GSD-2021-1002684 xen/blkfront: harden blkfront against event channel storms
A vulnerability in the Linux kernel's Xen block frontend driver allows local attackers to cause a denial of service via event channel storms.
- 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-2021-1002684?
GSD-2021-1002684 is a denial of service vulnerability in Kernel, published on 27 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
xen/blkfront: harden blkfront against event channel storms
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 v5.4.168 by commit 4ed9f5c511ce95cb8db05ff82026ea901f45fd76. For more details please see the references link.
Which versions are affected by GSD-2021-1002684?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002684?
No fix has been published for GSD-2021-1002684 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2021-1002684 being exploited?
There is no known exploitation of GSD-2021-1002684 in the wild and no public exploit code.