VULNERABILITY INTELLIGENCE

CVE-2026-53147

CVSS score8.1 HIGH
EPSS probability0.27%
CISA KEVNot currently listed
Published2026-06-25
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Validate XDomain request packet size before type cast tb_xdp_handle_request() casts the received packet buffer to protocol-specific structs without verifying that the allocation is large enough for the target type. A peer can send a minimal XDomain packet that passes the generic header length check but is shorter than the struct accessed after the cast, causing out-of- bounds reads from the kmemdup allocation. Plumb the packet length through xdomain_request_work and validate it against the expected struct size before each cast.

Weakness classification

  • nvd@nist.gov: CWE-125
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-125

Primary references