CVE-2026-53146
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/033dfa63bf6be2653441a1dccae4a8313a91bb9dPatch
- https://git.kernel.org/stable/c/4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8ebPatch
- https://git.kernel.org/stable/c/7720654b4842bcdfeb64bc002f6186041849e1e7Patch
- https://git.kernel.org/stable/c/a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cbPatch
- https://git.kernel.org/stable/c/b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4Patch
- https://git.kernel.org/stable/c/b5daa920f44cb582272fc9bfaeb67408776cbaefPatch
- https://git.kernel.org/stable/c/c55da494dfb445fb28df3a9d293c2be6a299cd01Patch
- https://git.kernel.org/stable/c/fc261397295b8ad0654cec747b0ec25ea0011995Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.