Bug 2552442

Summary:	CVE-2026-86847 grout: dpdk: Guest can trigger infinite loop in vhost-crypto writeback chain cleanup [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Ganesh <gnaik>
Component:	grout	Assignee:	Robin Jarry <rjarry>
Status:	ON_QA ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	mruprich, rjarry
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["df5ab67b-4970-4fd3-8e37-d374a24d9482"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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:
Bug Blocks:	2529847

Description Ganesh 2026-10-14 16:03:12 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw was found in DPDK lib/vhost vhost-crypto. prepare_write_back_data() can fail after allocating a write-back node and before setting next to NULL. free_wb_data() then recurses on an uninitialized next pointer, which can hang or crash the host vhost-crypto process.

Comment 1 Fedora Update System 2026-10-15 11:22:19 UTC

FEDORA-2026-804a8c08e3 (grout-0.19.3-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-804a8c08e3

Comment 2 Fedora Update System 2026-10-16 21:31:01 UTC

FEDORA-2026-804a8c08e3 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-804a8c08e3`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-804a8c08e3

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.