GSD-2021-1000734 nfc: fix NULL ptr dereference in llcp_sock_getname() after failed connect
A NULL pointer dereference in the Linux Kernel NFC LLCP module can cause a denial of service after a failed connection attempt.
- 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-2021-1000734?
GSD-2021-1000734 is a vulnerability in Kernel, published on 24 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 v4.14.236 by commit ffff05b9ee5c74c04bba2801c1f99b31975d74d9, it was introduced in version v3.3 by commit d646960f7986fefb460a2b062d5ccc8ccfeacc3a. For more details please see the references link.
Which versions are affected by GSD-2021-1000734?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000734?
No fix has been published for GSD-2021-1000734 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000734 being exploited?
There is no known exploitation of GSD-2021-1000734 in the wild and no public exploit code.