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Mageia 8: MGASA-2022-0213 Critical: Kernel-Linus Privilege Escalation

mageia
Calendar Grey May 28, 2022
Dist Mageia Esm H88
A recent kernel-linus patch for Mageia resolves serious vulnerabilities related to privilege escalation and security bypass issues.
This kernel-linus update is based on upstream 5.15.43 and fixes at least the following security issues: A race condition in the perf subsystem allows for a local privilege escalat...

Summary

This kernel-linus update is based on upstream 5.15.43 and fixes at least the following security issues:
A race condition in the perf subsystem allows for a local privilege escalation. NOTE: Mageia kernels by default has disabled the perf usage for unprivileged users, effectively rendering this vulnerability harmless (CVE-2022-1729).
Kernel could allow a remote attacker to bypass security restrictions, caused by a lockdown break issue. By sending a specially-crafted request using the kernel debugger, an attacker could exploit this vulnerability to perform read and write access to kernel memory (CVE-2022-21499).
For other upstream fixes, see the referenced changelogs.

References

- https://bugs.mageia.org/show_bug.cgi?id=30476

- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.42

- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.43

- https://www.cve.org/CVERecord?id=CVE-2022-1729

- https://www.cve.org/CVERecord?id=CVE-2022-21499

Resolution

SRPMS

- 8/core/kernel-linus-5.15.43-1.mga8

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 28 May 2022
URL: https://advisories.mageia.org/MGASA-2022-0213.html
Type: security
CVE: CVE-2022-1729, CVE-2022-21499

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