{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "43d781b9fa562f0c6e50f62c870fbfeb9dc85213"
            },
            {
              "fixed": "a804b162f9bc2b38b2ed1b4752eea9faadb1645b"
            },
            {
              "fixed": "91f8a17a22ab615a03743120e19935e731f28fb9"
            },
            {
              "fixed": "76f2cb4f721815c3b6262a6dc2151de88646924c"
            },
            {
              "fixed": "b8dcca427096fc9c50f1b376847fea72bc842d31"
            },
            {
              "fixed": "9abea37942534eeb049335476178696b654b000c"
            },
            {
              "fixed": "43403fe45379c64fa6276e5a8ede44493e5d2d3d"
            },
            {
              "fixed": "29dc2f8e1c97372c2871a70088707933515fbd5b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "7ac277a01f9017fcde4f3f81670c995992945433"
            },
            {
              "last_affected": "093f87dda065e0f618dd577985eccbe85efb9b54"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.8.17"
            },
            {
              "fixed": "5.9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.9.2"
            },
            {
              "fixed": "5.10"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.10.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92508.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in ib_free_cq()\n\nWhen accessing a CQ via the netlink path the only synchronization\nmechanism for the said CQ is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\nib_free_cq(), which is too late, since by that point\nvendor-specific resources associated with the CQ might already be\nfreed. This can leave a short window where the CQ remains accessible\nthrough restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_del() call to be before the freeing\nof the vendor-specific resources ensuring that the CQ is removed from\nrestrack before its internal resources are released.\nThis guarantees that no new users hold references to a CQ that is in\nthe process of destruction.",
  "id": "CVE-2026-92508",
  "modified": "2026-09-19T03:30:51.459913508Z",
  "published": "2026-09-17T16:10:19.443Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29dc2f8e1c97372c2871a70088707933515fbd5b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43403fe45379c64fa6276e5a8ede44493e5d2d3d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/76f2cb4f721815c3b6262a6dc2151de88646924c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91f8a17a22ab615a03743120e19935e731f28fb9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9abea37942534eeb049335476178696b654b000c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a804b162f9bc2b38b2ed1b4752eea9faadb1645b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8dcca427096fc9c50f1b376847fea72bc842d31"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92508.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-92508"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "RDMA/core: Fix potential use after free in ib_free_cq()"
}