Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.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.

Bug 1734058

Summary:	libreswan false positive on duplicate acquires leads to ignored IKE requests and packet loss
Product:	Red Hat Enterprise Linux 8	Reporter:	Paul Wouters <pwouters>
Component:	libreswan	Assignee:	Paul Wouters <pwouters>
Status:	CLOSED ERRATA	QA Contact:	Ondrej Moriš <omoris>
Severity:	unspecified	Docs Contact:
Priority:	high
Version:	8.2	CC:	dapospis, pvrabec, sbroz, tjaros, wchadwic
Target Milestone:	rc	Keywords:	Triaged
Target Release:	8.0	Flags:	pwouters: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:
Clones:	1734060 1822580 (view as bug list)		Environment:
Last Closed:	2020-11-04 03:18:00 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1820206
Bug Blocks:	1734060, 1755139, 1822580, 1825061

Description Paul Wouters 2019-07-29 14:32:10 UTC

There are some (as of yet unknown) scenario's where pluto receives a kernel ACQUIRE for which it already detects it has a valid STATE object. Thus, it interprets these as a "duplicate acquire" and no action is taken. However, the state found does not belong to a valid IPsec SA, and so the tunnel is down and cannot be started because it is deemed up based on the "duplicate" check.

When this happens, packets are dropped for a lack of IPsec SA - or leaked in the clear, depending on whether this was a "private" or "private-or-clear" group state.

Comment 25 errata-xmlrpc 2020-11-04 03:18:00 UTC

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 (libreswan bug fix and enhancement update), 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/RHEA-2020:4722