CVE-2026-93154

RDMA/irdma: Add refcounting to user ring MRs

State: Published
Severity: 7.8 High
Published: Sep 17, 2026
Updated: Oct 19, 2026
Reserved: Sep 17, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	b48c24c2d710cf34810c555dcef883a3d35a9c08 to before 07974c267f603a76aead348bca97deee95efdcc9Affected b48c24c2d710cf34810c555dcef883a3d35a9c08 to before a6c0e693a7c881bfa43ac74cbcad1f8e10f1382bAffected b48c24c2d710cf34810c555dcef883a3d35a9c08 to before f67d8a08f60c9217df6d40da56422d2049f5e334Affected
LinuxLinux	5.14Affected before 5.14Not affected 6.18.52 through 6.18.Not affected 7.2.6 through 7.2.Not affected 7.3 and laterNot affected

References

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