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the product is no longer active in Red Hat Bugzilla.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.
As reported by covscan:
In src/netlink_delinearize.c, netlink_parse_ct_stmt() may assign NULL to 'expr', which is then passed as paramter to expr_set_type() which unconditionally dereferences it.
Hello Phil,
can this covscan revealed issue be merged with bug 1360240? It does not make much sense to me to have two reports for covscan issues fixed separately.
Hi Tomas,
(In reply to Tomas Dolezal from comment #1)
> Hello Phil,
> can this covscan revealed issue be merged with bug 1360240? It does not make
> much sense to me to have two reports for covscan issues fixed separately.
I have created multiple tickets for covscan reported issues. My motivation behind this is since they are unrelated problems, they require separate fixes. In addition to that, I am not overly sure each of them is really valid, so some of the fixes might be rejected upstream.
Of course all this can be handled from a single ticket as well, but unless this leads to inconvenience for QA I would rather keep them separate.
Thanks, Phil
The following fix from upstream should be backported:
commit d975ab412c33ddce2c39e0e86f87085d13b1aeca
Author: Pablo Neira Ayuso <pablo>
Date: Mon Sep 5 18:52:43 2016 +0200
netlink_delinearize: Avoid potential null pointer deref
Phil Sutter says:
As netlink_get_register() may return NULL, we must not pass the returned
data unchecked to expr_set_type() as that will dereference it. Since the
parser has failed at that point anyway, by returning early we can skip
the useless statement allocation that follows in
netlink_parse_ct_stmt().
Signed-off-by: Pablo Neira Ayuso <pablo>
Acked-by: Phil Sutter <phil>
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2017:2047