CVE-2021-33624

MediumCVSS 4.7/10Last modified Oct 8, 2026

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.

Metrics

CVSS 3.1 4.7/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-843

Affected software

No affected versions have been published.

Timeline

Published: Jun 23, 2021
Last modified: Oct 8, 2026
NVD status: Modified

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