GSD-2022-1000311 ax25: improve the incomplete fix to avoid UAF and NPD bugs
A use-after-free and null pointer dereference in the Linux kernel AX.25 protocol allows local attackers to cause denial of service or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1000311?
GSD-2022-1000311 is an use after free vulnerability in Kernel, published on 27 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ax25: improve the incomplete fix to avoid UAF and NPD bugs
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 v4.14.268 by commit a509dbde35fa51d140512cbcf50068a84fdb7aad. For more details please see the references link.
Which versions are affected by GSD-2022-1000311?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1000311?
No fix has been published for GSD-2022-1000311 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-2022-1000311 being exploited?
There is no known exploitation of GSD-2022-1000311 in the wild and no public exploit code.