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CVE-2026-68362

Estado: RecibidaSin puntuar—

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

wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin

In ATH11K_QMI_EVENT_FW_READY, ATH11K_FLAG_REGISTERED is set unconditionally even when ath11k_core_qmi_firmware_ready() fails. This leaves the driver in an inconsistent state where initialization is considered complete although the firmware ready handling did not finish successfully. During the subsequent SSR, the driver enters the restart path based on this incorrect state and dereferences uninitialized srng members, resulting in a NULL pointer dereference.

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Fix this by: - skipping firmware_ready if ATH11K_FLAG_REGISTERED is already set - setting ATH11K_FLAG_REGISTERED only when firmware_ready succeeds - setting ATH11K_FLAG_QMI_FAIL and aborting the FW_READY handling on error

Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.2.0.c2-00204-QCAMSLSWPLZ-1

Detalles técnicos trazas, registros y código del informe original
Call trace:
  ath11k_hal_srng_access_begin+0xc/0x60 [ath11k] (P)
  ath11k_ce_cleanup_pipes+0x17c/0x180 [ath11k]
  ath11k_core_restart+0x40/0x168 [ath11k]

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-2026-68362",
  "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": "6fe62a8cec51c756159c71be35a16b2cc8cbd4c0",
              "lessThan": "66bf998b18334ca97321433e4ab783b6ff267e9d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6fe62a8cec51c756159c71be35a16b2cc8cbd4c0",
              "lessThan": "e517e207300edcf7f3a8f6c45f9155c0e419ffb9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6fe62a8cec51c756159c71be35a16b2cc8cbd4c0",
              "lessThan": "d6bba659ac30d862ee7bab92862cd6e514f07521",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6fe62a8cec51c756159c71be35a16b2cc8cbd4c0",
              "lessThan": "e5394605f9a985cc3a8263e610ba84b33cbe7b0c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6fe62a8cec51c756159c71be35a16b2cc8cbd4c0",
              "lessThan": "4abb4e284d8897176e91d7a3168ee29ed876bb41",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6fe62a8cec51c756159c71be35a16b2cc8cbd4c0",
              "lessThan": "e8d85672dd7e2523f774caafba8f858384e18df7",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/ath/ath11k/qmi.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.1",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/ath/ath11k/qmi.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:28.750",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4abb4e284d8897176e91d7a3168ee29ed876bb41",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/66bf998b18334ca97321433e4ab783b6ff267e9d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d6bba659ac30d862ee7bab92862cd6e514f07521",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e517e207300edcf7f3a8f6c45f9155c0e419ffb9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e5394605f9a985cc3a8263e610ba84b33cbe7b0c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e8d85672dd7e2523f774caafba8f858384e18df7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin\n\nIn ATH11K_QMI_EVENT_FW_READY, ATH11K_FLAG_REGISTERED is set\nunconditionally even when ath11k_core_qmi_firmware_ready() fails.\nThis leaves the driver in an inconsistent state where\ninitialization is considered complete although the firmware ready\nhandling did not finish successfully. During the subsequent SSR,\nthe driver enters the restart path based on this incorrect state\nand dereferences uninitialized srng members, resulting in a NULL\npointer dereference.\n\nCall trace:\n  ath11k_hal_srng_access_begin+0xc/0x60 [ath11k] (P)\n  ath11k_ce_cleanup_pipes+0x17c/0x180 [ath11k]\n  ath11k_core_restart+0x40/0x168 [ath11k]\n\nFix this by:\n- skipping firmware_ready if ATH11K_FLAG_REGISTERED is already set\n- setting ATH11K_FLAG_REGISTERED only when firmware_ready succeeds\n- setting ATH11K_FLAG_QMI_FAIL and aborting the FW_READY handling\non error\n\nTested-on: WCN6750 hw1.0 AHB WLAN.MSL.2.0.c2-00204-QCAMSLSWPLZ-1"
    }
  ],
  "lastModified": "2026-08-19T17:20:45.827",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}