CVE-2026-31647

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

Description An issue exists in the idpf driver regarding PREEMPT RT raw/bh spinlock nesting during asynchronous VC handling. The problem occurs because the async handler takes a BH spinlock while holding a completion raw spinlock, leading to an invalid wait context. This is addressed by switching from the completion raw spinlock to a local lock within the idpf vc xn struct, as the complete() and complete all() functions are called outside the lock.

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