FKIE_CVE-2026-97535

Vulnerability from fkie_nvd - Published: 2026-09-25 11:17 - Updated: 2026-09-25 11:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound VP index against VP_CTRL IOCB bitmap size The VP control IOCB selects its target virtual port by setting one bit in vp_idx_map, a fixed 16-byte (128-bit) array in both vp_ctrl_entry_24xx and vp_ctrl_entry_24xx_ext. qla25xx_ctrlvp_iocb() computes map = (vp_index - 1) / 8 and writes vce->vp_idx_map[map] without checking that map stays within the array. max_npiv_vports is taken from firmware and only sanitized to a MIN_MULTI_ID_FABRIC-aligned boundary, so it can legitimately be 191 or 255, and qla24xx_control_vp() only rejects vp_index >= max_npiv_vports. A vp_index above 128 therefore yields map >= 16 and an out-of-bounds write of up to 16 bytes past vp_idx_map, corrupting the trailing IOCB fields (or the adjacent request-ring slot on the 64-byte layout). Reject a vp_index that cannot be represented in the IOCB bitmap in qla24xx_control_vp(), and add a defensive ARRAY_SIZE() guard in qla25xx_ctrlvp_iocb() before the write. Adapters that report the usual 63 or 127 NPIV vports are unaffected.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/13354ad251ab009102597a791bc7c4d2265229e1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/48a44e19746eaa70320a3c2571dcb345192fca72
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/878613ecb5a36db26859c4fd83daf9283a334fa2
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_iocb.c",
            "drivers/scsi/qla2xxx/qla_mid.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "48a44e19746eaa70320a3c2571dcb345192fca72",
              "status": "affected",
              "version": "2853192e154b813fe34a6cbee5e34dfef50d29d0",
              "versionType": "git"
            },
            {
              "lessThan": "13354ad251ab009102597a791bc7c4d2265229e1",
              "status": "affected",
              "version": "2853192e154b813fe34a6cbee5e34dfef50d29d0",
              "versionType": "git"
            },
            {
              "lessThan": "878613ecb5a36db26859c4fd83daf9283a334fa2",
              "status": "affected",
              "version": "2853192e154b813fe34a6cbee5e34dfef50d29d0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_iocb.c",
            "drivers/scsi/qla2xxx/qla_mid.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.16"
            },
            {
              "lessThan": "4.16",
              "status": "unaffected",
              "version": "0",
              "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-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Bound VP index against VP_CTRL IOCB bitmap size\n\nThe VP control IOCB selects its target virtual port by setting one bit\nin vp_idx_map, a fixed 16-byte (128-bit) array in both\nvp_ctrl_entry_24xx and vp_ctrl_entry_24xx_ext. qla25xx_ctrlvp_iocb()\ncomputes map = (vp_index - 1) / 8 and writes vce-\u003evp_idx_map[map]\nwithout checking that map stays within the array.\n\nmax_npiv_vports is taken from firmware and only sanitized to a\nMIN_MULTI_ID_FABRIC-aligned boundary, so it can legitimately be 191 or\n255, and qla24xx_control_vp() only rejects vp_index \u003e= max_npiv_vports.\nA vp_index above 128 therefore yields map \u003e= 16 and an out-of-bounds\nwrite of up to 16 bytes past vp_idx_map, corrupting the trailing IOCB\nfields (or the adjacent request-ring slot on the 64-byte layout).\n\nReject a vp_index that cannot be represented in the IOCB bitmap in\nqla24xx_control_vp(), and add a defensive ARRAY_SIZE() guard in\nqla25xx_ctrlvp_iocb() before the write. Adapters that report the usual\n63 or 127 NPIV vports are unaffected."
    }
  ],
  "id": "CVE-2026-97535",
  "lastModified": "2026-09-25T11:17:03.757",
  "metrics": {},
  "published": "2026-09-25T11:17:03.757",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/13354ad251ab009102597a791bc7c4d2265229e1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/48a44e19746eaa70320a3c2571dcb345192fca72"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/878613ecb5a36db26859c4fd83daf9283a334fa2"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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