GSD-2023-1000986 9p: set req refcount to zero to avoid uninitialized usage
An uninitialized usage vulnerability in the Linux Kernel 9p filesystem could allow attackers to cause denial of service or execute arbitrary code.
- 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-2023-1000986?
GSD-2023-1000986 is an use after free vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
9p: set req refcount to zero to avoid uninitialized usage
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 v5.15.86 by commit 1cabce56626a61f4f02452cba61ad4332a4b73f8, it was introduced in version v4.20 by commit 728356dedeff8ef999cb436c71333ef4ac51a81c. For more details please see the references link.
Which versions are affected by GSD-2023-1000986?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000986?
No fix has been published for GSD-2023-1000986 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-2023-1000986 being exploited?
There is no known exploitation of GSD-2023-1000986 in the wild and no public exploit code.