CVE-2016-1237 Auth bypass in n/a

What is CVE-2016-1237?

CVE-2016-1237 is a medium-severity authentication bypass vulnerability in Linux kernel, published on 29 Jun 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

nfsd in the Linux kernel through 4.6.3 allows local users to bypass intended file-permission restrictions by setting a POSIX ACL, related to nfs2acl.c, nfs3acl.c, and nfs4acl.c.

Weakness: CWE-284

Which versions are affected by CVE-2016-1237?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2016-1237?

Apply the vendor's patch.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2016-1237 being exploited?

There is no known exploitation of CVE-2016-1237 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2016-1237, GHSA-r3gq-m2h3-69wv, UBUNTU-CVE-2016-1237.