GSD-2021-1000787 xen-netback: take a reference to the RX task thread
A use-after-free vulnerability in the xen-netback driver allows local attackers to cause a 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-2021-1000787?
GSD-2021-1000787 is an use after free vulnerability in Kernel, published on 25 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
xen-netback: take a reference to the RX task thread
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 v5.10.43 by commit 6b53db8c4c14b4e7256f058d202908b54a7b85b4, it was introduced in version v5.5 by commit 2ac061ce97f413bfbbdd768f7d2e0fda2e8170df. For more details please see the references link.
Which versions are affected by GSD-2021-1000787?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000787?
No fix has been published for GSD-2021-1000787 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2021-1000787 being exploited?
There is no known exploitation of GSD-2021-1000787 in the wild and no public exploit code.