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.
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/12c2759ab1343c124ed46ba48f27bd1ef5d2dff4 Patch
- git.kernel.org/stable/c/65b201bf3e9af1b0254243a5881390eda56f72d1 Patch
- git.kernel.org/stable/c/ad362fe07fecf0aba839ff2cc59a3617bd42c33f Patch
- git.kernel.org/stable/c/ba7be666740847d967822bed15500656b26bc703 Patch
- git.kernel.org/stable/c/d04acadb6490aa3314f9c9e087691e55de153b88 Patch
- git.kernel.org/stable/c/dba788e25f05209adf2b0175eb1691dc89fb1ba6 Patch
- git.kernel.org/stable/c/dd3956a1b3dd11f46488c928cb890d6937d1ca80 Patch
- git.kernel.org/stable/c/12c2759ab1343c124ed46ba48f27bd1ef5d2dff4 Patch
- git.kernel.org/stable/c/65b201bf3e9af1b0254243a5881390eda56f72d1 Patch
- git.kernel.org/stable/c/ad362fe07fecf0aba839ff2cc59a3617bd42c33f Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 15 · as of 5 November 2026
- CWE
- CWE-416
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