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scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()

Type: advisorySource: Official CVE List1 source record

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().

Announced Group revision 1
Original source ↗

CVE-2026-93242

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-93242

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
        "lessThan": "a136c311676fd1010b1bde3bcfd410caa2fa040f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
        "lessThan": "d841707fafba5f80341b82e8c3a4c24fc5aa5132",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
        "lessThan": "6e3f129538c32d0019437197735912308c161843",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
        "lessThan": "bd1534d4afab47f13dfc27fff6f59dd859a0ac3a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
        "lessThan": "31715d1e1cbf3a37ce3452635c5602f73fd7abd4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
        "lessThan": "df86c27cf1ba9d66f737a1fa56479c6e7efafe4e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fac2807946c10b9a509b9c348afd442fa823c5f7",
        "lessThan": "3ba019bdd89d931499d9476456b5d9c7ab7fa753",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/scsi/qla2xxx/qla_isr.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.15"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.15",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.51",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/scsi/qla2xxx/qla_isr.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-93242

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#37938 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-93242 · Revision 1Source updated