GSD-2022-1000842 cifs: fix double free race when mount fails in cifs_get_root()
A race condition in the Linux kernel CIFS module can cause a double free during mount failures, potentially leading to system crashes or privilege escalation.
- 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-2022-1000842?
GSD-2022-1000842 is an use after free vulnerability in Kernel, published on 18 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
cifs: fix double free race when mount fails in cifs_get_root()
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 v5.10.104 by commit df9db1a2af37f39ad1653c7b9b0d275d72d0bc67. For more details please see the references link.
Which versions are affected by GSD-2022-1000842?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1000842?
No fix has been published for GSD-2022-1000842 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-2022-1000842 being exploited?
There is no known exploitation of GSD-2022-1000842 in the wild and no public exploit code.