CVE-2026-53148

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.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2026-06-25

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/05a43157676c243c248d1c6d9dcecbe6eba2f35d
• https://git.kernel.org/stable/c/0b334279a82d79fb4723bd4f614305de1ab69caa
• https://git.kernel.org/stable/c/322e93448d908434ae5545660fcbe8f5a7a8e141
• https://git.kernel.org/stable/c/5db10c8ad8c09f72c847dfeef3d876098257f505
• https://git.kernel.org/stable/c/6021d39ccd979713b39b980286020d8f9a45efd1

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