Vulnerability Description
libnfs through 6.0.2 before 55c18ea does not validate a string size, leading to an integer overflow during a connection to a crafted NFS server. This occurs in libnfs_zdr_string in lib/libnfs-zdr.c.
CVSS Score
7.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
Related Weaknesses (CWE)
References
- https://github.com/sahlberg/libnfs/commit/55c18ea33a83d667f79f0ef209c96895795c72
- https://lists.debian.org/debian-lts-announce/2026/07/msg00031.html
FAQ
What is CVE-2026-53689?
CVE-2026-53689 is a vulnerability with a CVSS score of 7.1 (HIGH). libnfs through 6.0.2 before 55c18ea does not validate a string size, leading to an integer overflow during a connection to a crafted NFS server. This occurs in libnfs_zdr_string in lib/libnfs-zdr.c.
How severe is CVE-2026-53689?
CVE-2026-53689 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53689?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.