FKIE_CVE-2026-93242

Vulnerability from fkie_nvd - Published: 2026-09-24 16:17 - Updated: 2026-10-19 10:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb() qla24xx_process_response_queue() advances ring_ptr past the head IOCB before dispatching, so by the time __qla_consume_iocb() runs, ring_ptr already points at the first continuation IOCB. The function however looped purex->entry_count times starting at ring_ptr. As entry_count includes the head, this consumed one entry too many: it stamped RESPONSE_PROCESSED on the next, unrelated IOCB and advanced the ring past it, silently dropping a legitimate firmware response. The head IOCB's signature was also never marked. Mark the head processed and account for it, then consume only the entry_count - 1 continuation IOCBs, matching __qla_copy_purex_to_buffer().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/31715d1e1cbf3a37ce3452635c5602f73fd7abd4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ba019bdd89d931499d9476456b5d9c7ab7fa753
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6e3f129538c32d0019437197735912308c161843
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a136c311676fd1010b1bde3bcfd410caa2fa040f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bd1534d4afab47f13dfc27fff6f59dd859a0ac3a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d841707fafba5f80341b82e8c3a4c24fc5aa5132
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/df86c27cf1ba9d66f737a1fa56479c6e7efafe4e
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_isr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a136c311676fd1010b1bde3bcfd410caa2fa040f",
              "status": "affected",
              "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
              "versionType": "git"
            },
            {
              "lessThan": "d841707fafba5f80341b82e8c3a4c24fc5aa5132",
              "status": "affected",
              "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
              "versionType": "git"
            },
            {
              "lessThan": "6e3f129538c32d0019437197735912308c161843",
              "status": "affected",
              "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
              "versionType": "git"
            },
            {
              "lessThan": "bd1534d4afab47f13dfc27fff6f59dd859a0ac3a",
              "status": "affected",
              "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
              "versionType": "git"
            },
            {
              "lessThan": "31715d1e1cbf3a37ce3452635c5602f73fd7abd4",
              "status": "affected",
              "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
              "versionType": "git"
            },
            {
              "lessThan": "df86c27cf1ba9d66f737a1fa56479c6e7efafe4e",
              "status": "affected",
              "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
              "versionType": "git"
            },
            {
              "lessThan": "3ba019bdd89d931499d9476456b5d9c7ab7fa753",
              "status": "affected",
              "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_isr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()\n\nqla24xx_process_response_queue() advances ring_ptr past the head IOCB\nbefore dispatching, so by the time __qla_consume_iocb() runs, ring_ptr\nalready points at the first continuation IOCB. The function however\nlooped purex-\u003eentry_count times starting at ring_ptr. As entry_count\nincludes the head, this consumed one entry too many: it stamped\nRESPONSE_PROCESSED on the next, unrelated IOCB and advanced the ring\npast it, silently dropping a legitimate firmware response. The head\nIOCB\u0027s signature was also never marked.\n\nMark the head processed and account for it, then consume only the\nentry_count - 1 continuation IOCBs, matching __qla_copy_purex_to_buffer()."
    }
  ],
  "id": "CVE-2026-93242",
  "lastModified": "2026-10-19T10:17:15.323",
  "metrics": {},
  "published": "2026-09-24T16:17:20.090",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/31715d1e1cbf3a37ce3452635c5602f73fd7abd4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3ba019bdd89d931499d9476456b5d9c7ab7fa753"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6e3f129538c32d0019437197735912308c161843"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a136c311676fd1010b1bde3bcfd410caa2fa040f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bd1534d4afab47f13dfc27fff6f59dd859a0ac3a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d841707fafba5f80341b82e8c3a4c24fc5aa5132"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/df86c27cf1ba9d66f737a1fa56479c6e7efafe4e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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