CVE-2009-3726
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 12.0% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 12.0% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 12.0% · EPSS, next 30 days
- Weakness
- CWE-399
- Record status
- Modified
Affected
- Linux Kernel ≤ 2.6.31
- Linux Kernel 2.2.27
- Linux Kernel 2.4.1
- Linux Kernel 2.4.2
- Linux Kernel 2.4.3
- Linux Kernel 2.4.4
- Linux Kernel 2.4.5
- Linux Kernel 2.4.6
Attack profile CVSS 2.0 · 7.8
- Attack vector
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
Raw vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2009-3726.md and follow it. Check whether this project is affected by CVE-2009-3726. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.31/ChangeLog-2.6.31-rc4
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.31/ChangeLog-2.6.31-rc4
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d953126a28f97ec965d23c69fd5795854c048f30
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html
- http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html
- http://lists.vmware.com/pipermail/security-announce/2010/000082.html
- http://secunia.com/advisories/37909
- http://secunia.com/advisories/38794
- http://secunia.com/advisories/38834
- http://secunia.com/advisories/40218
- http://www.debian.org/security/2010/dsa-2005
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.31/ChangeLog-2.6.31-rc4
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:329
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
- http://www.openwall.com/lists/oss-security/2009/11/05/1
- http://www.openwall.com/lists/oss-security/2009/11/05/4
- http://www.redhat.com/support/errata/RHSA-2009-1670.html
- http://www.redhat.com/support/errata/RHSA-2010-0474.html
- http://www.securityfocus.com/bid/36936
- http://www.spinics.net/linux/lists/linux-nfs/msg03357.html
- http://www.ubuntu.com/usn/usn-864-1
- http://www.vupen.com/english/advisories/2010/0528
- https://bugzilla.redhat.com/show_bug.cgi?id=529227
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6636
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9734