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Red Hat: CVE-2024-26598: kernel: kvm: Avoid potential UAF in LPI translation cache (Multiple Advisories)

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Red Hat: CVE-2024-26598: kernel: kvm: Avoid potential UAF in LPI translation cache (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
02/23/2024
Created
06/14/2024
Added
06/13/2024
Modified
06/13/2024

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache There is a potential UAF scenario in the case of an LPI translation cache hit racing with an operation that invalidates the cache, such as a DISCARD ITS command. The root of the problem is that vgic_its_check_cache() does not elevate the refcount on the vgic_irq before dropping the lock that serializes refcount changes. Have vgic_its_check_cache() raise the refcount on the returned vgic_irq and add the corresponding decrement after queueing the interrupt.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

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