CVE-2025-39890

Estado: ModificadaMedia (5.5)—

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

wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event

Currently, in ath12k_service_ready_ext_event(), svc_rdy_ext.mac_phy_caps is not freed in the failure case, causing a memory leak. The following trace is observed in kmemleak:

Free svc_rdy_ext.mac_phy_caps in the error case to fix this memory leak.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1

Detalles técnicos trazas, registros y código del informe original

unreferenced object 0xffff8b3eb5789c00 (size 1024):
 comm "softirq", pid 0, jiffies 4294942577
 hex dump (first 32 bytes):
   00 00 00 00 01 00 00 00 00 00 00 00 7b 00 00 10  ............{...
   01 00 00 00 00 00 00 00 01 00 00 00 1f 38 00 00  .............8..
 backtrace (crc 44e1c357):
   __kmalloc_noprof+0x30b/0x410
   ath12k_wmi_mac_phy_caps_parse+0x84/0x100 [ath12k]
   ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k]
   ath12k_wmi_svc_rdy_ext_parse+0x308/0x4c0 [ath12k]
   ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k]
   ath12k_service_ready_ext_event.isra.0+0x44/0xd0 [ath12k]
   ath12k_wmi_op_rx+0x2eb/0xd70 [ath12k]
   ath12k_htc_rx_completion_handler+0x1f4/0x330 [ath12k]
   ath12k_ce_recv_process_cb+0x218/0x300 [ath12k]
   ath12k_pci_ce_workqueue+0x1b/0x30 [ath12k]
   process_one_work+0x219/0x680
   bh_worker+0x198/0x1f0
   tasklet_action+0x13/0x30
   handle_softirqs+0xca/0x460
   __irq_exit_rcu+0xbe/0x110
   irq_exit_rcu+0x9/0x30

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.14%
Percentil entre todas las CVEs puntuadas: 3
Fecha de la puntuación: 6/10/2026

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)

Linux — Linux Kernel

CWE

CWE-401
CWE-401

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2025-39890",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-39890",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          ],
          "version": "2.0.3",
          "timestamp": "2026-01-14T17:35:11.239595Z"
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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              "version": "6.12.34",
              "versionType": "semver",
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  "published": "2025-09-24T11:15:32.920",
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      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-401"
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      ]
    },
    {
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      "description": [
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          "value": "CWE-401"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: fix memory leak in ath12k_service_ready_ext_event\n\nCurrently, in ath12k_service_ready_ext_event(), svc_rdy_ext.mac_phy_caps\nis not freed in the failure case, causing a memory leak. The following\ntrace is observed in kmemleak:\n\nunreferenced object 0xffff8b3eb5789c00 (size 1024):\n comm \"softirq\", pid 0, jiffies 4294942577\n hex dump (first 32 bytes):\n   00 00 00 00 01 00 00 00 00 00 00 00 7b 00 00 10  ............{...\n   01 00 00 00 00 00 00 00 01 00 00 00 1f 38 00 00  .............8..\n backtrace (crc 44e1c357):\n   __kmalloc_noprof+0x30b/0x410\n   ath12k_wmi_mac_phy_caps_parse+0x84/0x100 [ath12k]\n   ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k]\n   ath12k_wmi_svc_rdy_ext_parse+0x308/0x4c0 [ath12k]\n   ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k]\n   ath12k_service_ready_ext_event.isra.0+0x44/0xd0 [ath12k]\n   ath12k_wmi_op_rx+0x2eb/0xd70 [ath12k]\n   ath12k_htc_rx_completion_handler+0x1f4/0x330 [ath12k]\n   ath12k_ce_recv_process_cb+0x218/0x300 [ath12k]\n   ath12k_pci_ce_workqueue+0x1b/0x30 [ath12k]\n   process_one_work+0x219/0x680\n   bh_worker+0x198/0x1f0\n   tasklet_action+0x13/0x30\n   handle_softirqs+0xca/0x460\n   __irq_exit_rcu+0xbe/0x110\n   irq_exit_rcu+0x9/0x30\n\nFree svc_rdy_ext.mac_phy_caps in the error case to fix this memory leak.\n\nTested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: ath12k: Soluciona una fuga de memoria en ath12k_service_ready_ext_event\n\nActualmente, en ath12k_service_ready_ext_event(), svc_rdy_ext.mac_phy_caps no se libera en caso de fallo, causando una fuga de memoria. Se observa el siguiente rastro en kmemleak:\n\nobjeto sin referencia 0xffff8b3eb5789c00 (tamaño 1024):\n comm “softirq”, pid 0, jiffies 4294942577\n volcado hexadecimal (primeros 32 bytes):\n   00 00 00 00 01 00 00 00 00 00 00 00 7b 00 00 10  ............{...\n   01 00 00 00 00 00 00 00 01 00 00 00 1f 38 00 00  .............8..\n rastreo de pila (crc 44e1c357):\n   __kmalloc_noprof+0x30b/0x410\n   ath12k_wmi_mac_phy_caps_parse+0x84/0x100 [ath12k]\n   ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k]\n   ath12k_wmi_svc_rdy_ext_parse+0x308/0x4c0 [ath12k]\n   ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k]\n   ath12k_service_ready_ext_event.isra.0+0x44/0xd0 [ath12k]\n   ath12k_wmi_op_rx+0x2eb/0xd70 [ath12k]\n   ath12k_htc_rx_completion_handler+0x1f4/0x330 [ath12k]\n   ath12k_ce_recv_process_cb+0x218/0x300 [ath12k]\n   ath12k_pci_ce_workqueue+0x1b/0x30 [ath12k]\n   process_one_work+0x219/0x680\n   bh_worker+0x198/0x1f0\n   tasklet_action+0x13/0x30\n   handle_softirqs+0xca/0x460\n   __irq_exit_rcu+0xbe/0x110\n   irq_exit_rcu+0x9/0x30\n\nLiberar svc_rdy_ext.mac_phy_caps en caso de error para solucionar esta fuga de memoria.\n\nProbado en: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1"
    }
  ],
  "lastModified": "2026-09-26T00:10:00.127",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2F32A46D-A3D6-46B7-841B-D6FED06301AA",
              "versionEndExcluding": "6.6.94",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}