CVE-2023-54092: KVM: s390: pv: fix index value of replaced ASCE
In the Linux kernel, the following vulnerability has been resolved:
KVM: s390: pv: fix index value of replaced ASCE
The index field of the struct page corresponding to a guest ASCE should be 0. When replacing the ASCE in s390replaceasce(), the index of the new ASCE should also be set to 0.
Having the wrong index might lead to the wrong addresses being passed around when notifying pte invalidations, and eventually to validity intercepts (VM crash) if the prefix gets unmapped and the notifier gets called with the wrong address.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2023-54092?
CVE-2023-54092 is classified as a high-severity vulnerability affecting the Linux kernel.
How do I fix CVE-2023-54092?
To mitigate CVE-2023-54092, update to the latest version of the Linux kernel where the vulnerability has been resolved.
What systems are affected by CVE-2023-54092?
CVE-2023-54092 affects systems running the Linux kernel, particularly those utilizing KVM on s390 architecture.
What are the potential impacts of CVE-2023-54092?
The potential impacts of CVE-2023-54092 include security risks related to guest memory management on s390 systems.
Is there a workaround for CVE-2023-54092?
Currently, no specific workaround is recommended for CVE-2023-54092, so applying updates is the best solution.