DEBIAN-CVE-2021-33574

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Source
https://security-tracker.debian.org/tracker/CVE-2021-33574
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-33574.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-33574
Upstream
Published
2021-05-25T22:15:10Z
Modified
2025-09-25T23:27:02.221472Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:11 / glibc

Package

Name
glibc
Purl
pkg:deb/debian/glibc?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.31-13+deb11u3

Affected versions

2.*

2.31-13
2.31-13+deb11u1
2.31-13+deb11u2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / glibc

Package

Name
glibc
Purl
pkg:deb/debian/glibc?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.32-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / glibc

Package

Name
glibc
Purl
pkg:deb/debian/glibc?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.32-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / glibc

Package

Name
glibc
Purl
pkg:deb/debian/glibc?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.32-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}