GSD-2023-1000817 erofs: fix missing unmap if z_erofs_get_extent_compressedlen() fails
A missing unmap operation in the EROFS filesystem can lead to memory corruption and potential denial of service in the Linux kernel.
- 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-2023-1000817?
GSD-2023-1000817 is a memory corruption vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
erofs: fix missing unmap if z_erofs_get_extent_compressedlen() fails
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 v6.0.16 by commit 091a8ca572a2e48554427feda78aa503e98c1028, it was introduced in version v5.13 by commit cec6e93beadfd145758af2c0854fcc2abb8170cb. For more details please see the references link.
Which versions are affected by GSD-2023-1000817?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000817?
No fix has been published for GSD-2023-1000817 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-2023-1000817 being exploited?
There is no known exploitation of GSD-2023-1000817 in the wild and no public exploit code.