CVE-2023-54278

In the Linux kernel’s s390/vmem subsystem, a flaw exists in the handling of virtual memory area initialization when debug pagealloc is enabled. Under certain conditions, the kernel may access memory after it has been freed or mishandled during early boot or subsystem initialization, resulting in a use-after-free condition that can cause an early kernel crash or undefined behavior on affected s390 systems.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.