GSD-2021-1000754 nfc: fix NULL ptr dereference in llcp_sock_getname() after failed connect
A NULL pointer dereference in the Linux Kernel NFC LLCP module allows local attackers to cause a denial of service.
- 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-2021-1000754?
GSD-2021-1000754 is a 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
nfc: fix NULL ptr dereference in llcp_sock_getname() after failed connect
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 v5.4.125 by commit 5d4c4b06ed9fb7a69d0b2e2a73fc73226d25ab70, it was introduced in version v3.3 by commit d646960f7986fefb460a2b062d5ccc8ccfeacc3a. For more details please see the references link.
Which versions are affected by GSD-2021-1000754?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000754?
No fix has been published for GSD-2021-1000754 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000754 being exploited?
There is no known exploitation of GSD-2021-1000754 in the wild and no public exploit code.