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Servers and applications

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. NOTE: this vulnerability was introduced as a side effect of the CVE-2021-33574 fix.

Severity
High 7.5
Published
12 Aug 2021
Last changed
14 Oct 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
GNU C LibraryServers and applications · cpe:a:gnu:glibc
  • Every version up to 2.34

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-38604
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-38604