PT-2025-42707 · Linux · Linux Kernel

Published

2025-10-18

·

Updated

2025-10-18

·

CVE-2025-40002

None

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Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description The Linux kernel contains a use-after-free issue within the thunderbolt driver, specifically in the 
tb dp dprx work
function. The original code used 
cancel delayed work()
, which did not guarantee the completion of a delayed work item before the associated memory was deallocated, leading to a use-after-free scenario when 
tb tunnel
was dereferenced. A race condition can occur where 
tb tunnel
is deallocated while 
tunnel->dprx work
is still active. The issue was identified through static analysis. The fix involves implementing proper reference counting to ensure the 
tb tunnel
remains valid during work item execution and to prevent memory leaks. The vulnerable function is 
tb dp dprx work()
.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2025-40002

Affected Products

Linux Kernel