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CVE-2009-3547

Multiple race conditions in fs/pipe.c in the Linux kernel before 2.6.32-rc6 allow local users to cause a denial of service (NULL pointer dereference and system crash) or gain privileges by attempting to open an anonymous pipe via a /proc/*/fd/ pathname.

Published:Oct 14, 2009

Last Modified:Apr 23, 2026

EPS:Nov 4, 2009

EPSS Score:0.03154

CVSS Score:7

Affected Products

Vendor

Product

Action

Vendor

Canonical

Product

Ubuntu Linux

Canonical

Ubuntu Linux

Vendor

Fedoraproject

Product

Fedora

Fedoraproject

Fedora

Vendor

Linux

Product

Linux Kernel

Linux

Linux Kernel

Vendor

Novell

Product

Linux Desktop

Novell

Linux Desktop

Vendor

Opensuse

Product

Opensuse

Opensuse

Opensuse

Vendor

Redhat

Product

Enterprise Linux

Redhat

Enterprise Linux

Vendor

Redhat

Product

Enterprise Linux Desktop

Redhat

Enterprise Linux Desktop

Vendor

Redhat

Product

Enterprise Linux Eus

Redhat

Enterprise Linux Eus

Vendor

Redhat

Product

Enterprise Linux Server

Redhat

Enterprise Linux Server

Vendor

Redhat

Product

Enterprise Linux Workstation

Redhat

Enterprise Linux Workstation

Vendor

Redhat

Product

Enterprise Mrg

Redhat

Enterprise Mrg

Vendor

Redhat

Product

Mrg Realtime

Redhat

Mrg Realtime

Vendor

Redhat

Product

Rhel Eus

Redhat

Rhel Eus

Vendor

Suse

Product

Suse Linux Enterprise Desktop

Suse

Suse Linux Enterprise Desktop

Vendor

Suse

Product

Suse Linux Enterprise Server

Suse

Suse Linux Enterprise Server

Vendor

Vmware

Product

Esx

Vmware

Esx

Vendor

Vmware

Product

Vma

Vmware

Vma

Exploits

http://lkml.org/lkml/2009/10/14/184 http://www.securityfocus.com/bid/36901 http://lkml.org/lkml/2009/10/14/184 http://www.securityfocus.com/bid/36901 https://www.exploit-db.com/exploits/9844 https://www.exploit-db.com/exploits/10018 https://www.exploit-db.com/exploits/33321 https://www.exploit-db.com/exploits/33322 https://www.exploit-db.com/exploits/40812

Common Weakness Enumeration

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-476 NULL Pointer Dereference

CWE-662 Improper Synchronization

CWE-672 Operation on a Resource after Expiration or Release

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-25 Forced Deadlock

CAPEC-26 Leveraging Race Conditions

CAPEC-27 Leveraging Race Conditions via Symbolic Links

CAPEC-29 Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions

Related CVEs

CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…

CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…

CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …

CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…

CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…

CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…

CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…

CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…

CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…

CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ad3960243e55320d74195fb85c975e0a8cc4466c

http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.html

http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html

http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html

http://lists.vmware.com/pipermail/security-announce/2010/000082.html

http://lkml.org/lkml/2009/10/14/184

http://lkml.org/lkml/2009/10/21/42

http://marc.info/?l=oss-security&m=125724568017045&w=2

http://secunia.com/advisories/37351

http://secunia.com/advisories/38017

http://secunia.com/advisories/38794

http://secunia.com/advisories/38834

http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc6

http://www.mandriva.com/security/advisories?name=MDVSA-2009:329

http://www.redhat.com/support/errata/RHSA-2009-1672.html

http://www.securityfocus.com/archive/1/512019/100/0/threaded

http://www.securityfocus.com/bid/36901

http://www.ubuntu.com/usn/usn-864-1

http://www.vupen.com/english/advisories/2010/0528

https://bugzilla.redhat.com/show_bug.cgi?id=530490

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11513

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7608

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9327

https://rhn.redhat.com/errata/RHSA-2009-1540.html

https://rhn.redhat.com/errata/RHSA-2009-1541.html

https://rhn.redhat.com/errata/RHSA-2009-1548.html

https://rhn.redhat.com/errata/RHSA-2009-1550.html

https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00190.html

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ad3960243e55320d74195fb85c975e0a8cc4466c

http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.html

http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html

http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html

http://lists.vmware.com/pipermail/security-announce/2010/000082.html

http://lkml.org/lkml/2009/10/14/184

http://lkml.org/lkml/2009/10/21/42

http://marc.info/?l=oss-security&m=125724568017045&w=2

http://secunia.com/advisories/37351

http://secunia.com/advisories/38017

http://secunia.com/advisories/38794

http://secunia.com/advisories/38834

http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc6

http://www.mandriva.com/security/advisories?name=MDVSA-2009:329

http://www.redhat.com/support/errata/RHSA-2009-1672.html

http://www.securityfocus.com/archive/1/512019/100/0/threaded

http://www.securityfocus.com/bid/36901

http://www.ubuntu.com/usn/usn-864-1

http://www.vupen.com/english/advisories/2010/0528

https://bugzilla.redhat.com/show_bug.cgi?id=530490

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11513

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7608

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9327

https://rhn.redhat.com/errata/RHSA-2009-1540.html

https://rhn.redhat.com/errata/RHSA-2009-1541.html

https://rhn.redhat.com/errata/RHSA-2009-1548.html

https://rhn.redhat.com/errata/RHSA-2009-1550.html

https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00190.html

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High