CVE-2024-26691
KVM: arm64: Fix circular locking dependency
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KVM: arm64: Fix circular locking dependency
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.
Reserved 2024-02-19 | Published 2024-04-03 | Updated 2025-05-04 | Assigner Linuxgit.kernel.org/...c/3d16cebf01127f459dcfeb79ed77bd68b124c228
git.kernel.org/...c/3ab1c40a1e915e350d9181a4603af393141970cc
git.kernel.org/...c/10c02aad111df02088d1a81792a709f6a7eca6cc
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