GSD-2022-1005026 s390: fix double free of GS and RI CBs on fork() failure
A double free vulnerability in the Linux kernel s390 architecture allows local attackers to cause a denial of service or potentially escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1005026?
GSD-2022-1005026 is an use after free vulnerability in Kernel, published on 16 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
s390: fix double free of GS and RI CBs on fork() failure
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 v5.19.6 by commit fbdc482d43eda40a70de4b0155843d5472f6de62, it was introduced in version v4.15 by commit 8d9047f8b967ce6181fd824ae922978e1b055cc0. For more details please see the references link.
Which versions are affected by GSD-2022-1005026?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1005026?
No fix has been published for GSD-2022-1005026 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2022-1005026 being exploited?
There is no known exploitation of GSD-2022-1005026 in the wild and no public exploit code.