CVE-2009-3286

Severity: medium (CVSS 4.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-09-22 · updated 2026-06-16
Weakness: CWE-264

Description

NFSv4 in the Linux kernel 2.6.18, and possibly other versions, does not properly clean up an inode when an O_EXCL create fails, which causes files to be created with insecure settings such as setuid bits, and possibly allows local users to gain privileges, related to the execution of the do_open_permission function even when a create fails.

Affected products

Linux kernel: 2.6.18

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=81ac95c5
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/37105
http://secunia.com/advisories/38794
http://secunia.com/advisories/38834
http://www.openwall.com/lists/oss-security/2009/09/21/2
http://www.ubuntu.com/usn/USN-852-1
http://www.vupen.com/english/advisories/2010/0528
https://bugzilla.redhat.com/show_bug.cgi?id=524520
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7527
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9757

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