AZL-6563

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AZL-6563

Summary: CVE-2021-33200 affecting package kernel for versions less than 5.10.78.1-1

Details: kernel/bpf/verifier.c in the Linux kernel through 5.12.7 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.

References: https://nvd.nist.gov/vuln/detail/CVE-2021-33200