{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "99fa331dc8629be55ac7a0cca0dc56492070ddac"
            },
            {
              "fixed": "5eb0c57a8b568eb08f464861d84d518a2af939ac"
            },
            {
              "fixed": "d5cc211e8c39e46f357d30a092d683e84d560de9"
            },
            {
              "fixed": "2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b"
            },
            {
              "fixed": "8c013e3a8d8273da4d47bf1c27f016a3551996f5"
            },
            {
              "fixed": "64c72390d8407ea86de712a477c796b07d37abc4"
            },
            {
              "fixed": "235ef2d0e750885c29340b0fc40620a7a4f52e12"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.3.0"
            },
            {
              "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-2026-92509.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in counter_release()\n\nWhen accessing a counter via the netlink path the only synchronization\nmechanism for the said counter is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\ncounter_release(), which is too late, since by that point\nvendor-specific resources associated with the counter might already be\nfreed. This can leave a short window where the counter remains\naccessible through restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_del() call to be before the\nfreeing of the vendor-specific resources, ensuring that the counter is\nremoved from restrack before its internal resources are released.\nThis guarantees that no new users hold references to a counter that is\nin the process of destruction.",
  "id": "CVE-2026-92509",
  "modified": "2026-09-19T03:30:50.721732171Z",
  "published": "2026-09-17T16:10:20.100Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/235ef2d0e750885c29340b0fc40620a7a4f52e12"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5eb0c57a8b568eb08f464861d84d518a2af939ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64c72390d8407ea86de712a477c796b07d37abc4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c013e3a8d8273da4d47bf1c27f016a3551996f5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5cc211e8c39e46f357d30a092d683e84d560de9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92509.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-92509"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "RDMA/core: Fix potential use after free in counter_release()"
}