{"id":"CVE-2026-53149","state":"PUBLISHED","title":"thunderbolt: Bound root directory content to block size","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Bound root directory content to block size\n\n__tb_property_parse_dir() does not check that content_offset +\ncontent_len fits within block_len for the root directory case.\nWhen rootdir->length equals or exceeds block_len - 2, the entry\nloop reads past the allocated property block.\n\nAdd a bounds check after computing content_offset and content_len\nto reject directories whose content extends past the block.","publishedAt":"2026-06-25T08:38:34.869Z","updatedAt":"2026-10-15T01:22:28.808Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"5c7657d38d07268124782f03519f07c22a5814fb","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"b212bc161d8a9937b42153723a4a3f2f74fab528","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"1912be23daf4afc8d24ce916021ab68ca4c679db","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"4d0b1524caadb04c10a71f3f88692c63dcb39115","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"0a32040a48db8cf35de48b85d6115df5623e4964","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"60ba6217460792356a238299edd675d91d46bab4","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"cbeb68cbaa0a6f979ef428a7f2d0268c082ba166","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"65423079c7420e3dbf9a7aa345c243a3f5752e5d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thunderbolt/property.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thunderbolt/property.c"]}],"references":["https://git.kernel.org/stable/c/5c7657d38d07268124782f03519f07c22a5814fb","https://git.kernel.org/stable/c/b212bc161d8a9937b42153723a4a3f2f74fab528","https://git.kernel.org/stable/c/1912be23daf4afc8d24ce916021ab68ca4c679db","https://git.kernel.org/stable/c/4d0b1524caadb04c10a71f3f88692c63dcb39115","https://git.kernel.org/stable/c/0a32040a48db8cf35de48b85d6115df5623e4964","https://git.kernel.org/stable/c/60ba6217460792356a238299edd675d91d46bab4","https://git.kernel.org/stable/c/cbeb68cbaa0a6f979ef428a7f2d0268c082ba166","https://git.kernel.org/stable/c/65423079c7420e3dbf9a7aa345c243a3f5752e5d","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53149.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53149","state":"PUBLISHED","datePublished":"2026-06-25T08:38:34.869Z","dateUpdated":"2026-10-15T01:22:28.808Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.387Z"},"containers":{"cna":{"title":"thunderbolt: Bound root directory content to block size","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Bound root directory content to block size\n\n__tb_property_parse_dir() does not check that content_offset +\ncontent_len fits within block_len for the root directory case.\nWhen rootdir->length equals or exceeds block_len - 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