CVE WatchJul 6, 2026

CVE-2026-53147

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Validate XDomain request packet size before type cast tb_

CVSS

8.1

High

EPSS

0.3%

p19

KEV

—

Exploit Today

0-100

Published: Jun 25, 2026 · Last modified: Jul 6, 2026 · CWE-125

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-08-042026-08-31

Technical 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.

Official references

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