High severity8.1NVD Advisory· Published Jun 25, 2026· Updated Jul 6, 2026
CVE-2026-53147
CVE-2026-53147
Description
In the Linux kernel, the following vulnerability has been resolved:
thunderbolt: Validate XDomain request packet size before type cast
tb_xdp_handle_request() casts the received packet buffer to protocol-specific structs without verifying that the allocation is large enough for the target type. A peer can send a minimal XDomain packet that passes the generic header length check but is shorter than the struct accessed after the cast, causing out-of- bounds reads from the kmemdup allocation.
Plumb the packet length through xdomain_request_work and validate it against the expected struct size before each cast.
Affected products
22cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 8 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.15,<6.1.176
- cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc7:*:*:*:*:*:*
- (no CPE)
- osv-coords13 versionspkg:apk/chainguard/linux-aws-6.12pkg:apk/chainguard/linux-aws-6.18pkg:apk/chainguard/linux-azure-6.18pkg:apk/chainguard/linux-gcp-6.12pkg:apk/chainguard/linux-gcp-6.18pkg:apk/chainguard/linux-gcp-6.18-bootc-boot-installedpkg:apk/chainguard/linux-qemu-6.12pkg:apk/chainguard/linux-qemu-6.18pkg:apk/chainguard/linux-qemu-6.18-bootc-boot-installedpkg:apk/chainguard/linux-qemu-melangepkg:apk/chainguard/linux-vmware-6.12pkg:apk/chainguard/linux-vmware-6.18pkg:linux/kernel
< 6.12.95-r0+ 12 more
- (no CPE)range: < 6.12.95-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.12.95-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.12.95-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: < 6.12.95-r0
- (no CPE)range: < 6.18.38-r0
- (no CPE)range: >= 4.15.0, < 6.1.176
Patches
Vulnerability mechanics
References
6- git.kernel.org/stable/c/07cd2787cdf8942d24a1a3ef81aa89b526fb6381nvdPatch
- git.kernel.org/stable/c/0dd61ba03d05187726ecdf9c0e2175a81b9b24f6nvdPatch
- git.kernel.org/stable/c/46da5c3ea011e884028a91cf913db093920a915bnvdPatch
- git.kernel.org/stable/c/79235c8add5da4bf27a12f5a5dbb579f300c059envdPatch
- git.kernel.org/stable/c/a504b9f2797b739e0304d537e8aa4ce883ecce39nvdPatch
- git.kernel.org/stable/c/a770e62923090d7572f1f5a8507ae551d354a057nvdPatch
News mentions
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