The gfs2_lock function in the Linux kernel before
2.6.34-rc1-next-20100312, and the gfs_lock function in the Linux
kernel on Red Hat Enterprise Linux (RHEL) 5 and 6, does not properly
remove POSIX locks on files that are setgid without group-execute
permission, which allows local users to cause a denial of service (BUG
and system crash) by locking a file on a (1) GFS or (2) GFS2
filesystem, and then changing this file's permissions.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[linux-kernel] 20100311 [PATCH 3/3] GFS2: Skip check for mandatory locks when unlocking
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disclosed, or updated in CVE.
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