CVE-2009-3547
CVE-2009-3547 is a high-severity vulnerability in Redhat Mrg Realtime with a CVSS 3.x base score of 7.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.
Key facts
- Severity: High (CVSS 3.x base score 7.0)
- CVSS v2: 6.9
- EPSS exploit prediction: 5% (91st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-362
- Affected product: Redhat Mrg Realtime
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2009-3547?
- CVE-2009-3547 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2009-3547 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2009-3547?
- CVE-2009-3547 primarily affects Redhat Mrg Realtime. In total, 32 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2009-3547?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2009-3547 published?
- CVE-2009-3547 was published on 2009-11-04 and last updated on 2026-06-16.
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
Affected products (32)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.32:rc5:*:*:*:*:*:*
- cpe:2.3:o:novell:linux_desktop:9:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:11.2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_desktop:10:sp2:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:10:sp2:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:9.10:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:10:*:*:*:*:*:*:*
- cpe:2.3:a:vmware:vma:4.0:*:*:*:*:*:*:*
- cpe:2.3:o:vmware:esx:4.0:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:mrg_realtime:1.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:4.8:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:5.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:3.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:4.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:3.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:4.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
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