{"id":"CVE-2026-74349","revision":null,"records":[{"revision":"28f9910cc3e342e6b5dcfae28766a67d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74349","aliases":[],"title":"ocfs2: reject FITRIM ranges shorter than a cluster","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: reject FITRIM ranges shorter than a cluster\n\nocfs2_trim_mainbm() trims the global bitmap in cluster units, but its\ntoo-short range validation only checks sb->s_blocksize.\n\nOn filesystems with a cluster size larger than the block size, a FITRIM\nrange that is at least one block but shorter than one cluster is accepted\nand shifted down to len == 0. The later start + len - 1 and len -= ... \narithmetic then underflows and can drive trimming past the requested\nrange.\n\nReject ranges shorter than s_clustersize instead. That preserves the\nexisting -EINVAL behavior for requests that cannot discard even one\nallocation unit and keeps zero-cluster trims out of the group walk.","state":0,"publishedAt":"2026-08-15T05:58:36.63+00:00","modifiedAt":"2026-10-16T18:55:34.72+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/ocfs2/alloc.c\"\n ],\n \"versions\": [\n {\n \"version\": \"aa89762c54800208d5afdcd8e6bf124818f17fe0\",\n \"lessThan\": \"d903d59c0315f59bdf0214b4f13d71c9feb2c45c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"aa89762c54800208d5afdcd8e6bf124818f17fe0\",\n \"lessThan\": \"441abb77222f155e8d931dbabb465466db01cfd7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"aa89762c54800208d5afdcd8e6bf124818f17fe0\",\n \"lessThan\": \"e652d0f5108e447b22da4249bcd23dd1b63c73dd\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"aa89762c54800208d5afdcd8e6bf124818f17fe0\",\n \"lessThan\": \"346314bb0cc2fc52b50b73d6ecc62e0217455c2e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"aa89762c54800208d5afdcd8e6bf124818f17fe0\",\n \"lessThan\": \"06c0a0431b9856506fcd9b2c1b0c6136567d756d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"aa89762c54800208d5afdcd8e6bf124818f17fe0\",\n \"lessThan\": \"3fa7139b5f42731a61f78c42433adae13f9adc21\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"aa89762c54800208d5afdcd8e6bf124818f17fe0\",\n \"lessThan\": \"2c13e02592b918be7725ab5965e01ef4e46c4b57\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"aa89762c54800208d5afdcd8e6bf124818f17fe0\",\n \"lessThan\": \"ca1afd88f5eaaff9168e1466e5401385edf59543\",\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/ocfs2/alloc.c\"\n ],\n \"versions\": [\n {\n \"version\": \"3.14\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"3.14\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.261\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.212\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.178\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.145\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.97\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.40\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.5\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/d903d59c0315f59bdf0214b4f13d71c9feb2c45c","https://git.kernel.org/stable/c/441abb77222f155e8d931dbabb465466db01cfd7","https://git.kernel.org/stable/c/e652d0f5108e447b22da4249bcd23dd1b63c73dd","https://git.kernel.org/stable/c/346314bb0cc2fc52b50b73d6ecc62e0217455c2e","https://git.kernel.org/stable/c/06c0a0431b9856506fcd9b2c1b0c6136567d756d","https://git.kernel.org/stable/c/3fa7139b5f42731a61f78c42433adae13f9adc21","https://git.kernel.org/stable/c/2c13e02592b918be7725ab5965e01ef4e46c4b57","https://git.kernel.org/stable/c/ca1afd88f5eaaff9168e1466e5401385edf59543"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74349","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74349","identifiers":["CVE-2026-74349"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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