CVE-2009-4027

Description

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.

Category

7.1
CVSS
Severity: High
CVSS 2.0 •
EPSS 1.14% Top 25%
Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/37170 vdb entry
http://www.redhat.com/support/errata/RHSA-2010-0380.html vendor advisory
http://www.ubuntu.com/usn/usn-864-1 vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html vendor advisory
http://www.debian.org/security/2010/dsa-1996 vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=541149
http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091201.gz patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=827d42c9ac91ddd728e4f4a31fefb906ef2ceff7
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11583 vdb entry signature
http://secunia.com/advisories/38017 third party advisory
http://secunia.com/advisories/38492 third party advisory

Frequently Asked Questions

What is the severity of CVE-2009-4027?
CVE-2009-4027 has been scored as a high severity vulnerability.
How to fix CVE-2009-4027?
To fix CVE-2009-4027, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-4027 being actively exploited in the wild?
It is possible that CVE-2009-4027 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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