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Vulnerability record · CVE-2009-3547 · published 4 November 2009

CVE-2009-3547: Linux kernel race condition vulnerability

Linux · Linux Kernel

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.

7.0 CVSS 3.1 High EPSS 4.9% · top 8.2% CWE-362 · Race conditionCWE-476 · NULL pointer dereference
7.0CVSS 3.1 base score, v2 6.9
4.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
58References, 4 tagged exploit
16 Jun 2026Last modified by NVD

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.

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

Affected products

14 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ad3960243e55320d74195fb85c975e0a8cc4466c Broken Link
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html Broken LinkMailing ListThird Party Advisory
http://lists.vmware.com/pipermail/security-announce/2010/000082.html Mailing ListThird Party Advisory
http://lkml.org/lkml/2009/10/14/184 ExploitMailing List
http://lkml.org/lkml/2009/10/21/42 Mailing ListPatch
http://marc.info/?l=oss-security&m=125724568017045&w=2 Mailing ListThird Party Advisory
http://secunia.com/advisories/37351 Broken Link
http://secunia.com/advisories/38017 Broken Link
http://secunia.com/advisories/38794 Broken Link
http://secunia.com/advisories/38834 Broken Link
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc6 Broken Link
http://www.mandriva.com/security/advisories?name=MDVSA-2009:329 Broken Link
http://www.redhat.com/support/errata/RHSA-2009-1672.html Broken Link
http://www.securityfocus.com/archive/1/512019/100/0/threaded Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/36901 Broken LinkExploitThird Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/usn-864-1 Third Party Advisory
http://www.vupen.com/english/advisories/2010/0528 Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=530490 Issue TrackingPatchThird Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11513 Broken LinkThird Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7608 Broken LinkThird Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9327 Broken LinkThird Party Advisory
https://rhn.redhat.com/errata/RHSA-2009-1540.html Third Party Advisory
https://rhn.redhat.com/errata/RHSA-2009-1541.html Third Party Advisory
https://rhn.redhat.com/errata/RHSA-2009-1548.html Third Party Advisory
https://rhn.redhat.com/errata/RHSA-2009-1550.html Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00190.html Mailing List
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ad3960243e55320d74195fb85c975e0a8cc4466c Broken Link
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html Broken LinkMailing ListThird Party Advisory
http://lists.vmware.com/pipermail/security-announce/2010/000082.html Mailing ListThird Party Advisory
http://lkml.org/lkml/2009/10/14/184 ExploitMailing List
http://lkml.org/lkml/2009/10/21/42 Mailing ListPatch
http://marc.info/?l=oss-security&m=125724568017045&w=2 Mailing ListThird Party Advisory
http://secunia.com/advisories/37351 Broken Link
http://secunia.com/advisories/38017 Broken Link

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Source: NIST National Vulnerability Database (record CVE-2009-3547), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.