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Alma Linux: CVE-2021-31829: Moderate: kernel security, bug fix, and enhancement update (ALSA-2021-4356)

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Alma Linux: CVE-2021-31829: Moderate: kernel security, bug fix, and enhancement update (ALSA-2021-4356)

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
05/06/2021
Created
05/05/2022
Added
05/04/2022
Modified
05/13/2022

Description

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.

Solution(s)

  • alma-upgrade-kernel-tools-libs-devel

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