GSD-2022-1000723 btrfs: defrag: allow defrag_one_cluster() to skip large extent which is not a target
A flaw in the Linux kernel btrfs defrag function could allow local attackers to cause a denial of service by triggering excessive processing of large extents.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1000723?
GSD-2022-1000723 is a denial of service vulnerability in Kernel, published on 18 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
btrfs: defrag: allow defrag_one_cluster() to skip large extent which is not a target
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 v5.16.12 by commit 833df0a3d38c4d5bd3cd84b8dd38855792aa6573. For more details please see the references link.
Which versions are affected by GSD-2022-1000723?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1000723?
No fix has been published for GSD-2022-1000723 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-2022-1000723 being exploited?
There is no known exploitation of GSD-2022-1000723 in the wild and no public exploit code.