🛡️ MGASA-2021-0539 — kernel-linus

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on upstream 5.15.6 and fixes at least the

following security issues:

A vulnerability was found in Linux kernel, where a use-after-frees in

nouveau's postclose() handler could happen if removing device (that is

not common to remove video card physically without power-off, but same

happens if "unbind" the driver) (CVE-2020-27820).

A race condition when the eBPF map is frozen (CVE-2021-4001).

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found

in the way the user maps some regions of memory twice using shmget() which

are aligned to PUD alignment with the fault of some of the memory pages.

A local user could use this flaw to get unauthorized access to some data

(CVE-2021-4002).

For other upstream fixes, see the referenced changelogs.

Affected software

MGASA-2021-0539 is recorded against 1 package.

  • kernel-linus (fixed in 5.15.6-1.mga8)

Timeline and source

Published on 5 December 2021 and last revised on 16 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

advisories.mageia.org (Advisory)
bugs.mageia.org (Report)
cdn.kernel.org (Web)
cdn.kernel.org (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2021-12-05
Updated 2026-08-12
Modified 2026-04-16
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel-linus — 5.15.6-1.mga8

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