GSD-2021-1002540 net/smc: Fix NULL pointer dereferencing in smc_vlan_by_tcpsk()
A NULL pointer dereference in the Linux kernel SMC module allows local attackers to cause a system crash.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1002540?
GSD-2021-1002540 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/smc: Fix NULL pointer dereferencing in smc_vlan_by_tcpsk()
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 v5.15.6 by commit bb851d0fb02547d03cd40106b5f2391c4fed6ed1, it was introduced in version v4.18 by commit cb9d43f6775457cac75544bc4197f26ac2b6f294. For more details please see the references link.
Which versions are affected by GSD-2021-1002540?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002540?
No fix has been published for GSD-2021-1002540 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1002540 being exploited?
There is no known exploitation of GSD-2021-1002540 in the wild and no public exploit code.