Bug 2552422 - CVE-2026-86562 grout: dpdk: Control-queue descriptor double-fetch overflows host heap in DPDK vhost (VDUSE) [fedora-all]
Summary: CVE-2026-86562 grout: dpdk: Control-queue descriptor double-fetch overflows h...
Keywords:
Status: ON_QA
Alias: None
Product: Fedora
Classification: Fedora
Component: grout
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Robin Jarry
QA Contact:
URL:
Whiteboard: {"flaws": ["b82e3ddd-1e4d-4f5e-991f-4...
Depends On:
Blocks: CVE-2026-86562
TreeView+ depends on / blocked
 
Reported: 2026-10-14 15:46 UTC by Ganesh
Modified: 2026-10-16 21:30 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Ganesh 2026-10-14 15:46:57 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. A control-queue descriptor double-fetch in virtio_net_ctrl_pop() overflows the host heap in the VDUSE path. An incomplete fix in commit 6ec1778134 (January 2026) bounded descriptor indices but did not snapshot lengths.
Comment 1 Fedora Update System 2026-10-15 11:21:51 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 21:30:39 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.
Note You need to log in before you can comment on or make changes to this bug.