CVE-2026-74370

A flaw was found in the Linux kernel's liveupdate module. This vulnerability involves a Time-of-check to Time-of-use TOCTOU race condition within the luosessionretrieve function. A concurrent thread could release and free a session after it has been looked up but before a necessary mutex lock is...

CVE-2026-74370: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: liveupdate: fix TOCTOU race in luosessionretrieve Extend the scope of the rwsemread lock in luosessionretrieve to overlap with the acquisition of the session mutex. This prevents a concurrent thread from releasing and freeing the...