CVE-2024-50192

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

State: Published
Severity: 4.7 Medium
Published: Nov 8, 2024
Updated: May 11, 2026
Reserved: Oct 21, 2024

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.

Scores

CVSS	Score	Vector	Source
3.1	4.7 Medium	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before b7d7b7fc876f836f40bf48a87e07ea18756ba196Affected 64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before 755b9532c885b8761fb135fedcd705e21e61cccbAffected 64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before 64b12b061c5488e2d69e67c4eaae5da64fd30bfeAffected 64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before 01282ab5182f85e42234df2ff42f0ce790f465ffAffected 64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before d960505a869e66184fff97fb334980a5b797c7c6Affected 64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before 1442ee0011983f0c5c4b92380e6853afb513841aAffected
LinuxLinux	5.6Affected before 5.6Not affected 5.10.228 through 5.10.Not affected 5.15.169 through 5.15.Not affected 6.1.114 through 6.1.Not affected 6.6.58 through 6.6.Not affected 6.11.5 through 6.11.*Not affected 6.12 and laterNot affected

Product

Versions

LinuxLinux

64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before b7d7b7fc876f836f40bf48a87e07ea18756ba196Affected
64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before 755b9532c885b8761fb135fedcd705e21e61cccbAffected
64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before 64b12b061c5488e2d69e67c4eaae5da64fd30bfeAffected
64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before 01282ab5182f85e42234df2ff42f0ce790f465ffAffected
64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before d960505a869e66184fff97fb334980a5b797c7c6Affected
64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 to before 1442ee0011983f0c5c4b92380e6853afb513841aAffected

LinuxLinux

5.6Affected
before 5.6Not affected
5.10.228 through 5.10.*Not affected
5.15.169 through 5.15.*Not affected
6.1.114 through 6.1.*Not affected
6.6.58 through 6.6.*Not affected
6.11.5 through 6.11.*Not affected
6.12 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.