GSD-2021-1002387 proc/vmcore: fix clearing user buffer by properly using clear_user()
A local attacker can read kernel memory via the vmcore interface due to improper user buffer clearing, potentially exposing sensitive 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-2021-1002387?
GSD-2021-1002387 is a vulnerability in Kernel, published on 19 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
proc/vmcore: fix clearing user buffer by properly using clear_user()
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 v4.14.257 by commit 99d348b82bcb36171f24411d3f1a15706a2a937a, it was introduced in version v3.0 by commit 997c136f518c5debd63847e78e2a8694f56dcf90. For more details please see the references link.
Which versions are affected by GSD-2021-1002387?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002387?
No fix has been published for GSD-2021-1002387 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1002387 being exploited?
There is no known exploitation of GSD-2021-1002387 in the wild and no public exploit code.