GSD-2021-1002187 s390/pci: fix zpci_zdev_put() on reserve
A bug in the s390 PCI subsystem can cause a denial of service during device reserve operations, requiring kernel upgrade.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1002187?
GSD-2021-1002187 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
s390/pci: fix zpci_zdev_put() on reserve
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 a46044a92add6a400f4dada7b943b30221f7cc80, it was introduced in version v5.14 by commit 2a671f77ee49f3e78997b77fdee139467ff6a598. For more details please see the references link.
Which versions are affected by GSD-2021-1002187?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002187?
No fix has been published for GSD-2021-1002187 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-2021-1002187 being exploited?
There is no known exploitation of GSD-2021-1002187 in the wild and no public exploit code.