GSD-2021-1002781 f2fs: fix to do sanity check on last xattr entry in __f2fs_setxattr()
A missing sanity check in the f2fs filesystem allows local attackers to trigger memory corruption, potentially leading to denial of service or code execution.
- 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-2021-1002781?
GSD-2021-1002781 is a memory corruption vulnerability in Kernel, published on 30 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
f2fs: fix to do sanity check on last xattr entry in __f2fs_setxattr()
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 v4.14.260 by commit 88dedecc24763c2e0bc1e8eeb35f9f2cd785a7e5. For more details please see the references link.
Which versions are affected by GSD-2021-1002781?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002781?
No fix has been published for GSD-2021-1002781 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-2021-1002781 being exploited?
There is no known exploitation of GSD-2021-1002781 in the wild and no public exploit code.