CVE-2026-53148

thunderbolt: Clamp XDomain response data copy to allocation size

State: Published
Severity: 7.0 High
Published: Jun 25, 2026
Updated: Oct 15, 2026
Reserved: Jun 9, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

thunderbolt: Clamp XDomain response data copy to allocation size

tb_xdp_properties_request() derives the per-packet copy length from the response header without checking that it fits in the previously allocated data buffer. A malicious peer can set its length field larger than the declared data_length, causing memcpy to write past the kcalloc allocation.

Clamp the per-packet copy length so that the cumulative offset never exceeds data_len.

Scores

CVSS	Score	Vector	Source
3.1	7.0 High	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	redhat-SADP

Weaknesses

CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
LinuxLinux	cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 0b334279a82d79fb4723bd4f614305de1ab69caaAffected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 6021d39ccd979713b39b980286020d8f9a45efd1Affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0dAffected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 5db10c8ad8c09f72c847dfeef3d876098257f505Affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 05a43157676c243c248d1c6d9dcecbe6eba2f35dAffected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before fcbd0cdab92838854a5818be7ed8a097164ef6d5Affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 906035d5c3784570191d259cbf9a0ac1617852b5Affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 322e93448d908434ae5545660fcbe8f5a7a8e141Affected
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 0b334279a82d79fb4723bd4f614305de1ab69caaAffected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 6021d39ccd979713b39b980286020d8f9a45efd1Affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0dAffected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 5db10c8ad8c09f72c847dfeef3d876098257f505Affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 05a43157676c243c248d1c6d9dcecbe6eba2f35dAffected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before fcbd0cdab92838854a5818be7ed8a097164ef6d5Affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 906035d5c3784570191d259cbf9a0ac1617852b5Affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179 to before 322e93448d908434ae5545660fcbe8f5a7a8e141Affected

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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