{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4949314c7283ea4f9ade182ca599583b89f7edd6"
            },
            {
              "fixed": "7d56f5c868d92c9d504a34a3ea450bce481c7f63"
            },
            {
              "fixed": "59a2a5a37dc49a641ad6bc64aee34e5a61025ffd"
            },
            {
              "fixed": "9f8076cc73dfa6b10155978c160587e986b22169"
            },
            {
              "fixed": "a040004846f1fbe687f6ec76d9ccc27b4ead42e4"
            },
            {
              "fixed": "05b3e37433cf2eaf8867f1c16528aa347bb212ab"
            },
            {
              "fixed": "cb7bdae7fba404852ade34b0c1445fbaf3e54fbb"
            },
            {
              "fixed": "ef2ee18fec92088c7d8877baf7674e89389ccd66"
            },
            {
              "fixed": "fda6a1f3c3d7047b5ce5654487649c2daa738bfc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "d2227f84ba0e97906153ac83db13213fb2e3938d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "3.2.9"
            },
            {
              "fixed": "3.3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.3.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "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/2026/72xxx/CVE-2026-72083.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE\n\ncore_scsi3_emulate_pro_register_and_move() maps the PERSISTENT RESERVE OUT\nparameter list with transport_kmap_data_sg() and parses the destination\nTransportID with target_parse_pr_out_transport_id(). For an iSCSI\nTransportID (FORMAT CODE 01b), iscsi_parse_pr_out_transport_id() returns\nthe ISID in iport_ptr as a raw pointer into that mapped buffer.\n\nThe function then unmaps the buffer with transport_kunmap_data_sg() before\ndereferencing iport_ptr in strcmp(), __core_scsi3_locate_pr_reg() and\ncore_scsi3_alloc_registration(). When the parameter list spans more than\none page (PARAMETER LIST LENGTH \u003e 4096), transport_kmap_data_sg() uses\nvmap() and transport_kunmap_data_sg() does vunmap(), so the kernel virtual\naddress backing iport_ptr is torn down and every subsequent dereference is\na use-after-free read of the unmapped region.\n\nKeep the parameter list mapped until iport_ptr is no longer needed: drop\nthe early transport_kunmap_data_sg() and unmap once on the success path,\nright before returning. The error paths already unmap through the existing\n\"if (buf) transport_kunmap_data_sg(cmd)\" at the out: label, which now runs\non every post-map error exit because buf is no longer cleared early. Only\nreads of the mapping happen while spinlocks are held; the map and unmap\ncalls remain outside any lock. The sibling caller\ncore_scsi3_decode_spec_i_port() already uses the buffer before unmapping it\nand is left unchanged.",
  "id": "CVE-2026-72083",
  "modified": "2026-08-18T03:31:06.234238044Z",
  "published": "2026-08-15T05:52:32.045Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05b3e37433cf2eaf8867f1c16528aa347bb212ab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59a2a5a37dc49a641ad6bc64aee34e5a61025ffd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d56f5c868d92c9d504a34a3ea450bce481c7f63"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f8076cc73dfa6b10155978c160587e986b22169"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a040004846f1fbe687f6ec76d9ccc27b4ead42e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb7bdae7fba404852ade34b0c1445fbaf3e54fbb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef2ee18fec92088c7d8877baf7674e89389ccd66"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fda6a1f3c3d7047b5ce5654487649c2daa738bfc"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72083.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72083"
    },
    {
      "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:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE"
}