CVE-2024-26691: KVM: arm64: Fix circular locking dependency
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: Fix circular locking dependency
The Linux kernel CVE team has assigned CVE-2024-26691 to this issue.
Upstream advisory: https://lore.kernel.org/linux-cve-announce/2024040336-CVE-2024-26691-fff7@gregkh/T
Other sources
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: Fix circular locking dependency
The rule inside kvm enforces that the vcpu->mutex is taken inside kvm->lock. The rule is violated by the pkvmcreatehypvm() which acquires the kvm->lock while already holding the vcpu->mutex lock from kvmvcpuioctl(). Avoid the circular locking dependency altogether by protecting the hyp vm handle with the configlock, much like we already do for other forms of VM-scoped data.
— NVD
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-26691?
CVE-2024-26691 has been classified as a medium severity vulnerability in the Linux kernel.
What is the impact of CVE-2024-26691?
CVE-2024-26691 addresses a circular locking dependency in the KVM component affecting arm64 architecture.
How do I fix CVE-2024-26691?
To fix CVE-2024-26691, update the kernel to version 6.6.18, 6.7.6, 6.8, or the specified versions if using Debian.
Which systems are affected by CVE-2024-26691?
CVE-2024-26691 affects systems running specific versions of the Linux kernel on both Red Hat and Debian distributions.
Has CVE-2024-26691 been patched?
Yes, CVE-2024-26691 has been resolved in the latest versions of the Linux kernel.