{"id":"CVE-2023-53569","state":"PUBLISHED","title":"ext2: Check block size validity during mount","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next2: Check block size validity during mount\n\nCheck that log of block size stored in the superblock has sensible\nvalue. Otherwise the shift computing the block size can overflow leading\nto undefined behavior.","publishedAt":"2025-10-04T15:17:10.734Z","updatedAt":"2026-05-11T19:47:30.361Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"0ebfaf14150f55550cffb1148ed3920143c7a69c","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"451b98155be5dfee05bc6e7c8b30c0be4add3f71","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"c4813f858e5c3e4c4659ce95385c1c400c593e1e","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"22ab5fed07ad4b206ea910fd0132d1a0d4831584","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"99f8a15af6c9f0653193104a9e70891f950c6001","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"e6f4fb28890c1361e0db9eb1adee3fc04e7fe7f5","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"c2e7776843a953fd7e48895c3880c277f996193e","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"62aeb94433fcec80241754b70d0d1836d5926b0a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext2/ext2.h","fs/ext2/super.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"4.14.316","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.284","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.244","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.181","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.113","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.30","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.3.4","status":"unaffected","lessThanOrEqual":"6.3.*","versionType":"semver"},{"version":"6.4","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext2/ext2.h","fs/ext2/super.c"]}],"references":["https://git.kernel.org/stable/c/0ebfaf14150f55550cffb1148ed3920143c7a69c","https://git.kernel.org/stable/c/451b98155be5dfee05bc6e7c8b30c0be4add3f71","https://git.kernel.org/stable/c/c4813f858e5c3e4c4659ce95385c1c400c593e1e","https://git.kernel.org/stable/c/22ab5fed07ad4b206ea910fd0132d1a0d4831584","https://git.kernel.org/stable/c/99f8a15af6c9f0653193104a9e70891f950c6001","https://git.kernel.org/stable/c/e6f4fb28890c1361e0db9eb1adee3fc04e7fe7f5","https://git.kernel.org/stable/c/c2e7776843a953fd7e48895c3880c277f996193e","https://git.kernel.org/stable/c/62aeb94433fcec80241754b70d0d1836d5926b0a"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53569.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53569","state":"PUBLISHED","datePublished":"2025-10-04T15:17:10.734Z","dateUpdated":"2026-05-11T19:47:30.361Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-10-04T15:14:15.924Z"},"containers":{"cna":{"title":"ext2: Check block size validity during mount","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next2: Check block size validity during mount\n\nCheck that log of block size stored in the superblock has sensible\nvalue. Otherwise the shift computing the block size can overflow leading\nto undefined behavior."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"0ebfaf14150f55550cffb1148ed3920143c7a69c","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"451b98155be5dfee05bc6e7c8b30c0be4add3f71","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"c4813f858e5c3e4c4659ce95385c1c400c593e1e","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"22ab5fed07ad4b206ea910fd0132d1a0d4831584","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"99f8a15af6c9f0653193104a9e70891f950c6001","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"e6f4fb28890c1361e0db9eb1adee3fc04e7fe7f5","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"c2e7776843a953fd7e48895c3880c277f996193e","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"62aeb94433fcec80241754b70d0d1836d5926b0a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext2/ext2.h","fs/ext2/super.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"4.14.316","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.284","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.244","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.181","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.113","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.30","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.3.4","status":"unaffected","lessThanOrEqual":"6.3.*","versionType":"semver"},{"version":"6.4","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext2/ext2.h","fs/ext2/super.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/0ebfaf14150f55550cffb1148ed3920143c7a69c"},{"url":"https://git.kernel.org/stable/c/451b98155be5dfee05bc6e7c8b30c0be4add3f71"},{"url":"https://git.kernel.org/stable/c/c4813f858e5c3e4c4659ce95385c1c400c593e1e"},{"url":"https://git.kernel.org/stable/c/22ab5fed07ad4b206ea910fd0132d1a0d4831584"},{"url":"https://git.kernel.org/stable/c/99f8a15af6c9f0653193104a9e70891f950c6001"},{"url":"https://git.kernel.org/stable/c/e6f4fb28890c1361e0db9eb1adee3fc04e7fe7f5"},{"url":"https://git.kernel.org/stable/c/c2e7776843a953fd7e48895c3880c277f996193e"},{"url":"https://git.kernel.org/stable/c/62aeb94433fcec80241754b70d0d1836d5926b0a"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:47:30.361Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"4.14.316"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"4.19.284"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.4.244"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.10.181"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.15.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.3.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.4"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}