CVE-2026-89920: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory corruption by not reinjecting CK machine checks Channel-subsystem damage machine checks are for the host channel subsystem. The guest channel subsystem is emulated in the userspace VMM. There is no point in...

Linux Kernel Security Vulnerabilities

The Linux kernel version 4.13 contains a security vulnerability. This vulnerability arises from the lack of masking of the CK bit in the s390backupmcckinfo function. As a result, the machine check for the host channel subsystem is re-injected into the client side, potentially leading to memory...