GSD-2021-1000541 btrfs: return whole extents in fiemap
A local attacker can read uninitialized memory via btrfs fiemap ioctl, potentially exposing sensitive kernel data.
- 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-2021-1000541?
GSD-2021-1000541 is a vulnerability in Kernel, published on 4 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
btrfs: return whole extents in fiemap
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 v5.12.9 by commit afd1fca36d26f3896c99a363fc3dbe9c05411e3a, it was introduced in version by commit . For more details please see the references link.
Which versions are affected by GSD-2021-1000541?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000541?
No fix has been published for GSD-2021-1000541 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000541 being exploited?
There is no known exploitation of GSD-2021-1000541 in the wild and no public exploit code.