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scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[] The FC BSG transport allocates job->request via memdup_user() using the exact user-supplied request_len. For FC_BSG_HST_VENDOR, fc_bsg_host_dispatch() only guarantees request_len covers msgcode and vendor_id; it does not account for the vendor_cmd[] flexible array. qla2xxx then reads the command selector vendor_cmd[0] and, in several sub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor command area without verifying request_len. A caller holding CAP_SYS_RAWIO can submit a short request whose vendor_id matches the host, triggering out-of-bounds heap reads (KASAN-detectable, and able to mis-select a command or panic). Add a central guard in qla2x00_process_vendor_specific() so the selector is always in bounds, restrict the early vendor_cmd[0] read in qla24xx_bsg_request() to sufficiently long vendor messages, and add request_len checks to the sub-handlers that read further: qla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(), qla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(), qla2x00_update_optrom(), qlafx00_mgmt_cmd() and qla28xx_validate_flash_image().

Products
Kernel
Affected versions
Not specified
Fixed versions
5.10.273, 5.15.224, 6.1.191, 6.12.112, 6.18.53, 6.6.160, 7.2.7
CVEs
CVE-2026-97529
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 04:27 UTC · Revision 1

Source evidence

scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]

core-osv · Original source

Published 25 Sept 2026, 10:21 UTC

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[] The FC BSG transport allocates job->request via memdup_user() using the exact user-supplied request_len. For FC_BSG_HST_VENDOR, fc_bsg_host_dispatch() only guarantees request_len covers msgcode and vendor_id; it does not account for the vendor_cmd[] flexible array. qla2xxx then reads the command selector vendor_cmd[0] and, in several sub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor command area without verifying request_len. A caller holding CAP_SYS_RAWIO can submit a short request whose vendor_id matches the host, triggering out-of-bounds heap reads (KASAN-detectable, and able to mis-select a command or panic). Add a central guard in qla2x00_process_vendor_specific() so the selector is always in bounds, restrict the early vendor_cmd[0] read in qla24xx_bsg_request() to sufficiently long vendor messages, and add request_len checks to the sub-handlers that read further: qla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(), qla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(), qla2x00_update_optrom(), qlafx00_mgmt_cmd() and qla28xx_validate_flash_image().

osv:CVE-2026-97529

Kernel

Fixed versions: 5.10.273, 5.15.224, 6.1.191, 6.6.160, 6.12.112, 6.18.53, 7.2.7

Complete source record
{
  "id": "c9edc48271538d032957efef98cd83beb60c9c3968267afd289014d4b7a50aa1",
  "url": "https://osv.dev/vulnerability/CVE-2026-97529",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[] The FC BSG transport allocates job->request via memdup_user() using the exact user-supplied request_len. For FC_BSG_HST_VENDOR, fc_bsg_host_dispatch() only guarantees request_len covers msgcode and vendor_id; it does not account for the vendor_cmd[] flexible array. qla2xxx then reads the command selector vendor_cmd[0] and, in several sub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor command area without verifying request_len. A caller holding CAP_SYS_RAWIO can submit a short request whose vendor_id matches the host, triggering out-of-bounds heap reads (KASAN-detectable, and able to mis-select a command or panic). Add a central guard in qla2x00_process_vendor_specific() so the selector is always in bounds, restrict the early vendor_cmd[0] read in qla24xx_bsg_request() to sufficiently long vendor messages, and add request_len checks to the sub-handlers that read further: qla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(), qla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(), qla2x00_update_optrom(), qlafx00_mgmt_cmd() and qla28xx_validate_flash_image().",
    "evidence": "osv:CVE-2026-97529",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.273",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.224",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.191",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.160",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.112",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.53",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-97529",
      "aliases": [
        "CVE-2026-97529"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "01e0e15c8b3b32e006e5cccac10c8b377ac3d803"
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                {
                  "fixed": "a0c6842ec825a91693626dbd9a4c54f2b9dc15ea"
                },
                {
                  "fixed": "0540676f5fefdff748b8d57a927b143e31dc21fd"
                },
                {
                  "fixed": "d3762cc777544a4cbc4635a787e1cfc021e1a615"
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                {
                  "fixed": "5f33efe04658968b6b3f432f904d5f1f74c12286"
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                {
                  "fixed": "ef63922d8bdea03de1804af39a6b12212acb1be2"
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                {
                  "fixed": "740f3458a4798af54aaf8cf63e797d407e8b6d3b"
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                {
                  "fixed": "f75bff451a2fac5aed82f9641df1e9a42c5a899d"
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                {
                  "fixed": "4cf38dd9465736141263ebb63375868311a0ec81"
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              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97529.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.10.0"
                },
                {
                  "fixed": "5.10.273"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.224"
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              ]
            },
            {
              "type": "ECOSYSTEM",
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                  "introduced": "5.16.0"
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                  "introduced": "6.2.0"
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            {
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              "events": [
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                  "introduced": "6.7.0"
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                {
                  "fixed": "6.12.112"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.53"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97529.json"
          }
        }
      ],
      "modified": "2026-11-01T02:30:17.621915498Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0540676f5fefdff748b8d57a927b143e31dc21fd",
        "https://git.kernel.org/stable/c/4cf38dd9465736141263ebb63375868311a0ec81",
        "https://git.kernel.org/stable/c/5f33efe04658968b6b3f432f904d5f1f74c12286",
        "https://git.kernel.org/stable/c/740f3458a4798af54aaf8cf63e797d407e8b6d3b",
        "https://git.kernel.org/stable/c/a0c6842ec825a91693626dbd9a4c54f2b9dc15ea",
        "https://git.kernel.org/stable/c/d3762cc777544a4cbc4635a787e1cfc021e1a615",
        "https://git.kernel.org/stable/c/ef63922d8bdea03de1804af39a6b12212acb1be2",
        "https://git.kernel.org/stable/c/f75bff451a2fac5aed82f9641df1e9a42c5a899d",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97529.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-97529",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97529.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-97529",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518128,
  "published_at": "2026-09-25T10:21:30.733+00:00"
}