Bug 2482576 (CVE-2026-46117)

Summary:	CVE-2026-46117 kernel: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
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/mana component. A local user could trigger a kernel corruption by providing specific configurations through the user Application Programming Interface (uAPI) that cause an internal error. This issue arises when Work Queues (WQs) are specified to share the same Completion Queue (CQ), leading to an unstable system state.	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 2026-05-28 11:04:04 UTC

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

RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss()

Sashiko points out that the user can specify WQs sharing the same CQ as a
part of the uAPI and this will trigger the WARN_ON() then go on to corrupt
the kernel.

Just reject it outright and fail the QP creation.

Comment 1 Keith Grant 2026-05-28 18:23:50 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052814-CVE-2026-46117-a93b@gregkh/T

Comment 6 errata-xmlrpc 2026-06-22 08:29:10 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:27789 https://access.redhat.com/errata/RHSA-2026:27789

Comment 7 errata-xmlrpc 2026-06-25 22:13:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:30129 https://access.redhat.com/errata/RHSA-2026:30129

Comment 8 errata-xmlrpc 2026-07-21 06:18:25 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:42550 https://access.redhat.com/errata/RHSA-2026:42550

Comment 9 errata-xmlrpc 2026-07-21 06:31:35 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:42552 https://access.redhat.com/errata/RHSA-2026:42552

Comment 10 errata-xmlrpc 2026-09-09 00:57:43 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:65712 https://access.redhat.com/errata/RHSA-2026:65712