CVE-2026-97531 (GCVE-0-2026-97531)
Vulnerability from cvelistv5
Published
2026-09-25 10:21
Modified
2026-10-21 12:53
Severity ?
7.5 (High) - CVSS:3.1/AV:A/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: Skip vport under deletion in report ID acquisition qla24xx_report_id_acquisition() format-1 handling walks ha->vp_list under vport_slock, takes a vref_count on the matching vport and calls qla_update_host_map() to register its port id. A vport teardown via qla24xx_vport_delete() sets VPORT_DELETE, then qla24xx_disable_vp() removes the vport from the host_map btree and zeroes vha->d_id (RESET_AL_PA). The vport is only unlinked from vp_list later, in qla24xx_deallocate_vp_id(), which clears vp_map[idx] (RESET_VP_IDX) but does not touch host_map. In the window in between, report ID acquisition can still find the vport on vp_list and call qla_update_host_map(); with d_id already zeroed it takes the btree_insert32() path and re-inserts the dying vport into host_map. Nothing cleans that entry afterwards, so once scsi_host_put() frees the vha a later host_map lookup dereferences freed memory. Skip a vport that has VPORT_DELETE set before taking the reference, so it is neither re-registered nor scheduled for DPC re-registration. This mirrors the existing guard in qla2x00_alert_all_vps().
References
Impacted products
Vendor Product Version
Linux Linux Version: 41dc529a4602ac737020f423f84686a81de38e6d
Version: 41dc529a4602ac737020f423f84686a81de38e6d
Version: 41dc529a4602ac737020f423f84686a81de38e6d
Version: 41dc529a4602ac737020f423f84686a81de38e6d
Version: 41dc529a4602ac737020f423f84686a81de38e6d
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_mbx.c"
          ],
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        },
        {
          "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": "4.11"
            },
            {
              "lessThan": "4.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "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": "6.6.160",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
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                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.7",
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                  "vulnerable": true
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                {
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                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Skip vport under deletion in report ID acquisition\n\nqla24xx_report_id_acquisition() format-1 handling walks ha-\u003evp_list under\nvport_slock, takes a vref_count on the matching vport and calls\nqla_update_host_map() to register its port id.\n\nA vport teardown via qla24xx_vport_delete() sets VPORT_DELETE, then\nqla24xx_disable_vp() removes the vport from the host_map btree and zeroes\nvha-\u003ed_id (RESET_AL_PA). The vport is only unlinked from vp_list later,\nin qla24xx_deallocate_vp_id(), which clears vp_map[idx] (RESET_VP_IDX)\nbut does not touch host_map. In the window in between, report ID\nacquisition can still find the vport on vp_list and call\nqla_update_host_map(); with d_id already zeroed it takes the\nbtree_insert32() path and re-inserts the dying vport into host_map.\nNothing cleans that entry afterwards, so once scsi_host_put() frees the\nvha a later host_map lookup dereferences freed memory.\n\nSkip a vport that has VPORT_DELETE set before taking the reference, so it\nis neither re-registered nor scheduled for DPC re-registration. This\nmirrors the existing guard in qla2x00_alert_all_vps()."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The patched format-1 (vp_idx != 0) path in qla24xx_report_id_acquisition() walks ha-\u003evp_list and calls qla_update_host_map() when a VP_RPT_ID_IOCB_TYPE for FDISC complete or VP_STAT_ID_CHG arrives via qla24xx_process_response_queue() from qla24xx_intr_handler/qla24xx_msix_rsp_q, or via qlt_24xx_atio_pkt_all_vps(). A Fibre Channel SAN peer or switch induces those RIDAs; native FC/FCoE is a non-routable L2 fabric, so Adjacent.\nAC:H - The stale host_map insert happens only after qla24xx_vport_delete() sets VPORT_DELETE and qla24xx_disable_vp() RESET_AL_PA zeroes d_id and drops the vport from host_map, but before qla24xx_deallocate_vp_id() unlinks it from vp_list. A fabric attacker cannot write the S_IWUSR sysfs store_fc_vport_delete attribute to start that teardown, so the window is a victim state they cannot induce.\nPR:N - VP_RPT_ID handling in qla24xx_process_response_queue() and qlt_24xx_atio_pkt_all_vps() is an unauthenticated firmware completion of fabric N_Port ID assignment; that interrupt path checks no Linux uid or capability. FC-SP/EDIF is opt-in and is not required to deliver a format-1 RIDA.\nUI:N - Format-1 RIDA is processed automatically in interrupt context when firmware reports a VP ID. Concurrent qla24xx_vport_delete() is an administrator NPIV teardown rather than a mount, open, or other interactive step the attacker solicits.\nS:U - The dangling scsi_qla_host pointer is stored in ha-\u003ehost_map and later consumed in the same host kernel by qla_find_host_by_d_id(); this does not cross a VM, IOMMU, or sandbox boundary.\nC:H - After scsi_host_put() at the end of qla24xx_vport_delete() frees the vha, a later btree_lookup32() in qla_find_host_by_d_id() on the re-inserted host_map key returns the freed scsi_qla_host. That use-after-free enables disclosure of reused heap contents.\nI:H - With d_id already zeroed, qla_update_host_map() takes btree_insert32() and plants the dying vha into ha-\u003ehost_map. Later ATIO/ELS dispatch via qla_find_host_by_d_id() writes through that freed scsi_qla_host, giving a kernel write and control-flow primitive.\nA:H - A later host_map lookup of the freed vha from qlt_24xx_atio_pkt_all_vps() (ATIO_TYPE7 d_id) or qla_edif ELS handling oopses in interrupt context, panicking the storage host even without a full exploit."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:53:07.214Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/40dcd4a71a52414b47fbba2f956387f1077c6c15"
        },
        {
          "url": "https://git.kernel.org/stable/c/20bb54601d2655e83795b73499c89f6b1cb31016"
        },
        {
          "url": "https://git.kernel.org/stable/c/d61e8de98c5a52978fb1edd95fe4dde3131b280e"
        },
        {
          "url": "https://git.kernel.org/stable/c/7a83979d92782f83c90888ebe19bdc9420521940"
        },
        {
          "url": "https://git.kernel.org/stable/c/23582731afa35031c94fadb71a4f3b4afd094649"
        }
      ],
      "title": "scsi: qla2xxx: Skip vport under deletion in report ID acquisition",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97531",
    "datePublished": "2026-09-25T10:21:31.968Z",
    "dateReserved": "2026-09-24T16:01:01.153Z",
    "dateUpdated": "2026-10-21T12:53:07.214Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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