GSD-2021-1001257 net: fddi: fix UAF in fza_probe
A use-after-free vulnerability in the Linux kernel FDDI driver 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-2021-1001257?
GSD-2021-1001257 is an use after free vulnerability in Kernel, published on 3 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
net: fddi: fix UAF in fza_probe
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 v5.10.53 by commit f33605908a9b6063525e9f68e62d739948c5fccf, it was introduced in version v4.20 by commit 61414f5ec9834df8aa4f55c90de16b71a3d6ca8d. For more details please see the references link.
Which versions are affected by GSD-2021-1001257?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001257?
No fix has been published for GSD-2021-1001257 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-2021-1001257 being exploited?
There is no known exploitation of GSD-2021-1001257 in the wild and no public exploit code.