GSD-2023-1000482 dm thin: Fix UAF in run_timer_softirq()
A use-after-free vulnerability in the Linux kernel's dm thin module allows local attackers to potentially execute code or cause a system crash.
- 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-2023-1000482?
GSD-2023-1000482 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 thin: Fix UAF in run_timer_softirq()
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 v6.0.18 by commit 94e231c9d6f2648d2f1f68e7f476e050ee0a6159, it was introduced in version v3.2 by commit 991d9fa02da0dd1f843dc011376965e0c8c6c9b5. For more details please see the references link.
Which versions are affected by GSD-2023-1000482?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000482?
No fix has been published for GSD-2023-1000482 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-2023-1000482 being exploited?
There is no known exploitation of GSD-2023-1000482 in the wild and no public exploit code.