GSD-2021-1000333 ceph: fix inode leak on getattr error in __fh_to_dentry
A memory leak in the Ceph 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-2021-1000333?
GSD-2021-1000333 is a memory corruption vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ceph: fix inode leak on getattr error in __fh_to_dentry
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 v5.10.38 by commit bf45c9fe99aa8003d2703f1bd353f956dea47e40, it was introduced in version v5.8 by commit 878dabb64117406abd40977b87544d05bb3031fc. For more details please see the references link.
Which versions are affected by GSD-2021-1000333?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000333?
No fix has been published for GSD-2021-1000333 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-2021-1000333 being exploited?
There is no known exploitation of GSD-2021-1000333 in the wild and no public exploit code.