GSD-2021-1002195 mm: khugepaged: skip huge page collapse for special files
A flaw in the Linux kernel's khugepaged component could allow local attackers to cause a denial of service by triggering huge page collapse on special files.
- 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-2021-1002195?
GSD-2021-1002195 is a denial of service vulnerability in Kernel, published on 14 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
mm: khugepaged: skip huge page collapse for special files
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 by commit a4aeaa06d45e90f9b279f0b09de84bd00006e733, it was introduced in version v5.4 by commit 99cb0dbd47a15d395bf3faa78dc122bc5efe3fc0. For more details please see the references link.
Which versions are affected by GSD-2021-1002195?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002195?
No fix has been published for GSD-2021-1002195 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-2021-1002195 being exploited?
There is no known exploitation of GSD-2021-1002195 in the wild and no public exploit code.