GSD-2021-1001090 net: bridge: fix vlan tunnel dst refcnt when egressing
A reference counting error in the Linux kernel bridge VLAN tunnel egress path can lead to memory corruption and potential 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-2021-1001090?
GSD-2021-1001090 is a memory corruption vulnerability in Kernel, published on 30 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
net: bridge: fix vlan tunnel dst refcnt when egressing
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 v5.12.13 by commit 25053a8404ba17ca48f5553d487afc1882e9f56c, it was introduced in version v4.11 by commit 11538d039ac6efcf4f1a6c536e1b87cd3668a9fd. For more details please see the references link.
Which versions are affected by GSD-2021-1001090?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001090?
No fix has been published for GSD-2021-1001090 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2021-1001090 being exploited?
There is no known exploitation of GSD-2021-1001090 in the wild and no public exploit code.