CVE-2021-47567

A vulnerability was found in the Linux kernel in the powerpc/32 kernel code for handling vmap stack overflows, where a hard lockup is possible because the emergency_ctx structure is referenced using its virtual address, although the data MMU is not active anymore at that time. The vulnerability could lead to system instability and memory corruption.

Red Hat Enterprise Linux is not impacted by this CVE, as the vulnerability in question does not affect the specific versions or configurations of the Linux kernel used in its distributions. This ensures that users of Red Hat Enterprise Linux are not exposed to the potential risks associated with this issue, and no further action or mitigation is necessary for systems running this operating system.

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.