CVEvulnerability

CVE-2009-1243

5.5 MEDIUM Published 2009-04-06 Modified 2026-06-16 Official page ↗

Status: Modified
Published: 2009-04-06
Last modified: 2026-06-16
Assigner: [email protected]
CVSS 3.1 ([email protected]): 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected]): 2.1 LOW — AV:L/AC:L/Au:N/C:N/I:N/A:P
Weaknesses: CWE-667

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."

Affected configurations

• linux linux kernel (< 2.6.29.1)

Weakness · CWE (1)

CWE-667 Improper Locking weakness

Referenced by CWE · observed example (2)

CWE-667 Improper Locking weakness
CWE-832 Unlock of a Resource that is not Locked weakness

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
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