GSD-2021-1001640 ext4: fix reserved space counter leakage
A local attacker can cause a denial of service by exploiting a reserved space counter leakage in the ext4 filesystem.
- 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-2021-1001640?
GSD-2021-1001640 is a denial of service vulnerability in Kernel, published on 19 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ext4: fix reserved space counter leakage
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 v5.10.71 by commit 9ccf35492b084ecbc916761a5c6f42599450f013, it was introduced in version v3.8 by commit 51865fda28e585bdcc164474ff6438a9ccdbfada. For more details please see the references link.
Which versions are affected by GSD-2021-1001640?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001640?
No fix has been published for GSD-2021-1001640 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-2021-1001640 being exploited?
There is no known exploitation of GSD-2021-1001640 in the wild and no public exploit code.