GSD-2022-1005822 posix-cpu-timers: Cleanup CPU timers before freeing them during exec
A use-after-free vulnerability in Linux kernel CPU timers during exec allows local attackers to potentially escalate privileges or cause a denial of service.
- 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-2022-1005822?
GSD-2022-1005822 is an use after free vulnerability in Kernel, published on 17 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
posix-cpu-timers: Cleanup CPU timers before freeing them during exec
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 v5.10.137 by commit 541840859ace9c2ccebc32fa9e376c7bd3def490, it was introduced in version v5.7 by commit 55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59. For more details please see the references link.
Which versions are affected by GSD-2022-1005822?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1005822?
No fix has been published for GSD-2022-1005822 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-2022-1005822 being exploited?
There is no known exploitation of GSD-2022-1005822 in the wild and no public exploit code.