MGASA-2021-0295 - Updated kernel-linus packages fix security vulnerabilities

Publication date: 28 Jun 2021
URL: https://advisories.mageia.org/MGASA-2021-0295.html
Type: security
Affected Mageia releases: 7, 8
CVE: CVE-2021-33624,
     CVE-2021-34693

This kernel-linus update is based on upstream 5.10.46 and fixes atleast
the following security issues:

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 (CVE-2021-33624).

net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to
obtain sensitive information from kernel stack memory because parts of a
data structure are uninitialized. (CVE-2021-34693).

For other upstream fixes, see the referenced changelog.

References:
- https://bugs.mageia.org/show_bug.cgi?id=29171
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.46
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33624
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34693

SRPMS:
- 7/core/kernel-linus-5.10.46-1.mga7
- 8/core/kernel-linus-5.10.46-1.mga8