GSD-2022-1002021 ax25: fix UAF bug in ax25_send_control()
A use-after-free bug in the Linux kernel AX.25 protocol implementation could allow attackers to execute code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Local or same network only
- Victim action needed
- Not stated
- Fix
- None listed
What is GSD-2022-1002021?
GSD-2022-1002021 is an use after free vulnerability in Kernel, published on 24 Apr 2022. It can only be exploited from the same machine or local network.
Official description
ax25: fix UAF bug in ax25_send_control()
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 v5.10.112 by commit a4942c6fea879972a7fee50f7e92e2e10f3fc23e, it was introduced in version v5.10.112 by commit b20a5ab0f5fb175750c6bafd4cf12daccf00c738. For more details please see the references link.
Which versions are affected by GSD-2022-1002021?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1002021?
No fix has been published for GSD-2022-1002021 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-2022-1002021 being exploited?
There is no known exploitation of GSD-2022-1002021 in the wild and no public exploit code.