VULNERABILITY INTELLIGENCE

CVE-2021-38604

CVSS score7.5 HIGH

EPSS probability3.72%

CISA KEVNot currently listed

Published2021-08-12

Last modified2026-10-14

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.