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CVE Database

CVE-2009-4027

Impact: Important
Public: 2009-11-30
CWE: CWE-617
Bugzilla: 541149: CVE-2009-4026 CVE-2009-4027 kernel: mac80211: fix spurious delBA handling

Details

The MITRE CVE dictionary describes this issue as:

Race condition in the mac80211 subsystem in the Linux kernel before 2.6.32-rc8-next-20091201 allows remote attackers to cause a denial of service (system crash) via a Delete Block ACK (aka DELBA) packet that triggers a certain state change in the absence of an aggregation session.

Find out more about CVE-2009-4027 from the MITRE CVE dictionary and NIST NVD.

Statement

Red Hat is aware of this issue and is tracking it via the following bug:
https://bugzilla.redhat.com/CVE-2009-4027.

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 3 and 4 as they do not have support for the mac80211 framework.

It did not affect the version of the Linux kernel as shipped with Red Hat Enterprise MRG as they do not include the upstream patch that introduced this vulnerability.

A future update will address this flaw in Red Hat Enterprise Linux 5.

CVSS v2 metrics

Base Score: 7.8
Base Metrics: AV:N/AC:L/Au:N/C:N/I:N/A:C
Access Vector: Network
Access Complexity: Low
Authentication: None
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
Red Hat Enterprise Linux EUS (v. 5.4 server) (kernel) RHSA-2010:0380 April 27, 2010
Red Hat Enterprise Linux version 5 (kernel) RHSA-2010:0178 March 29, 2010

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.