GSD-2023-1000850 pstore: Avoid kcore oops by vmap()ing with VM_IOREMAP
A flaw in the Linux kernel pstore module causes a kernel oops when reading kcore, leading to a denial of service.
- 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-2023-1000850?
GSD-2023-1000850 is a denial of service 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
pstore: Avoid kcore oops by vmap()ing with VM_IOREMAP
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 v6.0.16 by commit 69dbff7d2681c55a4d979fd9b75576303e69979f, it was introduced in version v3.4 by commit 404a6043385de17273624b076599669db5ad891f. For more details please see the references link.
Which versions are affected by GSD-2023-1000850?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000850?
No fix has been published for GSD-2023-1000850 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2023-1000850 being exploited?
There is no known exploitation of GSD-2023-1000850 in the wild and no public exploit code.