GSD-2021-1000048 locking/qrwlock: Fix ordering in queued_write_lock_slowpath()
A race condition in the Linux kernel's queued write lock implementation can lead to system instability or denial of service.
- 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-2021-1000048?
GSD-2021-1000048 is a 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
locking/qrwlock: Fix ordering in queued_write_lock_slowpath()
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 v4.19.189 by commit 5902f9453a313be8fe78cbd7e7ca9dba9319fc6e, it was introduced in version v4.15 by commit b519b56e378ee82caf9b079b04f5db87dedc3251. For more details please see the references link.
Which versions are affected by GSD-2021-1000048?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000048?
No fix has been published for GSD-2021-1000048 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000048 being exploited?
There is no known exploitation of GSD-2021-1000048 in the wild and no public exploit code.