Bug 2536355 (CVE-2026-93154) - CVE-2026-93154 kernel: RDMA/irdma: Add refcounting to user ring MRs
Summary: CVE-2026-93154 kernel: RDMA/irdma: Add refcounting to user ring MRs
Keywords:
Status: NEW
Alias: CVE-2026-93154
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-17 17:33 UTC by OSIDB Bzimport
Modified: 2026-10-20 11:45 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-17 17:33:03 UTC 
In the Linux kernel, the following vulnerability has been resolved:

RDMA/irdma: Add refcounting to user ring MRs

Prevent userspace from deregistering the MRs that back QP/CQ/SRQ rings
by bumping the MR's refcount upon association.
Comment 1 gkamathe 2026-09-18 21:28:55 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93154.mbox
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