GSD-2022-1007808 ext4: fix BUG_ON() when directory entry has invalid rec_len
A local attacker can trigger a kernel crash via a malformed ext4 directory entry, causing a 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-2022-1007808?
GSD-2022-1007808 is a denial of service vulnerability in Kernel, published on 8 Dec 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ext4: fix BUG_ON() when directory entry has invalid rec_len
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 v6.0.8 by commit ce1ee2c8827fb6493e91acbd50f664cf2a972c3d. For more details please see the references link.
Which versions are affected by GSD-2022-1007808?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1007808?
No fix has been published for GSD-2022-1007808 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-2022-1007808 being exploited?
There is no known exploitation of GSD-2022-1007808 in the wild and no public exploit code.