PT-2024-35642 · Linux+4 · Linux Kernel+4
Syzbot
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Published
2024-10-31
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Updated
2026-05-26
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CVE-2024-53195
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue arises from the improper use of
userspace irqchip in use in the Linux kernel, specifically in the KVM arm64 component. This leads to a WARN ON() in kvm timer update irq(). The sequence of events that causes this issue involves userspace creating a VM and a vCPU, initializing the vCPU with KVM ARM VCPU PMU V3, and then issuing KVM RUN without proper setup, resulting in kvm arm pmu v3 enable() failing. If userspace ignores this error and issues KVM ARM VCPU INIT again, it can lead to the WARN ON() being hit. The functionality of userspace irqchip in use can be replaced by !irqchip in kernel(), which helps avoid this mismanagement.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu