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.

Score

CVSS 3.1 7.8 High

Status

Modified - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-06-25

Last modified

2026-10-15

Weaknesses

CWE-787

Affected products

• Linux Kernel (Linux)
• Enterprise Linux (Redhat)
• Simatic S7-1500 Tm Mfp - Gnulinux Subsystem (Siemens)

References

• https://git.kernel.org/stable/c/0b334279a82d79fb4723bd4f614305de1ab69caa
• https://git.kernel.org/stable/c/6021d39ccd979713b39b980286020d8f9a45efd1
• https://git.kernel.org/stable/c/89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0d
• https://git.kernel.org/stable/c/5db10c8ad8c09f72c847dfeef3d876098257f505
• https://git.kernel.org/stable/c/05a43157676c243c248d1c6d9dcecbe6eba2f35d
• https://git.kernel.org/stable/c/fcbd0cdab92838854a5818be7ed8a097164ef6d5
• https://git.kernel.org/stable/c/906035d5c3784570191d259cbf9a0ac1617852b5
• https://git.kernel.org/stable/c/322e93448d908434ae5545660fcbe8f5a7a8e141
• https://access.redhat.com/security/cve/CVE-2026-53148
• https://bugzilla.redhat.com/show_bug.cgi?id=2492756
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53148.json
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html