GSD-2022-1000990 btrfs: release correct delalloc amount in direct IO write path
A bug in the btrfs filesystem's direct IO write path can cause incorrect delalloc release, potentially leading to system instability or denial of service.
- 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-2022-1000990?
GSD-2022-1000990 is a denial of service vulnerability in Kernel, published on 24 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
btrfs: release correct delalloc amount in direct IO write path
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 v5.17.4 by commit a04d37ddfe4be431b9e52e8504490376ab0a39a4, it was introduced in version v5.17 by commit f0bfa76a11e93d0fe2c896fcb566568c5e8b5d3f. For more details please see the references link.
Which versions are affected by GSD-2022-1000990?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1000990?
No fix has been published for GSD-2022-1000990 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2022-1000990 being exploited?
There is no known exploitation of GSD-2022-1000990 in the wild and no public exploit code.