CVE-2009-1243

low-risk
Published 2009-04-06

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."

Do I need to act?

-
0.07% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (16)

Broken Link http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=...
Mailing List http://openwall.com/lists/oss-security/2009/04/01/4
Broken Link http://secunia.com/advisories/34478
Patch http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-proc-net-ud...
Broken Link http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1
Broken Link http://www.securityfocus.com/bid/34329
Broken Link http://www.vupen.com/english/advisories/2009/0924
Third Party Advisory https://exchange.xforce.ibmcloud.com/vulnerabilities/49595
Broken Link http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=...
Mailing List http://openwall.com/lists/oss-security/2009/04/01/4
Broken Link http://secunia.com/advisories/34478
Patch http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-proc-net-ud...
Broken Link http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1
Broken Link http://www.securityfocus.com/bid/34329
Broken Link http://www.vupen.com/english/advisories/2009/0924
Third Party Advisory https://exchange.xforce.ibmcloud.com/vulnerabilities/49595
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal