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CVE-2025-68745

Estado: AplazadaCrítica (9.8)—

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

scsi: qla2xxx: Clear cmds after chip reset

Commit aefed3e5548f ("scsi: qla2xxx: target: Fix offline port handling and host reset handling") caused two problems:

So revert "scsi: qla2xxx: Fix missed DMA unmap for aborted commands" and partially revert "scsi: qla2xxx: target: Fix offline port handling and host reset handling" at __qla2x00_abort_all_cmds.

Detalles técnicos trazas, registros y código del informe original
1. Commands sent to FW, after chip reset got stuck and never freed as FW
   is not going to respond to them anymore.

2. BUG_ON(cmd->sg_mapped) in qlt_free_cmd().  Commit 26f9ce53817a
   ("scsi: qla2xxx: Fix missed DMA unmap for aborted commands")
   attempted to fix this, but introduced another bug under different
   circumstances when two different CPUs were racing to call
   qlt_unmap_sg() at the same time: BUG_ON(!valid_dma_direction(dir)) in
   dma_unmap_sg_attrs().

CVSS

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector CVSS AV:N sin PR/UI permite explotación remota (T1190). La vulnerabilidad causa bloqueo de comandos y crash (BUG_ON) en el kernel, resultando en denegación de servicio (T1499.004).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

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)

Mostrar
{
  "id": "CVE-2025-68745",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "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": "aefed3e5548f28e5fecafda6604fcbc65484dbaa",
              "lessThan": "5c1fb3fd05da3d55b8cbc42d7d660b313cbdc936",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "aefed3e5548f28e5fecafda6604fcbc65484dbaa",
              "lessThan": "d46c69a087aa3d1513f7a78f871b80251ea0c1ae",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "eb67b7a23d357f578578e737cb6412ae2384f352",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ec9639d92c1e10d4bc667e842753d85e21683d5c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e6e957f552d5b696879a31e5b0e2a9120e1ea86e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4.9.316",
              "lessThan": "4.10",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "4.14.281",
              "lessThan": "4.15",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "4.19.245",
              "lessThan": "4.20",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_os.c",
            "drivers/scsi/qla2xxx/qla_target.c",
            "drivers/scsi/qla2xxx/qla_target.h"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_os.c",
            "drivers/scsi/qla2xxx/qla_target.c",
            "drivers/scsi/qla2xxx/qla_target.h"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T13:16:29.440",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/5c1fb3fd05da3d55b8cbc42d7d660b313cbdc936",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d46c69a087aa3d1513f7a78f871b80251ea0c1ae",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Clear cmds after chip reset\n\nCommit aefed3e5548f (\"scsi: qla2xxx: target: Fix offline port handling\nand host reset handling\") caused two problems:\n\n1. Commands sent to FW, after chip reset got stuck and never freed as FW\n   is not going to respond to them anymore.\n\n2. BUG_ON(cmd->sg_mapped) in qlt_free_cmd().  Commit 26f9ce53817a\n   (\"scsi: qla2xxx: Fix missed DMA unmap for aborted commands\")\n   attempted to fix this, but introduced another bug under different\n   circumstances when two different CPUs were racing to call\n   qlt_unmap_sg() at the same time: BUG_ON(!valid_dma_direction(dir)) in\n   dma_unmap_sg_attrs().\n\nSo revert \"scsi: qla2xxx: Fix missed DMA unmap for aborted commands\" and\npartially revert \"scsi: qla2xxx: target: Fix offline port handling and\nhost reset handling\" at __qla2x00_abort_all_cmds."
    }
  ],
  "lastModified": "2026-07-30T06:24:42.167",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}