{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ec3eead217181d7360a11317a888ceb30807867c"
            },
            {
              "fixed": "5fe4731bfbd8d83c4a14b4af3a27329969ce8a99"
            },
            {
              "fixed": "8f6976d635d190e3d7af7103daaa581cf1ccc12e"
            },
            {
              "fixed": "9eeafcda1d6c11f0eec532243c4e96ec8c632bd7"
            },
            {
              "fixed": "5a21e5114cec4cd3f8a2843d4c46bc49634d6e96"
            },
            {
              "fixed": "2f17ca7ab5269ac2504e1039c3921373dccd7712"
            },
            {
              "fixed": "a2e37d1ab773be3cd26b1c19593ca2dbcece9c57"
            },
            {
              "fixed": "a64e2beb450179a5d43034af8d5476a11eac1486"
            },
            {
              "fixed": "fdfb5cea4bf070cdb31d997efd87bb684df041fd"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.5.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "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/2026/90xxx/CVE-2026-90415.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cxgb4: free STAG index when TPT entry write fails\n\nwrite_tpt_entry() allocates a new STAG index with c4iw_get_resource() and\nbumps stats.stag.cur before programming the entry.  When\nwrite_adapter_mem() fails, it returns the error without releasing the index\nor reversing the statistic.  No MR is inserted into rhp-\u003emrs, so\nderegistration never reclaims it, leaking the index until device teardown.\n\nRecord whether this call allocated the index and, on a failed write, return\nit to tpt_table and decrement stats.stag.cur.  Key the rollback on both the\nwrite error and that flag, not the error alone: a non-reset update carries\na caller-owned STAG that this call did not allocate and must not free.",
  "id": "CVE-2026-90415",
  "modified": "2026-09-19T03:30:58.591483375Z",
  "published": "2026-09-17T16:09:40.714Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f17ca7ab5269ac2504e1039c3921373dccd7712"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a21e5114cec4cd3f8a2843d4c46bc49634d6e96"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fe4731bfbd8d83c4a14b4af3a27329969ce8a99"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f6976d635d190e3d7af7103daaa581cf1ccc12e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9eeafcda1d6c11f0eec532243c4e96ec8c632bd7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2e37d1ab773be3cd26b1c19593ca2dbcece9c57"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a64e2beb450179a5d43034af8d5476a11eac1486"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fdfb5cea4bf070cdb31d997efd87bb684df041fd"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90415.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90415"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "RDMA/cxgb4: free STAG index when TPT entry write fails"
}