HOME VULNERABILITIESCVE-2009-3547

HIGHPOC

CVE-2009-3547

CWE-362Published: November 4, 2009· Updated: Jun 16, 2026

7.0

CVSS v3.1

Official Description

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.

Technical Analysis

CVE-2009-3547 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.0.

A proof-of-concept (PoC) exploit exists for CVE-2009-3547. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges Req.Low

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

Canonical1 product(s)

ubuntu linux

Fedora1 product(s)

fedora

Linux1 product(s)

linux kernel

novell1 product(s)

linux desktop

openSUSE1 product(s)

opensuse

Red Hat5 product(s)

mrg realtimeenterprise linux desktopenterprise linux eusenterprise linux serverenterprise linux workstation

SUSE2 product(s)

suse linux enterprise desktopsuse linux enterprise server

VMware2 product(s)

vmaesx

Source: NVD CPE · 27 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

All References (58)

→

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ad3960243e55320d74195fb85c975e0a8cc4466cBroken Link

→

http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.htmlMailing List · Third Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.htmlMailing List · Third Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.htmlMailing List · Third Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlBroken Link · Mailing List · Third Party Advisory

→

http://lists.vmware.com/pipermail/security-announce/2010/000082.htmlMailing List · Third Party Advisory

→

http://lkml.org/lkml/2009/10/14/184Exploit · Mailing List

→

http://lkml.org/lkml/2009/10/21/42Mailing List · Patch

→

http://marc.info/?l=oss-security&m=125724568017045&w=2Mailing List · Third Party Advisory

→

http://secunia.com/advisories/37351Broken Link

→

http://secunia.com/advisories/38017Broken Link

→

http://secunia.com/advisories/38794Broken Link

→

http://secunia.com/advisories/38834Broken Link

→

http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc6Broken Link

→

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

Quick Facts

CVE IDCVE-2009-3547

CVSS Score7.0 / 10

SeverityHIGH

WeaknessCWE-362

CISA KEVNo

ExploitPOC

Affected8 vendor(s)

PublishedNov 4, 2009

Related CVEs (CWE-362)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2009-3547 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

← All Vulnerabilities·Search for CVE-2009-3547·NVD