vulnerability
Red Hat: CVE-2021-33624: kernel: Linux kernel BPF protection against speculative execution attacks can be bypassed to read arbitrary kernel memory
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:M/Au:N/C:C/I:N/A:N) | Jun 23, 2021 | Jul 9, 2025 | Jul 9, 2025 |
Severity
5
CVSS
(AV:L/AC:M/Au:N/C:C/I:N/A:N)
Published
Jun 23, 2021
Added
Jul 9, 2025
Modified
Jul 9, 2025
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.
Solution
no-fix-redhat-rpm-package
References
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