CVE-2011-1749: The nfs_addmntent function in support/nfs/nfs_mntent.c in the mount.nsf tool in nfs-utils before 1.2.4 attempt

Q: How do I fix CVE-2011-1749?

nfs-utils: upgrade to newer than 1.2.3. Exact commands for each OS are on this page.

Q: Is CVE-2011-1749 being exploited?

CVE-2011-1749 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2011-1749 affect?

CVE-2011-1749 affects nfs-utils. Severity is low (CVSS 3.3). The nfs_addmntent function in support/nfs/nfs_mntent.c in the mount.nsf tool in nfs-utils before 1.2.4 attempts to append to the /etc/mtab file without first checking whether resource limits would interfere, which allows local users to corr

Q: How urgent is CVE-2011-1749?

Priority 24/100. On your watchlist

Routine

LOW 3.3WATCHLISTUPGRADE

CVE-2011-1749 is a low-severity flaw (CVSS 3.3) affecting nfs-utils. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The nfs_addmntent function in support/nfs/nfs_mntent.c in the mount.nsf tool in nfs-utils before 1.2.4 attempts to append to the /etc/mtab file without first checking whether resource limits would interfere, which allows local users to corrupt this file via a process with a small RLIMIT_FSIZE value, a related issue to CVE-2011-1089.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	3.3 (Low)
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-20
Published	2014-02-26
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: linux-nfs

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-02-26 15:55 UTCPublished CVE record published
2026-06-16 23:29 UTCUpdated Record last modified

linux-nfs nfs-utils UPGRADE

Affected: <= 1.2.3 · 1.2.0 · 1.2.1 · 1.2.2

Fixed in: newer than 1.2.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy nfs-utils || rpm -q nfs-utils || nfs-utils --version

2. UPGRADE to newer than 1.2.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade nfs-utils

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade nfs-utils

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2011-1749?

nfs-utils: upgrade to newer than 1.2.3. Exact commands for each OS are on this page.

Is CVE-2011-1749 being exploited?

CVE-2011-1749 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2011-1749 affect?

CVE-2011-1749 affects nfs-utils. Severity is low (CVSS 3.3). The nfs_addmntent function in support/nfs/nfs_mntent.c in the mount.nsf tool in nfs-utils before 1.2.4 attempts to append to the /etc/mtab file without first checking whether resource limits would interfere, which allows local users to corr

How urgent is CVE-2011-1749?

Priority 24/100. On your watchlist

Related CVEs

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CVE-2019-3689 MEDIUM 5.1 UPGRADE The nfs-utils package in SUSE Linux Enterprise Server 12 before and including version 1.3.0-34.18.1 and in SUS
CVE-2013-1923 LOW 3.2 UPGRADE rpc-gssd in nfs-utils before 1.2.8 performs reverse DNS resolution for server names during GSSAPI authenticati
CVE-2011-2500 HIGH 7.5 UPGRADE The host_reliable_addrinfo function in support/export/hostname.c in nfs-utils before 1.2.4 does not properly u
CVE-2009-0180 HIGH 7.5 UPGRADE Certain Fedora build scripts for nfs-utils before 1.1.2-9.fc9 on Fedora 9, and before 1.1.4-6.fc10 on Fedora 1

References

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