GSD-2022-1001906 ext4: make mb_optimize_scan performance mount option work with extents
A flaw in the ext4 filesystem's mb_optimize_scan mount option could lead to performance degradation or denial of service when using extents.
- 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-2022-1001906?
GSD-2022-1001906 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
ext4: make mb_optimize_scan performance mount option work with extents
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 v5.15.33 by commit 3c65b7309d2e0dd8d134e7813cd95debd91ea07b, it was introduced in version v5.13 by commit 196e402adf2e4cd66f101923409f1970ec5f1af3. For more details please see the references link.
Which versions are affected by GSD-2022-1001906?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1001906?
No fix has been published for GSD-2022-1001906 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-2022-1001906 being exploited?
There is no known exploitation of GSD-2022-1001906 in the wild and no public exploit code.