GSD-2023-1002016 arm64/mm: fix incorrect file_map_count for invalid pmd
A flaw in the Linux kernel arm64 memory management can cause incorrect file map counts, potentially leading to 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-2023-1002016?
GSD-2023-1002016 is a denial of service vulnerability in Kernel, published on 13 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
arm64/mm: fix incorrect file_map_count for invalid pmd
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 v6.1.7 by commit 21e5eca0ac9046da9918a919bc92b7b5a78d27e7, it was introduced in version v5.19 by commit 42b2547137f5c974bb1bfd657c869fe96b96d86f. For more details please see the references link.
Which versions are affected by GSD-2023-1002016?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1002016?
No fix has been published for GSD-2023-1002016 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-2023-1002016 being exploited?
There is no known exploitation of GSD-2023-1002016 in the wild and no public exploit code.