Bug 2461498 (CVE-2026-31565)

Summary:	CVE-2026-31565 kernel: RDMA/irdma: Fix deadlock during netdev reset with active connections
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	rhel-process-autobot, 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 RDMA/irdma component. A local user can trigger a deadlock by performing a network device (netdev) reset while Remote Direct Memory Access (RDMA) applications are actively running, particularly in iWARP mode. This action creates a circular dependency during the removal of RDMA clients, causing an indefinite wait. This vulnerability can lead to a Denial of Service (DoS) condition, making the system unresponsive.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-04-24 15:05:04 UTC

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

RDMA/irdma: Fix deadlock during netdev reset with active connections

Resolve deadlock that occurs when user executes netdev reset while RDMA
applications (e.g., rping) are active. The netdev reset causes ice
driver to remove irdma auxiliary driver, triggering device_delete and
subsequent client removal. During client removal, uverbs_client waits
for QP reference count to reach zero while cma_client holds the final
reference, creating circular dependency and indefinite wait in iWARP
mode. Skip QP reference count wait during device reset to prevent
deadlock.

Comment 1 Keith Grant 2026-04-24 17:46:58 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026042400-CVE-2026-31565-932b@gregkh/T