PT-2009-5837 · Linux+1 · Linux Kernel+1

Eugene Teo · Published 2009-11-03 · Updated 2026-02-10 · CVE-2009-3547

Positive Technologies (AI Summary)

CVSS v2.0

6.9

Medium

Base vector

AV:L/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.32-rc6

Description The issue is related to multiple race conditions in the fs/pipe.c file of the Linux kernel. This can be exploited by local users to cause a denial of service, resulting in a NULL pointer dereference and system crash, or potentially gain privileges. The exploitation involves attempting to open an anonymous pipe via a /proc/*/fd/ pathname.

Recommendations For Linux kernel versions prior to 2.6.32-rc6, update to version 2.6.32-rc6 or later to resolve the issue.

Exploit

Fix

DoS

NULL Pointer Dereference

Race Condition

Weakness Enumeration

CWE-672

CWE-476

CWE-362

Related Identifiers

CVE-2009-3547

DSA-1927-1

DSA-1928-1

DSA-1929-1

RHSA-2009:1540

RHSA-2009:1541

RHSA-2009:1548

RHSA-2009:1550

RHSA-2009:1587

RHSA-2009:1588

RHSA-2009:1672

RHSA-2009_1541

RHSA-2009_1548

Affected Products

Linux Kernel

Red Hat

References · 36

• 🔥 https://exploit-db.com/exploits/33321 · Exploit
• 🔥 http://lkml.org/lkml/2009/10/14/184 · Exploit
• 🔥 http://securityfocus.com/bid/36901 · Exploit
• 🔥 https://exploit-db.com/exploits/40812 · Exploit
• 🔥 https://exploit-db.com/exploits/33322 · Exploit
• 🔥 https://exploit-db.com/exploits/10018 · Exploit
• 🔥 https://exploit-db.com/exploits/9844 · Exploit
• http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.html · Vendor Advisory
• http://mandriva.com/security/advisories?name=MDVSA-2009:329 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=530490 · Patch
• http://lkml.org/lkml/2009/10/21/42 · Patch
• http://redhat.com/support/errata/RHSA-2009-1672.html · Vendor Advisory
• https://redhat.com/archives/fedora-package-announce/2009-November/msg00190.html · Vendor Advisory
• https://rhn.redhat.com/errata/RHSA-2009-1548.html · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html · Vendor Advisory