CVE-2024-50192: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v4: Don't allow a VMOVP on a dying VPE Kunkun Jiang reported that there is a small window of opportunity for userspace to force a change of affinity for a VPE while the VPE has already been unmapped, but the corresponding doorbell interrupt still visible in /proc/irq/. Plug the race by checking the value of vmapp_count, which tracks whether the VPE is mapped ot not, and returning an error in this case. This involves making vmapp_count common to both GICv4.1 and its v4.0 ancestor.

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CVSS v3.1 Score

4.7

MEDIUM

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.6 — 5.10.228
linux	linux_kernel	5.11 — 5.15.169
linux	linux_kernel	5.16 — 6.1.114
linux	linux_kernel	6.2 — 6.6.58
linux	linux_kernel	6.7 — 6.11.5
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/01282ab5182f85e42234df2ff42f0ce790f465ff https://git.kernel.org/stable/c/1442ee0011983f0c5c4b92380e6853afb513841a https://git.kernel.org/stable/c/64b12b061c5488e2d69e67c4eaae5da64fd30bfe https://git.kernel.org/stable/c/755b9532c885b8761fb135fedcd705e21e61cccb https://git.kernel.org/stable/c/b7d7b7fc876f836f40bf48a87e07ea18756ba196 https://git.kernel.org/stable/c/d960505a869e66184fff97fb334980a5b797c7c6

Other References

https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Frequently Asked Questions

What is CVE-2024-50192? +

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v4: Don't allow a VMOVP on a dying VPE Kunkun Jiang reported that there is a small window of opportunity for userspace to force a change of affinity for a VPE while the VPE has already been unmapped, but the corresponding doorbell interrupt still visible in /proc/irq/. Plug the race by checking the value of vmapp_count, which tracks whether the VPE is mapped ot not, and returning an error in this case. This involves making vmapp_count common to both GICv4.1 and its v4.0 ancestor. It has a CVSS v3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2024-50192? +

CVE-2024-50192 has a CVSS v3.1 score of 4.7 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-2024-50192? +

CVE-2024-50192 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-2024-50192? +

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-2024-50192