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CVE-2026-89845

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

scsi: qla2xxx: Avoid req_q_map double-read in qla2x00_error_entry()

qla2x00_error_entry() reads ha->req_q_map[que] twice: once for the NULL check and again when assigning it to req. The map slot is cleared by qla25xx_free_req_que() (ha->req_q_map[que_id] = NULL under mq_lock) during queue teardown, while the response-queue interrupt that drives qla2x00_error_entry() is still registered (the IRQ is released later in qla25xx_free_rsp_que()). If the slot is set to NULL between the two reads, req becomes NULL and is dereferenced.

Read the slot once into req and NULL-check the local before use. mq_lock is a mutex and cannot be taken from interrupt context, so the single read plus local check is the appropriate fix for the reported NULL dereference.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-89845",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
              "lessThan": "c845f2597787ef70159a32566669e308b2807a56",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
              "lessThan": "fe04b31e386aee4cc3a18f07462af146037dc389",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
              "lessThan": "1b995cf4157465357d66ba096e7cdaafab9972e7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
              "lessThan": "d79376fbd2a076de82c1cd8aa0b600b300c75a44",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
              "lessThan": "1c90b74e484ba48f31944fe04963d99e01ac3767",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
              "lessThan": "5dd9bec8004ba93cee8b689bf54ce294f59e5e3c",
              "versionType": "git"
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              "status": "affected",
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              "lessThan": "deb8abde83a799d2501f3977f6d6051000253f5e",
              "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": "3.4"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.4",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "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-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_isr.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-16T11:16:51.720",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1b995cf4157465357d66ba096e7cdaafab9972e7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1c90b74e484ba48f31944fe04963d99e01ac3767",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/35124cfa9898b2088ee72859e573e0876aff66fc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5dd9bec8004ba93cee8b689bf54ce294f59e5e3c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c845f2597787ef70159a32566669e308b2807a56",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d79376fbd2a076de82c1cd8aa0b600b300c75a44",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/deb8abde83a799d2501f3977f6d6051000253f5e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fe04b31e386aee4cc3a18f07462af146037dc389",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Avoid req_q_map double-read in qla2x00_error_entry()\n\nqla2x00_error_entry() reads ha->req_q_map[que] twice: once for the NULL\ncheck and again when assigning it to req. The map slot is cleared by\nqla25xx_free_req_que() (ha->req_q_map[que_id] = NULL under mq_lock)\nduring queue teardown, while the response-queue interrupt that drives\nqla2x00_error_entry() is still registered (the IRQ is released later in\nqla25xx_free_rsp_que()). If the slot is set to NULL between the two\nreads, req becomes NULL and is dereferenced.\n\nRead the slot once into req and NULL-check the local before use. mq_lock\nis a mutex and cannot be taken from interrupt context, so the single\nread plus local check is the appropriate fix for the reported NULL\ndereference."
    }
  ],
  "lastModified": "2026-09-16T11:16:51.720",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}