CVE-2024-26691
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.
Does this matter?
Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.18% probability · 8th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-667
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/10c02aad111df02088d1a81792a709f6a7eca6ccPatch
- https://git.kernel.org/stable/c/3ab1c40a1e915e350d9181a4603af393141970ccPatch
- https://git.kernel.org/stable/c/3d16cebf01127f459dcfeb79ed77bd68b124c228Patch
- https://git.kernel.org/stable/c/10c02aad111df02088d1a81792a709f6a7eca6ccPatch
- https://git.kernel.org/stable/c/3ab1c40a1e915e350d9181a4603af393141970ccPatch
- https://git.kernel.org/stable/c/3d16cebf01127f459dcfeb79ed77bd68b124c228Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.