CVE-2026-97529 (GCVE-0-2026-97529)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:21 – Updated: 2026-10-21 12:53
VLAI
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().
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 , < 5f33efe04658968b6b3f432f904d5f1f74c12286 (git)
Affected: 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 , < ef63922d8bdea03de1804af39a6b12212acb1be2 (git)
Affected: 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 , < 740f3458a4798af54aaf8cf63e797d407e8b6d3b (git)
Affected: 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 , < f75bff451a2fac5aed82f9641df1e9a42c5a899d (git)
Affected: 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 , < 4cf38dd9465736141263ebb63375868311a0ec81 (git)
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Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]\n\nThe FC BSG transport allocates job-\u003erequest via memdup_user() using the\nexact user-supplied request_len. For FC_BSG_HST_VENDOR,\nfc_bsg_host_dispatch() only guarantees request_len covers msgcode and\nvendor_id; it does not account for the vendor_cmd[] flexible array.\n\nqla2xxx then reads the command selector vendor_cmd[0] and, in several\nsub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor\ncommand area without verifying request_len. A caller holding\nCAP_SYS_RAWIO can submit a short request whose vendor_id matches the\nhost, triggering out-of-bounds heap reads (KASAN-detectable, and able to\nmis-select a command or panic).\n\nAdd a central guard in qla2x00_process_vendor_specific() so the selector\nis always in bounds, restrict the early vendor_cmd[0] read in\nqla24xx_bsg_request() to sufficiently long vendor messages, and add\nrequest_len checks to the sub-handlers that read further:\nqla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(),\nqla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(),\nqla2x00_update_optrom(), qlafx00_mgmt_cmd() and\nqla28xx_validate_flash_image()."
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        "dateUpdated": "2026-10-21T12:53:04.993Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/4cf38dd9465736141263ebb63375868311a0ec81"
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    "dateReserved": "2026-09-24T16:01:01.153Z",
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      "title": "scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]\n\nThe FC BSG transport allocates job-\u003erequest via memdup_user() using the\nexact user-supplied request_len. For FC_BSG_HST_VENDOR,\nfc_bsg_host_dispatch() only guarantees request_len covers msgcode and\nvendor_id; it does not account for the vendor_cmd[] flexible array.\n\nqla2xxx then reads the command selector vendor_cmd[0] and, in several\nsub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor\ncommand area without verifying request_len. A caller holding\nCAP_SYS_RAWIO can submit a short request whose vendor_id matches the\nhost, triggering out-of-bounds heap reads (KASAN-detectable, and able to\nmis-select a command or panic).\n\nAdd a central guard in qla2x00_process_vendor_specific() so the selector\nis always in bounds, restrict the early vendor_cmd[0] read in\nqla24xx_bsg_request() to sufficiently long vendor messages, and add\nrequest_len checks to the sub-handlers that read further:\nqla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(),\nqla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(),\nqla2x00_update_optrom(), qlafx00_mgmt_cmd() and\nqla28xx_validate_flash_image()."
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}



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