Bug 2536399 (CVE-2026-90084)

Summary:	CVE-2026-90084 kernel: octeontx2-vf: fix workqueue and netdev race in probe/remove
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's octeontx2-vf driver. A race condition exists during the network device's probe and removal process, which can cause the system to attempt to queue work on an uninitialized workqueue. This issue can result in a system crash, leading to a denial of service.	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:

Description OSIDB Bzimport 2026-09-17 17:43:56 UTC

In the Linux kernel, the following vulnerability has been resolved:

octeontx2-vf: fix workqueue and netdev race in probe/remove

Initialize the VF workqueue before register_netdev() so ndo_set_rx_mode
does not queue work on a NULL workqueue. Unregister the netdev before
destroying the workqueue, and add proper probe error cleanup.

Comment 1 Keith Grant 2026-09-22 19:03:31 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90084.mbox