Advisories » MGASA-2021-0296

Updated kernel packages fix security vulnerabilities

Publication date: 28 Jun 2021
Modification date: 17 Feb 2022
Type: security
Affected Mageia releases : 7 , 8
CVE: CVE-2021-33624 , CVE-2021-34693

Description

This kernel update is based on upstream 5.10.46 and fixes at least 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=29173
• 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-5.10.46-1.mga7
• kmod-virtualbox-6.1.22-1.9.mga7
• kmod-xtables-addons-3.13-31.mga7

8/core

• kernel-5.10.46-1.mga8
• kmod-virtualbox-6.1.22-1.9.mga8
• kmod-xtables-addons-3.18-1.9.mga8