CVE-2024-27067

low-risk
Published 2024-05-01

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.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (8)

Patch https://git.kernel.org/stable/c/35485dad6e28f9b17884764d4692b1655cb848d0
Patch https://git.kernel.org/stable/c/51c23bd691c0f1fb95b29731c356c6fd69925d17
Patch https://git.kernel.org/stable/c/99e425032c6ec13584d3cd33846e0c7307501b47
Patch https://git.kernel.org/stable/c/9e2d4b58c1da48a32905802aaeadba7084b46895
Patch https://git.kernel.org/stable/c/35485dad6e28f9b17884764d4692b1655cb848d0
Patch https://git.kernel.org/stable/c/51c23bd691c0f1fb95b29731c356c6fd69925d17
Patch https://git.kernel.org/stable/c/99e425032c6ec13584d3cd33846e0c7307501b47
Patch https://git.kernel.org/stable/c/9e2d4b58c1da48a32905802aaeadba7084b46895
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal