GSD-2021-1000197 f2fs: compress: fix race condition of overwrite vs truncate
A race condition in the f2fs compressed filesystem allows local attackers to cause a denial of service via concurrent overwrite and truncate operations.
- 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-2021-1000197?
GSD-2021-1000197 is a vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
f2fs: compress: fix race condition of overwrite vs truncate
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 v5.12.5 by commit 936158b15e2648253afb824d252c910c496d34b5, it was introduced in version v5.6 by commit 4c8ff7095bef64fc47e996a938f7d57f9e077da3. For more details please see the references link.
Which versions are affected by GSD-2021-1000197?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000197?
No fix has been published for GSD-2021-1000197 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000197 being exploited?
There is no known exploitation of GSD-2021-1000197 in the wild and no public exploit code.