CVE-2021-33200 log

Severity Medium
Remote No
Type Privilege escalation
kernel/bpf/verifier.c in the Linux kernel before 5.12.8 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.
Group Package Affected Fixed Severity Status Ticket
AVG-2033 linux-hardened 5.12.7.hardened1-1 5.12.9.hardened1-1 Medium Fixed
AVG-2010 linux-lts 5.10.40-1 5.10.41-1 Medium Fixed
AVG-2008 linux-zen 5.12.7.zen1-1 5.12.8.zen1-1 Medium Fixed
AVG-2007 linux 5.12.7.arch1-1 5.12.8.arch1-1 Medium Fixed