"nvme: remove stale namespaces by NSID range during scan","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: remove stale namespaces by NSID range during scan\n\nnvme_scan_ns_list() drops the stale namespaces in each gap in the\nreported NSID list one NSID at a time. Every iteration calls\nnvme_find_get_ns() to look the namespace up and removes it if it is\npresent. The loop runs once per NSID in the gap rather than once per\nnamespace actually present.\n\nNSIDs are 32-bit, so a target with a sparse NSID space can make a\nsingle gap spin the loop billions of times with nothing to remove.\n\n  watchdog: BUG: soft lockup - CPU#4 stuck for 26s!\n  Workqueue: nvme-wq nvme_scan_work [nvme_core]\n  RIP: 0010:__srcu_read_unlock+0xb/0x20\n  Call Trace:\n   nvme_find_get_ns+0x7d/0xb0 [nvme_core]\n   nvme_scan_ns_list+0xe8/0x280 [nvme_core]\n   nvme_scan_work+0x18a/0x280 [nvme_core]\n   process_one_work+0x197/0x380\n   worker_thread+0x2fe/0x410\n   kthread+0xe0/0x100\n\nRename nvme_remove_invalid_namespaces() to nvme_remove_nsid_range()\nand give it an open (start, end) NSID range. ctrl->namespaces is\nsorted by NSID, so the whole gap is dropped in a single walk that\nstops once end is reached. This bounds the work by the namespaces\nthat are present instead of by the size of the gap.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98056","source_modified_at":"2026-10-21T12:54:18.340Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"540c801c65eb58e05e0ca38b6fd644a83d7e2b33","lessThan":"e6a94b2c4c80a38002346ce915a9b9a3d478a3e6","status":"affected","versionType":"git"},{"version":"540c801c65eb58e05e0ca38b6fd644a83d7e2b33","lessThan":"c84ad7407fb16b92d9b7a649cc304a9cf3757897","status":"affected","versionType":"git"},{"version":"540c801c65eb58e05e0ca38b6fd644a83d7e2b33","lessThan":"f56b2bb4b18b017b056c4c17c66b2c4c54bf6ee4","status":"affected","versionType":"git"},{"version":"540c801c65eb58e05e0ca38b6fd644a83d7e2b33","lessThan":"52200fc41a79da430ccf7c126ed837535b087ea2","status":"affected","versionType":"git"},{"version":"540c801c65eb58e05e0ca38b6fd644a83d7e2b33","lessThan":"4ed7f3d7d435bf5b63da2814dc9270f5ba896011","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98056","source_modified_at":"2026-10-21T12:54:18.340Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.5","status":"affected"},{"version":"0","lessThan":"4.5","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","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-2026-98056","source_modified_at":"2026-10-21T12:54:18.340Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"52200fc41a79da430ccf7c126ed837535b087ea2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98056","source_modified_at":"2026-10-21T12:54:18.340Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"4ed7f3d7d435bf5b63da2814dc9270f5ba896011","basis":"first unaffected version stated in the CVE record"}],"cvss":7.5,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00603,"percentile":0.48202,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:24:02.919Z","modified_at":"2026-10-21T12:54:18.340Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98056","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:54:18.340Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98056","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/e6a94b2c4c80a38002346ce915a9b9a3d478a3e6"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/c84ad7407fb16b92d9b7a649cc304a9cf3757897"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f56b2bb4b18b017b056c4c17c66b2c4c54bf6ee4"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/52200fc41a79da430ccf7c126ed837535b087ea2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/4ed7f3d7d435bf5b63da2814dc9270f5ba896011"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:54:18.340Z","content_hash":"6ad3dee9b422f6c1a9d061d5fb8c1156fd98e840cbd986ad36872a0fd94bcc51"}}