CVE-2009-1243

MEDIUM

Linux Kernel < 2.6.29.1 - Improper Locking

Title source: rule

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."

References (8)

[Broken Link] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=30842f2989aacfaba3ccb39829b3417be9313dbe

[Mailing List, Patch, Third Party Advisory] http://openwall.com/lists/oss-security/2009/04/01/4

[Broken Link, Third Party Advisory] http://secunia.com/advisories/34478

[Patch, Third Party Advisory] http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-proc-net-udp-8586

[Broken Link] http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1

[Broken Link, Patch, Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/34329

[Broken Link, Third Party Advisory] http://www.vupen.com/english/advisories/2009/0924

[Third Party Advisory, VDB Entry] https://exchange.xforce.ibmcloud.com/vulnerabilities/49595

Scores

CVSS v3 5.5

EPSS 0.0007

EPSS Percentile 21.8%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-667

Status draft

Affected Products (1)

linux/linux_kernel < 2.6.29.1

Timeline

Published Apr 06, 2009

Tracked Since Feb 18, 2026