{"id":"CVE-2026-93154","summary":"RDMA/irdma: Add refcounting to user ring MRs","details":"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.","modified":"2026-09-19T03:47:26.964501366Z","published":"2026-09-17T16:11:50.107Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93154.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/07974c267f603a76aead348bca97deee95efdcc9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6c0e693a7c881bfa43ac74cbcad1f8e10f1382b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f67d8a08f60c9217df6d40da56422d2049f5e334"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93154.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93154"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b48c24c2d710cf34810c555dcef883a3d35a9c08"},{"fixed":"07974c267f603a76aead348bca97deee95efdcc9"},{"fixed":"a6c0e693a7c881bfa43ac74cbcad1f8e10f1382b"},{"fixed":"f67d8a08f60c9217df6d40da56422d2049f5e334"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93154.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.14.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93154.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}