CVE-2009-1630

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 Platforms

Weakness Type

CWE-264

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