CVE-2009-3726
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…
- 7.8HighCVSS base score
- 12.0%Exploitation in 30 daysEPSS · top 3.8% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- Linux Kernel < 2.6.31-rc4 - 'nfs4_proc_lock()' Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 10202dos, linuxpublished 15 Oct 2009Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By redhat
- 24 days later
· 24 days later
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 12.0% · top 3.8% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
n/a
- affected n/a
References
References25
- https://bugzilla.redhat.com/show_bug.cgi?id=529227 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d953126a28f97ec965d23c69fd5795854c048f30 (opens in a new tab)x_refsource_CONFIRMx_transferred
- oval:org.mitre.oval:def:9734 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- SUSE-SA:2009:061 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-864-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 38794 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [security-announce] 20100303 VMSA-2010-0004 ESX Service Console and vMA third party updates (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 36936 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- MDVSA-2009:329 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- oval:org.mitre.oval:def:6636 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- SUSE-SA:2009:056 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SA:2010:012 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 37909 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- RHSA-2010:0474 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2009:1670 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- MDVSA-2011:051 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- SUSE-SA:2009:064 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 38834 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 40218 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [linux-nfs] 20081022 kernel oops in nfs4_proc_lock (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.31/ChangeLog-2.6.31-rc4 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20091105 CVE request: kernel: NULL pointer dereference in nfs4_proc_lock() (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20091105 Re: CVE request: kernel: NULL pointer dereference in nfs4_proc_lock() (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-2005 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- ADV-2010-0528 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-3698 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-3726)Record last updated .