GSD-2021-1002478 net: vlan: fix underflow for the real_dev refcnt
An integer underflow in the Linux Kernel VLAN driver can lead to a reference count error, potentially causing 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-2021-1002478?
GSD-2021-1002478 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
net: vlan: fix underflow for the real_dev refcnt
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 v5.10.83 by commit 6e800ee43218a56acc93676bbb3d93b74779e555, it was introduced in version v5.10.80 by commit e04a7a84bb77f9cdf4475340fe931389bc72331c. For more details please see the references link.
Which versions are affected by GSD-2021-1002478?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002478?
No fix has been published for GSD-2021-1002478 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1002478 being exploited?
There is no known exploitation of GSD-2021-1002478 in the wild and no public exploit code.