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:
#chmod 06777 /newdir/file1
$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
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.