CVE-2021-27645 - CVE House
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Status published Unknown CVE-2021-27645

The nameserver caching daemon (nscd) in the GNU C Library...

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

glibc, fedora, debian linux
Vulnerable Versions:
2.29, 33, 34, 10.0

Timeline

Official Publish: February 24th, 2021
Last Modified: June 9th, 2025
Added to House: July 21st, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.