{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53147","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.387Z","datePublished":"2026-06-25T08:38:33.547Z","dateUpdated":"2026-06-28T06:39:32.188Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-28T06:39:32.188Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Validate XDomain request packet size before type cast\n\ntb_xdp_handle_request() casts the received packet buffer to\nprotocol-specific structs without verifying that the allocation\nis large enough for the target type.  A peer can send a minimal\nXDomain packet that passes the generic header length check but is\nshorter than the struct accessed after the cast, causing out-of-\nbounds reads from the kmemdup allocation.\n\nPlumb the packet length through xdomain_request_work and validate\nit against the expected struct size before each cast."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","baseScore":8.1,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thunderbolt/xdomain.c"],"versions":[{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","lessThan":"a770e62923090d7572f1f5a8507ae551d354a057","status":"affected","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","lessThan":"0dd61ba03d05187726ecdf9c0e2175a81b9b24f6","status":"affected","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","lessThan":"79235c8add5da4bf27a12f5a5dbb579f300c059e","status":"affected","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","lessThan":"46da5c3ea011e884028a91cf913db093920a915b","status":"affected","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","lessThan":"07cd2787cdf8942d24a1a3ef81aa89b526fb6381","status":"affected","versionType":"git"},{"version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","lessThan":"a504b9f2797b739e0304d537e8aa4ce883ecce39","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thunderbolt/xdomain.c"],"versions":[{"version":"4.15","status":"affected"},{"version":"0","lessThan":"4.15","status":"unaffected","versionType":"semver"},{"version":"6.1.176","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.143","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.94","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.36","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.13","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"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"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/a770e62923090d7572f1f5a8507ae551d354a057"},{"url":"https://git.kernel.org/stable/c/0dd61ba03d05187726ecdf9c0e2175a81b9b24f6"},{"url":"https://git.kernel.org/stable/c/79235c8add5da4bf27a12f5a5dbb579f300c059e"},{"url":"https://git.kernel.org/stable/c/46da5c3ea011e884028a91cf913db093920a915b"},{"url":"https://git.kernel.org/stable/c/07cd2787cdf8942d24a1a3ef81aa89b526fb6381"},{"url":"https://git.kernel.org/stable/c/a504b9f2797b739e0304d537e8aa4ce883ecce39"}],"title":"thunderbolt: Validate XDomain request packet size before type cast","x_generator":{"engine":"bippy-1.2.0"}}}}