{"schema":"threatline.record/2","record":{"id":"CVE-2026-98279","aliases":[],"summary":"btrfs: handle lack of space when cleaning up verity items","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: handle lack of space when cleaning up verity items\n\nWhen enable_verity() hits the qgroup limit, rollback_verity() needs its\nown metadata reservation. When the qgroup limit or lack of space refuses\nthe rollback, the whole filesystem is forced read-only even though the\nqgroup limit was for one subvolume only. Also orphan cleanup at the next\nmount fails the same way, so the leftover items are never removed: with\n-EDQUOT the subvolume stays unreachable, and with -ENOSPC on a full\nfilesystem the next read-write mount fails.\n\nStart transactions with btrfs_start_transaction_fallback_global_rsv() in\nbtrfs_orphan_cleanup(), drop_verity_items() and rollback_verity(). Those\ncalls only delete items and free the space in the end, so they may use\nthe global reserve and skip the qgroup limit, which avoids -ENOSPC and\n-EDQUOT.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98279","source_modified_at":"2026-10-19T09:16:50.852Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"146054090b0859b28fc39015c7704ccc3c3a347f","lessThan":"4b7ecabd87dc40998fe7870d7975279649229a3b","status":"affected","versionType":"git"},{"version":"146054090b0859b28fc39015c7704ccc3c3a347f","lessThan":"efa5780b84f066f419a667f6b9542368b2f62074","status":"affected","versionType":"git"},{"version":"146054090b0859b28fc39015c7704ccc3c3a347f","lessThan":"76bf149cd0298544631e756670b89c399c7acbca","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98279","source_modified_at":"2026-10-19T09:16:50.852Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","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-2026-98279","source_modified_at":"2026-10-19T09:16:50.852Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"4b7ecabd87dc40998fe7870d7975279649229a3b","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98279","source_modified_at":"2026-10-19T09:16:50.852Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"76bf149cd0298544631e756670b89c399c7acbca","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00173,"percentile":0.06446,"score_date":"2026-10-23"},"published_at":"2026-10-06T08:45:39.114Z","modified_at":"2026-10-19T09:16:50.852Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98279","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:16:50.852Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98279","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/4b7ecabd87dc40998fe7870d7975279649229a3b"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/efa5780b84f066f419a667f6b9542368b2f62074"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/76bf149cd0298544631e756670b89c399c7acbca"}],"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":"2026-10-19T09:16:50.852Z","content_hash":"6b7167cb94c79224c7b9a2dee1f57172133ef358cf931441870dd2ffab2aa262"}}