CVE-2025-23138

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

Description A vulnerability in the Linux kernel has been resolved, related to a pipe accounting mismatch in the watch queue functionality. The issue arises because watch queue set size() modifies the pipe buffers charged to user->pipe bufs without updating the pipe->nr accounted on the pipe itself. This can lead to an underflow when the pipe is freed, causing subsequent too many pipe buffers soft() tests to fail with -EPERM. The fix involves explicitly accounting for the pipe usage in watch queue set size() to match the number set via account pipe buffers().

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