GSD-2022-1004020 NFC: NULL out the dev->rfkill to prevent UAF
A use-after-free vulnerability in the Linux Kernel NFC subsystem allows local attackers to potentially execute code or escalate privileges.
- 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-2022-1004020?
GSD-2022-1004020 is an use after free vulnerability in Kernel, published on 28 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NFC: NULL out the dev->rfkill to prevent UAF
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 v4.14.283 by commit f81270125b50532624400063281e6611ecd61ddf, it was introduced in version v4.14.256 by commit 47244ac0b65bd74cc70007d8e1bac68bd2baad19. For more details please see the references link.
Which versions are affected by GSD-2022-1004020?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1004020?
No fix has been published for GSD-2022-1004020 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2022-1004020 being exploited?
There is no known exploitation of GSD-2022-1004020 in the wild and no public exploit code.