All vulnerabilities

Servers and applications

CVE-2021-27645

The nameserver caching daemon (nscd) in the GNU C Library (aka glibc or libc6) 2.29 through 2.33, when processing a request for netgroup lookup, may crash due to a double-free, potentially resulting in degraded service or Denial of Service on the local system. This is related to netgroupcache.c.

Severity
Low 2.5
Published
24 Feb 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
  • From 2.29 up to 2.33

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-27645
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-27645