PT-2024-21468 · Linux+5 · Linux Kernel+5
Sebastian Ene
·
Published
2024-01-30
·
Updated
2026-05-26
·
CVE-2024-26691
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 is related to a circular locking dependency in the KVM (Kernel-based Virtual Machine) component of the Linux kernel, specifically on arm64 architectures. The problem arises because the
pkvm create hyp vm() function acquires the kvm->lock while already holding the vcpu->mutex lock from kvm vcpu ioctl(), violating the rule that vcpu->mutex should be taken inside kvm->lock. To resolve this, the hyp vm handle is protected with the config lock, similar to how other forms of VM-scoped data are handled.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Improper Locking
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Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Red Hat
Suse
Ubuntu