CVE-2009-3726
The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the NFSv4 client in the Linux kernel before 2...
7.8 HighPublic exploitFix available
CVE-2009-3726 is a high vulnerability (CVSS 7.8) in Linux Kernel, published November 9, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 12.0%, the 96th percentile. Fixed in linux-2.6 2.6.18.dfsg.1-26etch2.
The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the NFSv4 client in the Linux kernel before 2.6.31-rc4 allows remote NFS servers to cause a denial of service (NULL pointer dereference and panic) by sending a certain response containing incorrect file attributes, which trigger attempted use of an open file that lacks NFSv4 state.
Exploit likelihood
12.0%Up 6.6 points since Feb 4, 2022
What each source reports
NVD Score used
The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the NFSv4 client in the Linux kernel before 2.6.31-rc4 allows remote NFS servers to cause a denial of service (NULL pointer dereference and panic) by sending a certain response containing incorrect file attributes, which trigger attempted use of an open file that lacks NFSv4 state.
- Record
CVE-2009-3726- CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the NFSv4 client in the Linux kernel before 2.6.31-rc4 allows remote NFS servers to cause a denial of service (NULL pointer dereference and panic) by sending a certain response containing incorrect file attributes, which trigger attempted use of an open file that lacks NFSv4 state.
- Record
CVE-2009-3726- Updated
- 2026-11-02
EUVDEUVD-2009-3698 No score
The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the NFSv4 client in the Linux kernel before 2.6.31-rc4 allows remote NFS servers to cause a denial of service (NULL pointer dereference and panic) by sending a certain response containing incorrect file attributes, which trigger attempted use of an open file that lacks NFSv4 state.
- Record
EUVD-2009-3698- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-76cp-8jf4-8pv2 No score
The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the NFSv4 client in the Linux kernel before 2...
The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the NFSv4 client in the Linux kernel before 2.6.31-rc4 allows remote NFS servers to cause a denial of service (NULL pointer dereference and panic) by sending a certain response containing incorrect file attributes, which trigger attempted use of an open file that lacks NFSv4 state.
- Record
GHSA-76cp-8jf4-8pv2- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
linux-2.6Debian:4.0 |
before 2.6.18.dfsg.1-26etch2, plus listed versions 2.6.18.dfsg.1-122.6.18.dfsg.1-12etch12.6.18.dfsg.1-12etch22.6.18.dfsg.1-132.6.18.dfsg.1-13etch1 Show 33 moreShow less2.6.18.dfsg.1-13etch22.6.18.dfsg.1-13etch32.6.18.dfsg.1-13etch42.6.18.dfsg.1-13etch52.6.18.dfsg.1-13etch62.6.18.dfsg.1-13lenny12.6.18.dfsg.1-142.6.18.dfsg.1-152.6.18.dfsg.1-162.6.18.dfsg.1-172.6.18.dfsg.1-17etch12.6.18.dfsg.1-182.6.18.dfsg.1-18etch12.6.18.dfsg.1-18etch32.6.18.dfsg.1-18etch42.6.18.dfsg.1-18etch52.6.18.dfsg.1-18etch62.6.18.dfsg.1-192.6.18.dfsg.1-202.6.18.dfsg.1-212.6.18.dfsg.1-222.6.18.dfsg.1-22etch12.6.18.dfsg.1-22etch22.6.18.dfsg.1-22etch32.6.18.dfsg.1-232.6.18.dfsg.1-23etch12.6.18.dfsg.1-242.6.18.dfsg.1-24etch12.6.18.dfsg.1-24etch22.6.18.dfsg.1-24etch32.6.18.dfsg.1-24etch42.6.18.dfsg.1-262.6.18.dfsg.1-26etch1 |
2.6.18.dfsg.1-26etch2 |
linux-2.6.24Debian:4.0 |
before 2.6.24-6~etchnhalf.9etch3, plus listed versions 2.6.24-5~etchnhalf.12.6.24-6~etchnhalf.12.6.24-6~etchnhalf.22.6.24-6~etchnhalf.32.6.24-6~etchnhalf.4 Show 10 moreShow less2.6.24-6~etchnhalf.52.6.24-6~etchnhalf.62.6.24-6~etchnhalf.72.6.24-6~etchnhalf.82.6.24-6~etchnhalf.8etch12.6.24-6~etchnhalf.8etch22.6.24-6~etchnhalf.8etch32.6.24-6~etchnhalf.92.6.24-6~etchnhalf.9etch12.6.24-6~etchnhalf.9etch2 |
2.6.24-6~etchnhalf.9etch3 |
kernel-rtRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-debugRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-debug-debuginfoRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-debug-develRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-debuginfoRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-debuginfo-commonRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-develRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-docRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
Show 87 moreShow less
| Package | Affected | Fixed |
|---|---|---|
kernel-rt-traceRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-trace-debuginfoRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-trace-develRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-vanillaRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-vanilla-debuginfoRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernel-rt-vanilla-develRed Hat:enterprise_mrg:1::el5 |
before 0:2.6.24.7-139.el5rt | 0:2.6.24.7-139.el5rt |
kernelRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-PAERed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-PAE-debuginfoRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-PAE-develRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-debugRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-debug-debuginfoRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-debug-develRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-debuginfoRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-debuginfo-commonRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-develRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-docRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-headersRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-xenRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-xen-debuginfoRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-xen-develRed Hat:enterprise_linux:5::client |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernelRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-PAERed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-PAE-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-PAE-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-debugRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-debug-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-debug-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-debuginfo-commonRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-docRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-headersRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-kdumpRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-kdump-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-kdump-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-xenRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-xen-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernel-xen-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-164.9.1.el5 | 0:2.6.18-164.9.1.el5 |
kernelRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-debuginfoRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-develRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-docRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-hugememRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-hugemem-develRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-largesmpRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-largesmp-develRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-smpRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-smp-develRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-xenURed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-xenU-develRed Hat:enterprise_linux:4::as |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernelRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-debuginfoRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-develRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-docRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-hugememRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-hugemem-develRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-largesmpRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-largesmp-develRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-smpRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-smp-develRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-xenURed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-xenU-develRed Hat:enterprise_linux:4::desktop |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernelRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-debuginfoRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-develRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-docRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-hugememRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-hugemem-develRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-largesmpRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-largesmp-develRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-smpRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-smp-develRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-xenURed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-xenU-develRed Hat:enterprise_linux:4::es |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernelRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-debuginfoRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-develRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-docRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-hugememRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-hugemem-develRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-largesmpRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-largesmp-develRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-smpRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-smp-develRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-xenURed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
kernel-xenU-develRed Hat:enterprise_linux:4::ws |
before 0:2.6.9-89.0.26.EL | 0:2.6.9-89.0.26.EL |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Linux Kernel < 2.6.31-rc4 - 'nfs4_proc_lock()' Denial of Service | 2009-10-15 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV |
References
bugzilla.redhat.com/show_bug.cgi?id=529227
git.kernel.org?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d953126a28f97ec965d23c69fd5795854c048f30
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9734
lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html
ubuntu.com/usn/usn-864-1
secunia.com/advisories/38794
Show 100 moreShow less
lists.vmware.com/pipermail/security-announce/2010/000082.html
securityfocus.com/bid/36936
mandriva.com/security/advisories?name=MDVSA-2009:329
redhat.com/support/errata/RHSA-2010-0474.html
spinics.net/linux/lists/linux-nfs/msg03357.html
kernel.org/pub/linux/kernel/v2.6/testing/v2.6.31/ChangeLog-2.6.31-rc4
openwall.com/lists/oss-security/2009/11/05/1
debian.org/security/2010/dsa-2005
vupen.com/english/advisories/2010/0528
nvd.nist.gov/vuln/detail/CVE-2009-3726
access.redhat.com/errata/RHSA-2009:1635
github.com/advisories/GHSA-76cp-8jf4-8pv2
security.access.redhat.com/data/csaf/v2/advisories/2009/rhsa-2009_1635.json
cve.org/CVERecord?id=CVE-2009-3726
kbase.redhat.com/faq/docs/DOC-20536