CVE-2009-1243

Description

net/ipv4/udp.c in the Linux kernel before 2.6.29.1 performs an unlocking step in certain incorrect circumstances, which allows local users to cause a denial of service (panic) by reading zero bytes from the /proc/net/udp file and unspecified other files, related to the "udp seq_file infrastructure."

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.07%
Third-Party Advisory secunia.com Third-Party Advisory openwall.com Third-Party Advisory vigilance.fr Third-Party Advisory securityfocus.com Third-Party Advisory vupen.com Third-Party Advisory ibmcloud.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1 broken link
http://secunia.com/advisories/34478 third party advisory broken link
http://openwall.com/lists/oss-security/2009/04/01/4 patch mailing list third party advisory
http://www.securityfocus.com/bid/34329 patch vdb entry broken link third party advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/49595 third party advisory vdb entry
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=30842f2989aacfaba3ccb39829b3417be9313dbe broken link
http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-proc-net-udp-8586 third party advisory patch
http://www.vupen.com/english/advisories/2009/0924 broken link third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2009-1243?
CVE-2009-1243 has been scored as a medium severity vulnerability.
How to fix CVE-2009-1243?
To fix CVE-2009-1243, 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-2009-1243 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2009-1243 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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