Advisories ยป MGASA-2021-0398

Updated kernel-linus packages fix security vulnerabilities

Publication date: 07 Aug 2021
Modification date: 17 Feb 2022
Type: security
Affected Mageia releases : 8
CVE: CVE-2021-34556 , CVE-2021-35477

Description

This kernel-linus update is based on upstream 5.10.56 and fixes at least
the following security issues:

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
(CVE-2021-34556).

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 a certain preempting store operation
does not necessarily occur before a store operation that has an
attacker-controlled value (CVE-2021-35477).

For other upstream fixes, see the referenced changelogs.

References

SRPMS

8/core