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Debian 11 libnfs Integer Overflow Security Fix DLA-4689-1 CVE-2026-53689

debian lts
Calendar Grey July 19, 2026
Scroller Debian Lts
A libnfs issue on Debian LTS fixed due to missing string validation led to an integer overflow. Update recommended.
An issue has been found in libnfs, am NFS client library
Topics%20covered

Topics Covered

security advisory security update integer overflow deblts libnfs CVE-2026-53689

Summary

An issue has been found in libnfs, am NFS client library.
The issue is related to to a missing validation of a string size that
might lead to an integer overflow.


For Debian 11 bullseye, this problem has been fixed in version
4.0.0-1+deb11u1.

For Debian 12 bookworm, this problem has been fixed in version
4.0.0-1+deb12u1.

We recommend that you upgrade your libnfs packages.

For the detailed security status of libnfs please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libnfs

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS



Severity
important
Lowest
Low
Medium
High
Critical

Package: libnfs
Version: 4.0.0-1+deb11u1 4.0.0-1+deb12u1
CVE ID: CVE-2026-53689
Debian Bug: 1139731

Topics%20covered

Topics Covered

security advisory security update integer overflow deblts libnfs CVE-2026-53689

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