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."
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 4.0 | fai-kernels | 1.17+etch.13etch5 | DSA-1428-1 |
| Debian 4.0 | linux-2.6 | 2.6.18.dfsg.1-13etch5 | DSA-1428-1 |
| Debian 4.0 | user-mode-linux | 2.6.18-1um-2etch.13etch5 | DSA-1428-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +11 | 2.6.18-53.1.4.el5 | RHSA-2007:0993 |
| RHEL 4 | kernel +10 | 2.6.9-67.0.1.EL | RHSA-2007:1104 |
Advisories 3
- RHSA-2007:0993 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2007:1104 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1428-1 fai-kernels linux-2.6 user-mode-linux - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 28162 third-party-advisory
- RHSA-2007:1104 vendor-advisory
- 28806 third-party-advisory
- 28706 third-party-advisory
- kernel-ieee80211-dos(38247) vdb-entry
- MDKSA-2007:226 vendor-advisory
- 27824 third-party-advisory
- 26337 vdb-entry
- MDVSA-2008:008 vendor-advisory
- SUSE-SA:2007:059 vendor-advisory
- DSA-1428 vendor-advisory
- 27912 third-party-advisory
- 28033 third-party-advisory
- RHSA-2007:0993 vendor-advisory
- oval:org.mitre.oval:def:10596 vdb-entry signature
- USN-558-1 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23
- MDVSA-2008:105 vendor-advisory
- SUSE-SA:2007:064 vendor-advisory
- SUSE-SA:2008:006 vendor-advisory
- USN-574-1 vendor-advisory
- 27555 third-party-advisory
- 28971 third-party-advisory
- 28170 third-party-advisory
- MDKSA-2007:232 vendor-advisory
- 27614 third-party-advisory
- ADV-2007-3718 vdb-entry
- http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commitdiff%3Bh=04045f98e0457aba7d4e6736f37eed189c48a5f7
- USN-578-1 vendor-advisory