Description

In the Linux kernel, the following vulnerability has been resolved:

xen/evtchn: avoid WARN() when unbinding an event channel

When unbinding a user event channel, the related handler might be
called a last time in case the kernel was built with
CONFIG_DEBUG_SHIRQ. This might cause a WARN() in the handler.

Avoid that by adding an "unbinding" flag to struct user_event which
will short circuit the handler.

Classification

CVE ID: CVE-2024-27067

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 17.83% (scored less or equal to compared to others)

EPSS Date: 2025-02-04 (when was this score calculated)

References

https://git.kernel.org/stable/c/99e425032c6ec13584d3cd33846e0c7307501b47
https://git.kernel.org/stable/c/35485dad6e28f9b17884764d4692b1655cb848d0
https://git.kernel.org/stable/c/9e2d4b58c1da48a32905802aaeadba7084b46895
https://git.kernel.org/stable/c/51c23bd691c0f1fb95b29731c356c6fd69925d17

Timeline