CVE-2024-26691

medium

Description

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 pkvm_create_hyp_vm() which acquires the kvm->lock while already holding the vcpu->mutex lock from kvm_vcpu_ioctl(). Avoid the circular locking dependency altogether by protecting the hyp vm handle with the config_lock, much like we already do for other forms of VM-scoped data.

References

https://git.kernel.org/stable/c/3d16cebf01127f459dcfeb79ed77bd68b124c228

https://git.kernel.org/stable/c/3ab1c40a1e915e350d9181a4603af393141970cc

https://git.kernel.org/stable/c/10c02aad111df02088d1a81792a709f6a7eca6cc

Details

Source: Mitre, NVD

Published: 2024-04-03

Updated: 2024-04-03

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium