CVE-2026-53146
thunderbolt: Limit XDomain response copy to actual frame size
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Description
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Limit XDomain response copy to actual frame size tb_xdomain_copy() copies req->response_size bytes from the received packet buffer regardless of the actual frame size. When a short response arrives, this reads past the valid frame data in the DMA pool buffer into stale contents from previous transactions. Use the minimum of frame size and expected response size for the copy length.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/c55da494dfb445fb28df3a9d293c2be6a299cd01
- https://git.kernel.org/stable/c/7720654b4842bcdfeb64bc002f6186041849e1e7
- https://git.kernel.org/stable/c/033dfa63bf6be2653441a1dccae4a8313a91bb9d
- https://git.kernel.org/stable/c/fc261397295b8ad0654cec747b0ec25ea0011995
- https://git.kernel.org/stable/c/a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cb
References (9)
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