{"id":"CVE-2026-93154","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Add refcounting to user ring MRs\n\nPrevent userspace from deregistering the MRs that back QP/CQ/SRQ rings\nby bumping the MR's refcount upon association.","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Add refcounting to user ring MRs\n\nPrevent userspace from deregistering the MRs that back QP/CQ/SRQ rings\nby bumping the MR's refcount upon association.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= b48c24c2d710cf34810c555dcef883a3d35a9c08 < 07974c267f603a76aead348bca97deee95efdcc9","Linux >= b48c24c2d710cf34810c555dcef883a3d35a9c08 < a6c0e693a7c881bfa43ac74cbcad1f8e10f1382b","Linux >= b48c24c2d710cf34810c555dcef883a3d35a9c08 < f67d8a08f60c9217df6d40da56422d2049f5e334","Linux 5.14"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:18:23.060","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93154","references":[{"url":"https://git.kernel.org/stable/c/07974c267f603a76aead348bca97deee95efdcc9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a6c0e693a7c881bfa43ac74cbcad1f8e10f1382b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f67d8a08f60c9217df6d40da56422d2049f5e334","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00161,"epssPercentile":0.05769,"ingestedAt":"2026-09-17T16:21:47.740Z","slug":"CVE-2026-93154","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Add refcounting to user ring MRs\n\nPrevent userspace from deregistering the MRs that back QP/CQ/SRQ rings\nby bumping the MR's refcount upon association.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207401,"id":"CVE-2026-93154","ts":1789757344123,"field":"cvss","old":null,"new":"7.8"},{"seq":207400,"id":"CVE-2026-93154","ts":1789757344123,"field":"severity","old":"none","new":"high"}]}