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.
Published 2009-12-02 16:30:01
Updated 2023-02-13 02:20:40
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Denial of service

Products affected by CVE-2009-4027

Threat overview for CVE-2009-4027

Top countries where our scanners detected CVE-2009-4027
Top open port discovered on systems with this issue 52869
IPs affected by CVE-2009-4027 235,061
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2009-4027!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2009-4027

5.33%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 92 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2009-4027

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.1
HIGH AV:N/AC:M/Au:N/C:N/I:N/A:C
8.6
6.9
NIST

CWE ids for CVE-2009-4027

Vendor statements for CVE-2009-4027

  • Red Hat 2009-12-03
    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.
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