CVE-2026-23177

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel related to shared memory (shmem) handling during file truncation. Specifically, an infinite loop can occur when truncating a large swap entry due to a race condition. This happens when the index points to the middle of a large swap entry, and the entry doesn't cross the end border. The shmem free swap() function fails and returns 0, leading to a retry with the same index, resulting in an infinite loop. The issue arises from an incorrect check within the shmem free swap() function and a missing condition in the retry logic.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.