{"id":"CVE-2026-90420","revision":null,"records":[{"revision":"123534ffabf54be3b5f529287c3a22a2","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90420","aliases":[],"title":"nilfs2: fix infinite loop in nilfs_clean_segments()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix infinite loop in nilfs_clean_segments()\n\nsyzbot reported a hung task in nilfs_transaction_begin(). This occurs\nbecause the cleaner ioctl falls into an infinite loop if\nnilfs_segctor_construct() repeatedly returns -EROFS (e.g. the device\nis remounted as read-only after an I/O error).\n\nCurrently in nilfs_clean_segments(), if err is non-zero, it logs the\nerror and sleeps but doesn't abort when it encounters a terminal error\nlike -EROFS. This causes the thread to loop forever.\n\nFix this by breaking out of the loop if nilfs_segctor_construct()\nreturns -EROFS. This matches the behaviour in\nnilfs_segctor_write_out(), which also handles -EROFS.","state":0,"publishedAt":"2026-09-17T16:09:44.558+00:00","modifiedAt":"2026-10-19T09:03:24.266+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/nilfs2/segment.c\"\n ],\n \"versions\": [\n {\n \"version\": \"9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453\",\n \"lessThan\": \"e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453\",\n \"lessThan\": \"217b967ad7887a3e1ebc08f46f6484e081acd4b4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453\",\n \"lessThan\": \"3bcdbdaac884a4baa59716cf9bd9470c75276e2d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453\",\n \"lessThan\": \"d7afca8e4efbf4c455b4663c29ae59fde2f1b671\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453\",\n \"lessThan\": \"c07e5ad6539e7e9350d5c65cbf8adb69d1711b15\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453\",\n \"lessThan\": \"1fc6df85b4954b6fda9c351843aaca3c06f66d8d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453\",\n \"lessThan\": \"8cea0bc78ac64cb88da49c07f80bf2cf9fb7aff8\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453\",\n \"lessThan\": \"ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/nilfs2/segment.c\"\n ],\n \"versions\": [\n {\n \"version\": \"2.6.30\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"2.6.30\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.270\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.221\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.188\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.157\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.110\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.52\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2.6\",\n \"lessThanOrEqual\": \"7.2.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.3\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3","https://git.kernel.org/stable/c/217b967ad7887a3e1ebc08f46f6484e081acd4b4","https://git.kernel.org/stable/c/3bcdbdaac884a4baa59716cf9bd9470c75276e2d","https://git.kernel.org/stable/c/d7afca8e4efbf4c455b4663c29ae59fde2f1b671","https://git.kernel.org/stable/c/c07e5ad6539e7e9350d5c65cbf8adb69d1711b15","https://git.kernel.org/stable/c/1fc6df85b4954b6fda9c351843aaca3c06f66d8d","https://git.kernel.org/stable/c/8cea0bc78ac64cb88da49c07f80bf2cf9fb7aff8","https://git.kernel.org/stable/c/ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90420","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90420","identifiers":["CVE-2026-90420"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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