VULNERABILITY INTELLIGENCE

CVE-2021-33624

CVSS score4.7 MEDIUM

EPSS probability0.93%

CISA KEVNot currently listed

Published2021-06-23

Last modified2026-10-08

Description

In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.