CVE-2010-0727 Information

Description

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.

Reference

http://lkml.org/lkml/2010/3/11/269 http://secunia.com/advisories/39830 http://securitytracker.com/id?1023809 http://www.debian.org/security/2010/dsa-2053 http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.34-rc1-next-20100312.bz2 http://www.mandriva.com/security/advisories?name=MDVSA-2010:066 http://www.openwall.com/lists/oss-security/2010/03/12/1 http://www.redhat.com/support/errata/RHSA-2010-0330.html http://www.redhat.com/support/errata/RHSA-2010-0380.html http://www.redhat.com/support/errata/RHSA-2010-0521.html https://bugzilla.redhat.com/show_bug.cgi?id=570863 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A11392