What’s Vulnerable › Vulnerabilities

CVE-2009-1630

• Severity: medium (CVSS 4.4 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: yes
• Published: 2009-05-14 · updated 2026-06-16
• Weakness: CWE-264

Description

The nfs_permission function in fs/nfs/dir.c in the NFS client implementation in the Linux kernel 2.6.29.3 and earlier, when atomic_open is available, does not check execute (aka EXEC or MAY_EXEC) permission bits, which allows local users to bypass permissions and execute files, as demonstrated by files on an NFSv4 fileserver.

Affected products

• Canonical Ubuntu Linux: 6.06, 8.04, 8.10, 9.04
• Debian Linux: 4.0, 5.0
• Linux kernel: through 2.6.29.3
• Opensuse: 11.0, 11.1
• VMware ESX: 2.5.5, 3.0.3, 3.5, 4.0

References

• http://article.gmane.org/gmane.linux.nfs/26592
• http://bugzilla.linux-nfs.org/show_bug.cgi?id=131
• http://linux-nfs.org/pipermail/nfsv4/2006-November/005313.html
• http://linux-nfs.org/pipermail/nfsv4/2006-November/005323.html
• http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00004.html
• http://secunia.com/advisories/35106
• http://secunia.com/advisories/35298
• http://secunia.com/advisories/35394
• http://secunia.com/advisories/35656
• http://secunia.com/advisories/35847
• http://secunia.com/advisories/36051

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