{"id":"CVE-2026-93055","state":"PUBLISHED","title":"UDF symlink pathComponent header OOB read","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nUDF symlink pathComponent header OOB read\n\nudf_symlink_filler() can enter udf_pc_to_char() with a partial pathComponent header.\n\nValidate that enough input remains for a complete pathComponent header\nbefore accessing it. Reject malformed symlink data that would otherwise\nmake udf_pc_to_char() perform an out-of-bounds read.","publishedAt":"2026-09-17T16:10:43.779Z","updatedAt":"2026-10-19T09:04:50.172Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"d9f49c8b55debf1512f912077b6c759cc8b6d2e0","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"48b2a74317e15f93983c74a5a07245bc94a00d39","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"f44f5f795f1a56249821a05183347ea025855e31","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"57371e743398e0d485f0f7beede1ade41f812324","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"ee264227b656218bc1b257d8e4f83467f5f17723","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"8da8fd3df9fc14cf79ca3a3978d27ba067985111","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"b21cb958292ee1e02eb305ff9de09f2f7edd551a","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"d23eb7380d1594cda31a5dc8487dd2a5c8def8c7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/udf/symlink.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":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/udf/symlink.c"]}],"references":["https://git.kernel.org/stable/c/d9f49c8b55debf1512f912077b6c759cc8b6d2e0","https://git.kernel.org/stable/c/48b2a74317e15f93983c74a5a07245bc94a00d39","https://git.kernel.org/stable/c/f44f5f795f1a56249821a05183347ea025855e31","https://git.kernel.org/stable/c/57371e743398e0d485f0f7beede1ade41f812324","https://git.kernel.org/stable/c/ee264227b656218bc1b257d8e4f83467f5f17723","https://git.kernel.org/stable/c/8da8fd3df9fc14cf79ca3a3978d27ba067985111","https://git.kernel.org/stable/c/b21cb958292ee1e02eb305ff9de09f2f7edd551a","https://git.kernel.org/stable/c/d23eb7380d1594cda31a5dc8487dd2a5c8def8c7"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93055.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93055","state":"PUBLISHED","datePublished":"2026-09-17T16:10:43.779Z","dateUpdated":"2026-10-19T09:04:50.172Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T15:57:05.659Z"},"containers":{"cna":{"title":"UDF symlink pathComponent header OOB read","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nUDF symlink pathComponent header OOB read\n\nudf_symlink_filler() can enter udf_pc_to_char() with a partial pathComponent header.\n\nValidate that enough input remains for a complete pathComponent header\nbefore accessing it. Reject malformed symlink data that would otherwise\nmake udf_pc_to_char() perform an out-of-bounds read."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"d9f49c8b55debf1512f912077b6c759cc8b6d2e0","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"48b2a74317e15f93983c74a5a07245bc94a00d39","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"f44f5f795f1a56249821a05183347ea025855e31","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"57371e743398e0d485f0f7beede1ade41f812324","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"ee264227b656218bc1b257d8e4f83467f5f17723","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"8da8fd3df9fc14cf79ca3a3978d27ba067985111","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"b21cb958292ee1e02eb305ff9de09f2f7edd551a","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"d23eb7380d1594cda31a5dc8487dd2a5c8def8c7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/udf/symlink.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":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/udf/symlink.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d9f49c8b55debf1512f912077b6c759cc8b6d2e0"},{"url":"https://git.kernel.org/stable/c/48b2a74317e15f93983c74a5a07245bc94a00d39"},{"url":"https://git.kernel.org/stable/c/f44f5f795f1a56249821a05183347ea025855e31"},{"url":"https://git.kernel.org/stable/c/57371e743398e0d485f0f7beede1ade41f812324"},{"url":"https://git.kernel.org/stable/c/ee264227b656218bc1b257d8e4f83467f5f17723"},{"url":"https://git.kernel.org/stable/c/8da8fd3df9fc14cf79ca3a3978d27ba067985111"},{"url":"https://git.kernel.org/stable/c/b21cb958292ee1e02eb305ff9de09f2f7edd551a"},{"url":"https://git.kernel.org/stable/c/d23eb7380d1594cda31a5dc8487dd2a5c8def8c7"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:04:50.172Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}