CVE-2024-27067: linux kernel — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.6.19 — 6.6.23
linux	linux_kernel	6.7 — 6.7.11
linux	linux_kernel	6.8 — 6.8.2

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2024-27067? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-27067? +

CVE-2024-27067 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-27067? +

CVE-2024-27067 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-27067? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-27067