CVE-2026-89861 (GCVE-0-2026-89861)
Vulnerability from cvelistv5
Published
2026-09-16 10:31
Modified
2026-10-19 08:53
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition() In the format 1 path, the virtual port is located on ha->vp_list while holding vport_slock, but the lock is dropped before vp is used: qla_update_host_map() is called and VP_IDX_ACQUIRED/REGISTER_FC4_NEEDED/ REGISTER_FDMI_NEEDED are set on vp. No reference is taken across that window, so a concurrent qla24xx_deallocate_vp_id() can tear the vport down and free it, leading to a use-after-free. Take a vport reference (vref_count) under vport_slock when the matching vp is found, and drop it after the last use of vp. qla24xx_deallocate_vp_id() waits for vref_count to reach zero before unlinking and freeing the vport, so the pointer stays valid. This matches the reference idiom already used by the other ha->vp_list traversals.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136
Version: 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136
Version: 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136
Version: 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136
Version: 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136
Version: 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136
Version: 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136
Version: 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_mbx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d09ef32af1e05d79f29b460521a20bc4e6fd2ecf",
              "status": "affected",
              "version": "2c3dfe3f6ad8daff5acdb01713e4f2b116e78136",
              "versionType": "git"
            },
            {
              "lessThan": "4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69",
              "status": "affected",
              "version": "2c3dfe3f6ad8daff5acdb01713e4f2b116e78136",
              "versionType": "git"
            },
            {
              "lessThan": "267533b28ddf2c9223d30ad7e6960fa9e936428e",
              "status": "affected",
              "version": "2c3dfe3f6ad8daff5acdb01713e4f2b116e78136",
              "versionType": "git"
            },
            {
              "lessThan": "f8d2eb510c063a8ca79a5dc766a4303d3925fe83",
              "status": "affected",
              "version": "2c3dfe3f6ad8daff5acdb01713e4f2b116e78136",
              "versionType": "git"
            },
            {
              "lessThan": "f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297",
              "status": "affected",
              "version": "2c3dfe3f6ad8daff5acdb01713e4f2b116e78136",
              "versionType": "git"
            },
            {
              "lessThan": "47272152a13d202d98496208f9bf382c1cf4d4fb",
              "status": "affected",
              "version": "2c3dfe3f6ad8daff5acdb01713e4f2b116e78136",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "2c3dfe3f6ad8daff5acdb01713e4f2b116e78136",
              "versionType": "git"
            },
            {
              "lessThan": "793cedee296fd819bfadc2a7ec4d52faf9c09a0a",
              "status": "affected",
              "version": "2c3dfe3f6ad8daff5acdb01713e4f2b116e78136",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_mbx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.23"
            },
            {
              "lessThan": "2.6.23",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "2.6.23",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "2.6.23",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "2.6.23",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "2.6.23",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "2.6.23",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.51",
                  "versionStartIncluding": "2.6.23",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.5",
                  "versionStartIncluding": "2.6.23",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "2.6.23",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition()\n\nIn the format 1 path, the virtual port is located on ha-\u003evp_list while\nholding vport_slock, but the lock is dropped before vp is used:\nqla_update_host_map() is called and VP_IDX_ACQUIRED/REGISTER_FC4_NEEDED/\nREGISTER_FDMI_NEEDED are set on vp. No reference is taken across that\nwindow, so a concurrent qla24xx_deallocate_vp_id() can tear the vport\ndown and free it, leading to a use-after-free.\n\nTake a vport reference (vref_count) under vport_slock when the matching\nvp is found, and drop it after the last use of\nvp. qla24xx_deallocate_vp_id() waits for vref_count to reach zero before\nunlinking and freeing the vport, so the pointer stays valid. This\nmatches the reference idiom already used by the other ha-\u003evp_list\ntraversals."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - qla24xx_report_id_acquisition() runs from qla24xx_process_response_queue() and the ATIO MSI-X path on firmware VP_RPT_ID IOCBs after fabric FDISC or VP_STAT_ID_CHG. QLogic CNAs speak FCoE and SANs are stretched via FCIP, so a remote SAN peer drives this without a local syscall, matching sibling CVE-2026-89848.\nAC:H - The use-after-free requires qla24xx_deallocate_vp_id() to unlink the vport and scsi_host_put() it after the ISR drops vport_slock, which occurs only during NPIV vport deletion or failed vport create, a victim state a fabric attacker cannot initiate.\nPR:N - Report-ID IOCBs are firmware completions of unauthenticated Fibre Channel fabric login and N_Port ID assignment. The interrupt path performs no Linux credential or capability check, so a fabric peer needs no account on the victim host.\nUI:N - VP_RPT_ID handling runs automatically from the HBA interrupt and qla_do_work paths when the fabric assigns or changes an NPIV port ID. Concurrent vport teardown occurs during routine NPIV delete or driver remove, without a mount, open, or other interactive victim step.\nS:U - The use-after-free is of scsi_qla_host inside the host kernel qla2xxx driver and does not cross a VM, IOMMU, or other separate security-authority boundary.\nC:H - After scsi_host_put() frees the vport, the ISR still calls qla_update_host_map() and set_bit() on the dangling scsi_qla_host. That kernel heap use-after-free enables disclosure of reused object contents.\nI:H - qla_update_host_map() writes the freed vport\u0027s d_id and inserts the dangling vha pointer into ha-\u003ehost_map, and set_bit() writes vp_flags/dpc_flags on the freed object, yielding a kernel write and control-flow hijack primitive.\nA:H - Use-after-free of scsi_qla_host from interrupt or qla_do_work context produces a kernel oops or panic even when not fully exploited, taking down storage served by the adapter."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:53:53.884Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d09ef32af1e05d79f29b460521a20bc4e6fd2ecf"
        },
        {
          "url": "https://git.kernel.org/stable/c/4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69"
        },
        {
          "url": "https://git.kernel.org/stable/c/267533b28ddf2c9223d30ad7e6960fa9e936428e"
        },
        {
          "url": "https://git.kernel.org/stable/c/f8d2eb510c063a8ca79a5dc766a4303d3925fe83"
        },
        {
          "url": "https://git.kernel.org/stable/c/f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297"
        },
        {
          "url": "https://git.kernel.org/stable/c/47272152a13d202d98496208f9bf382c1cf4d4fb"
        },
        {
          "url": "https://git.kernel.org/stable/c/d556f899964d184e6cb788f3fa9dcddcafe1ab2d"
        },
        {
          "url": "https://git.kernel.org/stable/c/793cedee296fd819bfadc2a7ec4d52faf9c09a0a"
        }
      ],
      "title": "scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89861",
    "datePublished": "2026-09-16T10:31:32.987Z",
    "dateReserved": "2026-09-11T19:38:34.771Z",
    "dateUpdated": "2026-10-19T08:53:53.884Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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