{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "22e8bd51bb0469d1a524130a057f894ff632376a"
            },
            {
              "fixed": "14995c4250f04b58bf6fc00e0e973a2e1b3cfb9b"
            },
            {
              "fixed": "2419aa74081007dc4d14ff5640659052dfdfd69a"
            },
            {
              "fixed": "34f2a2f32af570dfcc532ad70c080629ee1c32b0"
            },
            {
              "fixed": "b1a61366933224b3ad80975c4d01ac2cc6931ecf"
            },
            {
              "fixed": "a6c4250b81bd30beae94e1b7a4b26fa1193ad2e4"
            }
          ],
          "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": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68131.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrbd: Reset positive result codes to zero in object map update path\n\nIn a reply message to an RBD request, a positive result code indicates\na data payload, which is not allowed for writes. While\nrbd_osd_req_callback() already resets a positive result code for writes\nto zero, rbd_object_map_callback() does not. This allows a corrupted\nreply to an object map update to trigger the rbd_assert(*result \u003c 0) in\n__rbd_obj_handle_request(). This happens, because\nrbd_object_map_callback() calls rbd_obj_handle_request() -\u003e\n__rbd_obj_handle_request() and passes this positive result code. From\n__rbd_obj_handle_request(), rbd_obj_advance_write() is called, which\nleaves the positive result code unchanged and returns true. Therefore,\nthe if(done \u0026\u0026 *result) branch is executed in __rbd_obj_handle_request()\nand the assertion triggers.\n\nThis patch fixes the issue by adjusting the logic in the\nrbd_object_map_callback() path. A positive result code for an object map\nupdate is now reset to zero (similar to rbd_osd_req_callback()), and the\nmessage is subsequently handled the same way as if the result code was\nzero from the beginning. Additionally, a WARN_ON_ONCE() is added for\nthis case.",
  "id": "CVE-2026-68131",
  "modified": "2026-08-14T03:51:52.805524526Z",
  "published": "2026-08-10T11:58:54.155Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/14995c4250f04b58bf6fc00e0e973a2e1b3cfb9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2419aa74081007dc4d14ff5640659052dfdfd69a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34f2a2f32af570dfcc532ad70c080629ee1c32b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6c4250b81bd30beae94e1b7a4b26fa1193ad2e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1a61366933224b3ad80975c4d01ac2cc6931ecf"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68131.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68131"
    },
    {
      "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": "rbd: Reset positive result codes to zero in object map update path"
}