Description
In librt in the GNU C Library (aka glibc) through 2.34, sysdeps/unix/sysv/linux/mq_notify.c mishandles certain NOTIFY_REMOVED data, leading to a NULL pointer dereference. NOTE: this vulnerability was introduced as a side effect of the CVE-2021-33574 fix.
Affected products
gnu: glibc; fedoraproject: fedora; oracle: communications cloud native core binding support function; oracle: communications cloud native core network function cloud native environment; oracle: communications cloud native core network repository function; oracle: communications cloud native core security edge protection proxy; oracle: communications cloud native core unified data repository; oracle: enterprise operations monitor
References10
- sourceware.org/bugzilla/show_bug.cgi?id=28213 Issue TrackingPatchThird Party Advisory
- www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory
- sourceware.org/bugzilla/show_bug.cgi?id=28213 Issue TrackingPatchThird Party Advisory
- www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory
- blog.tuxcare.com/cve/tuxcare-team-identifies-cve-2021-38604-a-n… ExploitThird Party Advisory
- blog.tuxcare.com/cve/tuxcare-team-identifies-cve-2021-38604-a-n… ExploitThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.…
- security.gentoo.org/glsa/202208-24 Third Party Advisory
- security.netapp.com/advisory/ntap-20210909-0005/ Third Party Advisory
- sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=4cc79c2177447430…
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 4% percentile: 90 · as of 4 November 2026
- CWE
- CWE-476
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