GSD-2022-1004943 ext4: fix bug_on ext4_mb_use_inode_pa
A bug in the ext4 filesystem can cause a kernel crash, leading to denial of service for local attackers.
- 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-2022-1004943?
GSD-2022-1004943 is a denial of service vulnerability in Kernel, published on 31 Jul 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 ext4_mb_use_inode_pa
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 v4.9.320 by commit 6880fb2e64331b9fdc85d3f32b1d7e81ad8703f1, it was introduced in version v4.9.14 by commit fc6c2da174edd7a7b760b12c60d432d300e05cca. For more details please see the references link.
Which versions are affected by GSD-2022-1004943?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1004943?
No fix has been published for GSD-2022-1004943 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-2022-1004943 being exploited?
There is no known exploitation of GSD-2022-1004943 in the wild and no public exploit code.