GSD-2021-1000138 ext4: fix check to prevent false positive report of incorrect used inodes
A flaw in the ext4 filesystem allows local attackers to trigger a false positive error report, potentially causing a denial of service.
- 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-2021-1000138?
GSD-2021-1000138 is a denial of service 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
ext4: fix check to prevent false positive report of incorrect used inodes
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 v5.10.36 by commit 098b257563b959f4ca6c1d82fde0ee727792cb19, it was introduced in version v4.18 by commit 5012284700775a4e6e3fbe7eac4c543c4874b559. For more details please see the references link.
Which versions are affected by GSD-2021-1000138?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000138?
No fix has been published for GSD-2021-1000138 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-2021-1000138 being exploited?
There is no known exploitation of GSD-2021-1000138 in the wild and no public exploit code.