CVE-2020-27171

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.11.8

Description: An issue in the Linux kernel affects the kernel/bpf/verifier.c file, causing an off-by-one error with a resultant integer underflow. This error leads to out-of-bounds speculation on pointer arithmetic, allowing side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory.

Recommendations: For Linux kernel versions prior to 5.11.8, update to version 5.11.8 or later to resolve the issue. As a temporary workaround, consider restricting access to the kernel/bpf/verifier.c file to minimize the risk of exploitation.