GSD-2022-1008167 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
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1008167?
GSD-2022-1008167 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 v5.4.224 by commit 2fa24d0274fbf913b56ee31f15bc01168669d909. For more details please see the references link.
Which versions are affected by GSD-2022-1008167?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1008167?
No fix has been published for GSD-2022-1008167 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-2022-1008167 being exploited?
There is no known exploitation of GSD-2022-1008167 in the wild and no public exploit code.