GSD-2021-1000776 ext4: fix memory leak in ext4_fill_super
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
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000776?
GSD-2021-1000776 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_fill_super
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 v5.10.43 by commit 01d349a481f0591230300a9171330136f9159bcd, it was introduced in version v2.6.25 by commit ce40733ce93de402ed629762f0e912d9af187cef. For more details please see the references link.
Which versions are affected by GSD-2021-1000776?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000776?
No fix has been published for GSD-2021-1000776 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-2021-1000776 being exploited?
There is no known exploitation of GSD-2021-1000776 in the wild and no public exploit code.