CVE-2024-26598
Published: February 24, 2024Last modified: February 24, 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.
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 |
Attack Vector | LOCAL |
Attack complexity | LOW |
Privileges required | LOW |
User interaction | NONE |
Scope | UNCHANGED |
Confidentiality | HIGH |
Integrity impact | HIGH |
Availability impact | HIGH |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
Product | Release | Package | Status |
---|---|---|---|
Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.81-r0) |
Stream | linux-lts | Fixed (6.6.58-r0) |
References
- https://git.kernel.org/stable/c/12c2759ab1343c124ed46ba48f27bd1ef5d2dff4
- https://git.kernel.org/stable/c/65b201bf3e9af1b0254243a5881390eda56f72d1
- https://git.kernel.org/stable/c/ad362fe07fecf0aba839ff2cc59a3617bd42c33f
- https://git.kernel.org/stable/c/ba7be666740847d967822bed15500656b26bc703
- https://git.kernel.org/stable/c/d04acadb6490aa3314f9c9e087691e55de153b88
- https://git.kernel.org/stable/c/dba788e25f05209adf2b0175eb1691dc89fb1ba6
- https://git.kernel.org/stable/c/dd3956a1b3dd11f46488c928cb890d6937d1ca80
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html