Mageia 2021-0308: glibc security update | LinuxSecurity.com

Advisories

MGASA-2021-0308 - Updated glibc packages fix security vulnerability

Publication date: 30 Jun 2021
URL: https://advisories.mageia.org/MGASA-2021-0308.html
Type: security
Affected Mageia releases: 8
CVE: CVE-2021-33574

The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and
2.33 has a use-after-free. It may use the notification thread attributes
object (passed through its struct sigevent parameter) after it has been
freed by the caller, leading to a denial of service (application crash)
or possibly unspecified other impact (CVE-2021-33574).

Other fixes in this update:
- fix triggers so ldconfig is always run on both installing and
  uninstalling libs (mga#28797)
- Fix SXID_ERASE behavior in setuid programs [BZ#27471]

References:
- https://bugs.mageia.org/show_bug.cgi?id=29142
- https://bugs.mageia.org/show_bug.cgi?id=28797
- https://sourceware.org/bugzilla/show_bug.cgi?id=27471
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33574

SRPMS:
- 8/core/glibc-2.32-16.mga8

Mageia 2021-0308: glibc security update

The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free

Summary

The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free. It may use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service (application crash) or possibly unspecified other impact (CVE-2021-33574).
Other fixes in this update: - fix triggers so ldconfig is always run on both installing and uninstalling libs (mga#28797) - Fix SXID_ERASE behavior in setuid programs [BZ#27471]

References

- https://bugs.mageia.org/show_bug.cgi?id=29142

- https://bugs.mageia.org/show_bug.cgi?id=28797

- https://sourceware.org/bugzilla/show_bug.cgi?id=27471

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33574

Resolution

MGASA-2021-0308 - Updated glibc packages fix security vulnerability

SRPMS

- 8/core/glibc-2.32-16.mga8

Severity
Publication date: 30 Jun 2021
URL: https://advisories.mageia.org/MGASA-2021-0308.html
Type: security
CVE: CVE-2021-33574

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