CVE-2024-26598

high

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.

References

https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html

https://git.kernel.org/stable/c/dd3956a1b3dd11f46488c928cb890d6937d1ca80

https://git.kernel.org/stable/c/dba788e25f05209adf2b0175eb1691dc89fb1ba6

https://git.kernel.org/stable/c/d04acadb6490aa3314f9c9e087691e55de153b88

https://git.kernel.org/stable/c/ba7be666740847d967822bed15500656b26bc703

https://git.kernel.org/stable/c/ad362fe07fecf0aba839ff2cc59a3617bd42c33f

https://git.kernel.org/stable/c/65b201bf3e9af1b0254243a5881390eda56f72d1

https://git.kernel.org/stable/c/12c2759ab1343c124ed46ba48f27bd1ef5d2dff4

Details

Source: Mitre, NVD

Published: 2024-02-23

Updated: 2024-08-27

Risk Information

CVSS v2

Base Score: 6.8

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

Severity: Medium

CVSS v3

Base Score: 7.8

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

Severity: High