vulnerability
Red Hat: CVE-2021-34556: kernel: BPF program can obtain sensitive information from kernel memory via a speculative store bypass side-channel attack because of the possibility of uninitialized memory locations on the BPF stack
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:P/I:N/A:N) | Aug 2, 2021 | Jul 9, 2025 | Jul 9, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
Aug 2, 2021
Added
Jul 9, 2025
Modified
Jul 9, 2025
Description
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack.
Solution
no-fix-redhat-rpm-package
References
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