CVE-2009-1243
MEDIUM · CVSS 5.5EPSS 0.3%EU EUVD
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."
Key facts
- CVSS score
- 5.5 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
- CWE-667
- EPSS score
- 0.3% (19th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-1242)
- Published
- April 6, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-1242 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- linux / linux kernel
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=30842f2989aacfaba3ccb39829b3417be9313dbe(Broken Link)
- http://openwall.com/lists/oss-security/2009/04/01/4(Mailing List, Patch, Third Party Advisory)
- http://secunia.com/advisories/34478(Broken Link, Third Party Advisory)
- http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-proc-net-udp-8586(Patch, Third Party Advisory)
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1(Broken Link)
- http://www.securityfocus.com/bid/34329(Broken Link, Patch, Third Party Advisory, VDB Entry)
- http://www.vupen.com/english/advisories/2009/0924(Broken Link, Third Party Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49595(Third Party Advisory, VDB Entry)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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