CVE-2026-53146

thunderbolt: Limit XDomain response copy to actual frame size

State: Published
Severity: 7.1 High
Published: Jun 25, 2026
Updated: Oct 19, 2026
Reserved: Jun 9, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N	Linux

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
LinuxLinux	cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before c55da494dfb445fb28df3a9d293c2be6a299cd01Affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 7720654b4842bcdfeb64bc002f6186041849e1e7Affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 033dfa63bf6be2653441a1dccae4a8313a91bb9dAffected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before fc261397295b8ad0654cec747b0ec25ea0011995Affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cbAffected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before b5daa920f44cb582272fc9bfaeb67408776cbaefAffected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4Affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8ebAffected
LinuxLinux	4.15Affected before 4.15Not affected 5.10.259 through 5.10.Not affected 5.15.210 through 5.15.Not affected 6.1.176 through 6.1.Not affected 6.6.143 through 6.6.Not affected 6.12.94 through 6.12.Not affected 6.18.36 through 6.18.Not affected 7.0.13 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before c55da494dfb445fb28df3a9d293c2be6a299cd01Affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 7720654b4842bcdfeb64bc002f6186041849e1e7Affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 033dfa63bf6be2653441a1dccae4a8313a91bb9dAffected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before fc261397295b8ad0654cec747b0ec25ea0011995Affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cbAffected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before b5daa920f44cb582272fc9bfaeb67408776cbaefAffected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4Affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8ebAffected

LinuxLinux

4.15Affected
before 4.15Not affected
5.10.259 through 5.10.*Not affected
5.15.210 through 5.15.*Not affected
6.1.176 through 6.1.*Not affected
6.6.143 through 6.6.*Not affected
6.12.94 through 6.12.*Not affected
6.18.36 through 6.18.*Not affected
7.0.13 through 7.0.*Not affected
7.1 and laterNot affected

References

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