VYPR
Unrated severityNVD Advisory· Published Nov 8, 2024· Updated Nov 3, 2025

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

CVE-2024-50192

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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Affected products

168

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