CVE-2024-50192

irqchip/gic-v4: Don't allow a VMOVP on a dying VPE

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.

4.7

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.03%

Affected: Linux Linux

References

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

Frequently Asked Questions

What is the severity of CVE-2024-50192?: CVE-2024-50192 has been scored as a medium severity vulnerability.
How to fix CVE-2024-50192?: To fix CVE-2024-50192, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-50192 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-50192 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-50192?: CVE-2024-50192 affects Linux Linux, Linux Linux.

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