{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1efe8c0670d6a6883faa09c9abc746c741f5664a"
            },
            {
              "fixed": "ffa85a2c197935ace6f1634ad9eb0a44bc615670"
            },
            {
              "fixed": "9619909d4869afe720904c6888a289b9ac3055b8"
            },
            {
              "fixed": "1eae35b37923cb71b0cb5136d00671440d488b9f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.16.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74396.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure\n\nmlx5r_umr_update_xlt() allocates and DMA maps an XLT buffer with\nmlx5r_umr_create_xlt(). The buffer is released by the common cleanup path\nthrough mlx5r_umr_unmap_free_xlt().\n\nAfter mlx5_odp_populate_xlt() became fallible, its error path returned\ndirectly and skipped that cleanup. This leaks the XLT DMA mapping and\nbuffer. If the emergency XLT page was used, it also leaves\nxlt_emergency_page_mutex locked.\n\nBreak out of the loop so execution falls through the existing cleanup path.",
  "id": "CVE-2026-74396",
  "modified": "2026-08-18T03:31:25.010497810Z",
  "published": "2026-08-15T05:59:08.694Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1eae35b37923cb71b0cb5136d00671440d488b9f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9619909d4869afe720904c6888a289b9ac3055b8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ffa85a2c197935ace6f1634ad9eb0a44bc615670"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74396.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74396"
    },
    {
      "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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure"
}