{"id":"CVE-2026-53150","state":"PUBLISHED","title":"thunderbolt: Reject zero-length property entries in validator","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Reject zero-length property entries in validator\n\ntb_property_entry_valid() accepts entries with length == 0 for\nDIRECTORY, DATA, and TEXT types.  A zero-length TEXT entry passes\nvalidation but causes an underflow in the null-termination logic:\n\n  property->value.text[property->length * 4 - 1] = '\\0';\n\nWhen property->length is 0 this writes to offset -1 relative to\nthe allocation.\n\nReject zero-length entries early in the validator since they have no\nvalid representation in the XDomain property protocol.","publishedAt":"2026-06-25T08:38:35.531Z","updatedAt":"2026-10-15T01:22:29.955Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"35d6c9252a152e756768a26dbf216b9dd9dd8e92","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"99d9dbad1463afb510d42c9714f846361d1b726d","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"5f56bc6bddffe8710ba0ba8844023b5a44ca90e4","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"ca11e7da4fba4b394f69e16448f4463c44c84de6","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"2e0ddac549ebd713eb9f4a15b6496e3440a17d8b","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"3b6e68cb97f725385010264a873e14a3921b6b8a","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"cff8eb65d1eafe7793e54b4d0cf6bf831644630b","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/581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a","https://git.kernel.org/stable/c/35d6c9252a152e756768a26dbf216b9dd9dd8e92","https://git.kernel.org/stable/c/99d9dbad1463afb510d42c9714f846361d1b726d","https://git.kernel.org/stable/c/5f56bc6bddffe8710ba0ba8844023b5a44ca90e4","https://git.kernel.org/stable/c/ca11e7da4fba4b394f69e16448f4463c44c84de6","https://git.kernel.org/stable/c/2e0ddac549ebd713eb9f4a15b6496e3440a17d8b","https://git.kernel.org/stable/c/3b6e68cb97f725385010264a873e14a3921b6b8a","https://git.kernel.org/stable/c/cff8eb65d1eafe7793e54b4d0cf6bf831644630b","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-2026-53150.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53150","state":"PUBLISHED","datePublished":"2026-06-25T08:38:35.531Z","dateUpdated":"2026-10-15T01:22:29.955Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.387Z"},"containers":{"cna":{"title":"thunderbolt: Reject zero-length property entries in validator","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Reject zero-length property entries in validator\n\ntb_property_entry_valid() accepts entries with length == 0 for\nDIRECTORY, DATA, and TEXT types.  A zero-length TEXT entry passes\nvalidation but causes an underflow in the null-termination logic:\n\n  property->value.text[property->length * 4 - 1] = '\\0';\n\nWhen property->length is 0 this writes to offset -1 relative to\nthe allocation.\n\nReject zero-length entries early in the validator since they have no\nvalid representation in the XDomain property protocol."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"35d6c9252a152e756768a26dbf216b9dd9dd8e92","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"99d9dbad1463afb510d42c9714f846361d1b726d","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"5f56bc6bddffe8710ba0ba8844023b5a44ca90e4","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"ca11e7da4fba4b394f69e16448f4463c44c84de6","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"2e0ddac549ebd713eb9f4a15b6496e3440a17d8b","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"3b6e68cb97f725385010264a873e14a3921b6b8a","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","status":"affected","lessThan":"cff8eb65d1eafe7793e54b4d0cf6bf831644630b","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":[{"url":"https://git.kernel.org/stable/c/581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a"},{"url":"https://git.kernel.org/stable/c/35d6c9252a152e756768a26dbf216b9dd9dd8e92"},{"url":"https://git.kernel.org/stable/c/99d9dbad1463afb510d42c9714f846361d1b726d"},{"url":"https://git.kernel.org/stable/c/5f56bc6bddffe8710ba0ba8844023b5a44ca90e4"},{"url":"https://git.kernel.org/stable/c/ca11e7da4fba4b394f69e16448f4463c44c84de6"},{"url":"https://git.kernel.org/stable/c/2e0ddac549ebd713eb9f4a15b6496e3440a17d8b"},{"url":"https://git.kernel.org/stable/c/3b6e68cb97f725385010264a873e14a3921b6b8a"},{"url":"https://git.kernel.org/stable/c/cff8eb65d1eafe7793e54b4d0cf6bf831644630b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-25T08:38:35.531Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.12.94"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.18.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - 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