CVE-2021-38604
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.
Published Aug 12, 2021 · updated Oct 14, 2026 · gnu glibc
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.
Timeline
Detection, updates, and resolution for this record.
Aug 12, 2021 · NIST NVD
Detected
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.
Oct 14, 2026 · NIST NVD
Updated
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
- cpe fedoraproject/fedora35
- cpe gnu/glibcversion unspecified
- cpe oracle/communications cloud native core binding support function22.1.3
- cpe oracle/communications cloud native core network function cloud native environment22.1.0
- cpe oracle/communications cloud native core network repository function22.1.2
- cpe oracle/communications cloud native core network repository function22.2.0
- cpe oracle/communications cloud native core security edge protection proxy22.1.1
- cpe oracle/communications cloud native core unified data repository22.2.0
Sources
- CVE.orgCVE-2021-38604
Official CVE identifier
cve.org - FIRST EPSSCVE-2021-38604
30-day exploitation probability 3.7%
first.org - NIST NVDCVE-2021-38604
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.
nvd.nist.gov