Red Hat Bugzilla – Bug 525398
RHEL4: Unable to write to file as non-root user with setuid and setgid bit set
Last modified: 2015-01-04 17:59:09 EST
From Sathisha Poojary: I was working with RHEL 5 update 3 and noticed a minor inconvenience which was a side effect of the RHEL5.3 patch BZ#463687 [kernel: open() call allows setgid bit when user is not in new file's group]. Steps to reproduce the issue: #mkdir /newdir #touch /newdir/file1 #chmod 06777 /newdir/file1 #su newuser $dd if=/dev/null of=/newdr/file1 dd: opening '/newdir/file1': Operation not permitted However the dd works with 'conv=notrunc' option.
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
Committed in 89.44.EL . RPMS are available at http://people.redhat.com/vgoyal/rhel4/
Reproduced in 89.43.EL and verified in 89.44.EL.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2011-0263.html