CVE-2026-93242 (GCVE-0-2026-93242)

Vulnerability from cvelistv5 – Published: 2026-09-24 15:40 – Updated: 2026-09-24 15:40
VLAI
Title
scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()
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().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fac2807946c10b9a509b9c348afd442fa823c5f7 , < a136c311676fd1010b1bde3bcfd410caa2fa040f (git)
Affected: fac2807946c10b9a509b9c348afd442fa823c5f7 , < d841707fafba5f80341b82e8c3a4c24fc5aa5132 (git)
Affected: fac2807946c10b9a509b9c348afd442fa823c5f7 , < 6e3f129538c32d0019437197735912308c161843 (git)
Affected: fac2807946c10b9a509b9c348afd442fa823c5f7 , < bd1534d4afab47f13dfc27fff6f59dd859a0ac3a (git)
Affected: fac2807946c10b9a509b9c348afd442fa823c5f7 , < 31715d1e1cbf3a37ce3452635c5602f73fd7abd4 (git)
Affected: fac2807946c10b9a509b9c348afd442fa823c5f7 , < df86c27cf1ba9d66f737a1fa56479c6e7efafe4e (git)
Affected: fac2807946c10b9a509b9c348afd442fa823c5f7 , < 3ba019bdd89d931499d9476456b5d9c7ab7fa753 (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.51 , ≤ 6.18.* (semver)
Unaffected: 7.2.5 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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              "versionType": "semver"
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            {
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              "version": "6.6.157",
              "versionType": "semver"
            },
            {
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              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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          "nodes": [
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                  "versionStartIncluding": "5.15",
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          "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()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-24T15:40:26.570Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/3ba019bdd89d931499d9476456b5d9c7ab7fa753"
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      ],
      "title": "scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()",
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    "datePublished": "2026-09-24T15:40:26.570Z",
    "dateReserved": "2026-09-17T16:02:15.095Z",
    "dateUpdated": "2026-09-24T15:40:26.570Z",
    "state": "PUBLISHED"
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        "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": "2026-09-24T16:17:20.090",
        "metrics": {},
        "published": "2026-09-24T16:17:20.090",
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-09-24T23:49:20Z",
      "cve": "CVE-2026-93242",
      "id": "CVE-2026-93242",
      "initial_release_date": "2026-09-24T23:49:20Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93242",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93242.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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