GSD-2023-1000926 dm cache: Fix UAF in destroy()
A use-after-free vulnerability in the Linux kernel dm cache module allows local attackers to potentially execute code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2023-1000926?
GSD-2023-1000926 is an use after free vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
dm cache: Fix UAF in destroy()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.87 by commit d2a0b298ebf83ab6236f66788a3541e91ce75a70, it was introduced in version v3.9 by commit c6b4fcbad044e6fffcc75bba160e720eb8d67d17. For more details please see the references link.
Which versions are affected by GSD-2023-1000926?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000926?
No fix has been published for GSD-2023-1000926 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2023-1000926 being exploited?
There is no known exploitation of GSD-2023-1000926 in the wild and no public exploit code.