GSD-2021-1000814 ext4: fix memory leak in ext4_mb_init_backend on error path.
A memory leak in the ext4 filesystem allows local attackers to cause denial of service by exhausting kernel memory.
- 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-2021-1000814?
GSD-2021-1000814 is a memory corruption vulnerability in Kernel, published on 25 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ext4: fix memory leak in ext4_mb_init_backend on error path.
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 v5.12.10 by commit 04fb2baa0b147f51db065a1b13a11954abe592d0, it was introduced in version by commit . For more details please see the references link.
Which versions are affected by GSD-2021-1000814?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000814?
No fix has been published for GSD-2021-1000814 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2021-1000814 being exploited?
There is no known exploitation of GSD-2021-1000814 in the wild and no public exploit code.