{"schema":"threatline.record/2","record":{"id":"CVE-2026-98119","aliases":[],"summary":"netfs: break unbuffered write when netfs_alloc_subrequest() fails","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: break unbuffered write when netfs_alloc_subrequest() fails\n\nsyzbot reported a null-ptr-deref below [1] following a fault injection in\nnetfs_alloc_subrequest(). [0]\n\nWhen netfs_alloc_subrequest() fails, subreq is NULL.\nLater, netfs_prepare_write() tries to initialize members of\nsubreq(e.g., source), the issue in [1] is triggered.\n\nLet's handle the error of netfs_prepare_write() properly.\n\n[0]\nFAULT_INJECTION: forcing a failure.\nname failslab, interval 1, probability 0, space 0, times 0\nCall Trace:\n netfs_alloc_subrequest+0x116/0x3f0\n netfs_prepare_write+0x76/0x7b0\n netfs_unbuffered_write+0x75c/0x2020\n netfs_unbuffered_write_iter_locked+0x7d6/0xa80\n netfs_unbuffered_write_iter+0x442/0x720\n v9fs_file_write_iter+0xbf/0x100\n vfs_write+0x6ac/0x1050\n\n[1]\nKASAN: null-ptr-deref in range [0x00000000000000a8-0x00000000000000af]\nRIP: 0010:netfs_prepare_write+0xbc/0x7b0 fs/netfs/write_issue.c:173\nCall Trace:\n netfs_unbuffered_write+0x75c/0x2020 fs/netfs/direct_write.c:111\n netfs_unbuffered_write_iter_locked+0x7d6/0xa80 fs/netfs/direct_write.c:290\n netfs_unbuffered_write_iter+0x442/0x720 fs/netfs/direct_write.c:382\n v9fs_file_write_iter+0xbf/0x100 fs/9p/vfs_file.c:409\n new_sync_write fs/read_write.c:595 [inline]","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98119","source_modified_at":"2026-10-19T09:14:11.462Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"288ace2f57c9d06dd2e42bd80d03747d879a4068","lessThan":"cf6f93b8b06acf57de62dacbe71a3b99c68656a7","status":"affected","versionType":"git"},{"version":"288ace2f57c9d06dd2e42bd80d03747d879a4068","lessThan":"19f246c795e940dc5f11cd5bc0cb1e81bc7b7090","status":"affected","versionType":"git"},{"version":"288ace2f57c9d06dd2e42bd80d03747d879a4068","lessThan":"8fb45a934661419c04a44d4cfea1e0df7dcf2805","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98119","source_modified_at":"2026-10-19T09:14:11.462Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.10","status":"affected"},{"version":"0","lessThan":"6.10","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-2026-98119","source_modified_at":"2026-10-19T09:14:11.462Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"19f246c795e940dc5f11cd5bc0cb1e81bc7b7090","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98119","source_modified_at":"2026-10-19T09:14:11.462Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"8fb45a934661419c04a44d4cfea1e0df7dcf2805","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00178,"percentile":0.07046,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:36:03.524Z","modified_at":"2026-10-19T09:14:11.462Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98119","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:14:11.462Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98119","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/cf6f93b8b06acf57de62dacbe71a3b99c68656a7"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/19f246c795e940dc5f11cd5bc0cb1e81bc7b7090"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/8fb45a934661419c04a44d4cfea1e0df7dcf2805"}],"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":"2026-10-19T09:14:11.462Z","content_hash":"9a230a15eb7586dec4ed01cd34efef50a36c02ef8e6ad6e25798ed19823ab1cb"}}