Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Created attachment 573106[details]
Implement console erase
There was a discussion (bug #681600) how to disable access to text printed before locking session while session is locked to prevent from leaking sensitive data.
Attached patch implements optional console erase by adding -e or --erase option to vlock command.
In addition, the scroll-back buffer is erased if underlying kernel supports it. The support exist in Linux since 3.0 and has been back-ported into RHEL-6 kernel too.
Making this feature default can be subject of further discussion.
Comment 2RHEL Program Management
2012-07-10 08:27:46 UTC
This request was not resolved in time for the current release.
Red Hat invites you to ask your support representative to
propose this request, if still desired, for consideration in
the next release of Red Hat Enterprise Linux.
This request was erroneously removed from consideration in
Red Hat Enterprise Linux 6.4, which is currently under
development. This request will be evaluated for inclusion
in Red Hat Enterprise Linux 6.4.
I spotted a typo:
--- a/help.c
+++ b/help.c
@@ -26,6 +26,8 @@ void print_help(int exitcode) {
" switch to other virtual consoles.\n"
"-a or --all: lock all virtual consoles by preventing other users\n"
" from switching virtual consoles.\n"
+ "-e or --erase: erase current virtual console content\n"
+ " from switching virtual consoles.\n"
"-v or --version: Print the version number of vlock and exit.\n"
"-h or --help: Print this help message and exit.\n"
);
The second line should not be added. Something like this:
--- a/help.c
+++ b/help.c
@@ -26,6 +26,7 @@ void print_help(int exitcode) {
" switch to other virtual consoles.\n"
"-a or --all: lock all virtual consoles by preventing other users\n"
" from switching virtual consoles.\n"
+ "-e or --erase: erase current virtual console content\n"
"-v or --version: Print the version number of vlock and exit.\n"
"-h or --help: Print this help message and exit.\n"
);
Applied to f18 (=RHEL7) and f19.
I have doubts we will see a special RHEL6.x errata for vlock. Maybe we can close this report.
Comment 6RHEL Program Management
2013-10-14 00:45:00 UTC
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated
in the current release, Red Hat is unable to address this
request at this time.
Red Hat invites you to ask your support representative to
propose this request, if appropriate, in the next release of
Red Hat Enterprise Linux.