GSD-2021-1001866 s390/pci: fix zpci_zdev_put() on reserve
A bug in the s390 PCI driver's reserve function can cause a system crash, requiring local high-privilege access to exploit.
- 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-2021-1001866?
GSD-2021-1001866 is a denial of service vulnerability in Kernel, published on 28 Oct 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 v5.14.15 by commit 4e5d794a2743f5a1e13ee1066ce37711f2696044, it was introduced in version v5.14 by commit 2a671f77ee49f3e78997b77fdee139467ff6a598. For more details please see the references link.
Which versions are affected by GSD-2021-1001866?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001866?
No fix has been published for GSD-2021-1001866 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-2021-1001866 being exploited?
There is no known exploitation of GSD-2021-1001866 in the wild and no public exploit code.