Home/CVE/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 noti
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 noti

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.

CRITICAL · CVSS 9.8 EPSS 0.0013
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

13
gnu glibcall versions
fedoraproject fedoraall versions
netapp cloud backupall versions
netapp e-series santricity os controller>= 11.0 and <= 11.70.1
netapp solidfire baseboard management controller firmwareall versions
netapp h300s firmwareall versions
netapp h500s firmwareall versions
netapp h700s firmwareall versions
⚠

Public Exploits & PoCs

1
pocsourceware.org · show_bug.cgi?id=27896sourceware.org
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD25 May 2021 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

15
suse-csafopenSUSE-SU-2024:10792-1
siemens-csafSSA-398330
siemens-csafSSA-831302
suse-csafopenSUSE-SU-2021:3291-1
suse-csafSUSE-SU-2021:3291-1
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJYYIMDDYOHTP2PORLABTOHYQYYREZDD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RBUUWUGXVILQXVWEOU7N42ICHPJNAEUP/
https://security.gentoo.org/glsa/202107-07Third Party Advisory
https://security.netapp.com/advisory/ntap-20210629-0005/Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=27896#c1Issue Tracking
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