CVE-2025-38647 (GCVE-0-2025-38647)

Vulnerability from cvelistv5 – Published: 2025-08-22 16:00 – Updated: 2026-05-11 21:32
VLAI
Title
wifi: rtw89: sar: drop lockdep assertion in rtw89_set_sar_from_acpi
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: sar: drop lockdep assertion in rtw89_set_sar_from_acpi The following assertion is triggered on the rtw89 driver startup. It looks meaningless to hold wiphy lock on the early init stage so drop the assertion. WARNING: CPU: 7 PID: 629 at drivers/net/wireless/realtek/rtw89/sar.c:502 rtw89_set_sar_from_acpi+0x365/0x4d0 [rtw89_core] CPU: 7 UID: 0 PID: 629 Comm: (udev-worker) Not tainted 6.15.0+ #29 PREEMPT(lazy) Hardware name: LENOVO 21D0/LNVNB161216, BIOS J6CN50WW 09/27/2024 RIP: 0010:rtw89_set_sar_from_acpi+0x365/0x4d0 [rtw89_core] Call Trace: <TASK> rtw89_sar_init+0x68/0x2c0 [rtw89_core] rtw89_core_init+0x188e/0x1e50 [rtw89_core] rtw89_pci_probe+0x530/0xb50 [rtw89_pci] local_pci_probe+0xd9/0x190 pci_call_probe+0x183/0x540 pci_device_probe+0x171/0x2c0 really_probe+0x1e1/0x890 __driver_probe_device+0x18c/0x390 driver_probe_device+0x4a/0x120 __driver_attach+0x1a0/0x530 bus_for_each_dev+0x10b/0x190 bus_add_driver+0x2eb/0x540 driver_register+0x1a3/0x3a0 do_one_initcall+0xd5/0x450 do_init_module+0x2cc/0x8f0 init_module_from_file+0xe1/0x150 idempotent_init_module+0x226/0x760 __x64_sys_finit_module+0xcd/0x150 do_syscall_64+0x94/0x380 entry_SYSCALL_64_after_hwframe+0x76/0x7e Found by Linux Verification Center (linuxtesting.org).
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 88ca3107d2ce06448018e0571f7c0f1b40f57b55 , < f7ac6df92eee030151476078069dc3eb0002dfb0 (git)
Affected: 88ca3107d2ce06448018e0571f7c0f1b40f57b55 , < 6fe21445f7e801de5527d420f8e25e97b0cdd7e2 (git)
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Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.16.1 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
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          "product": "Linux",
          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: sar: drop lockdep assertion in rtw89_set_sar_from_acpi\n\nThe following assertion is triggered on the rtw89 driver startup. It\nlooks meaningless to hold wiphy lock on the early init stage so drop the\nassertion.\n\n WARNING: CPU: 7 PID: 629 at drivers/net/wireless/realtek/rtw89/sar.c:502 rtw89_set_sar_from_acpi+0x365/0x4d0 [rtw89_core]\n CPU: 7 UID: 0 PID: 629 Comm: (udev-worker) Not tainted 6.15.0+ #29 PREEMPT(lazy)\n Hardware name: LENOVO 21D0/LNVNB161216, BIOS J6CN50WW 09/27/2024\n RIP: 0010:rtw89_set_sar_from_acpi+0x365/0x4d0 [rtw89_core]\n Call Trace:\n  \u003cTASK\u003e\n  rtw89_sar_init+0x68/0x2c0 [rtw89_core]\n  rtw89_core_init+0x188e/0x1e50 [rtw89_core]\n  rtw89_pci_probe+0x530/0xb50 [rtw89_pci]\n  local_pci_probe+0xd9/0x190\n  pci_call_probe+0x183/0x540\n  pci_device_probe+0x171/0x2c0\n  really_probe+0x1e1/0x890\n  __driver_probe_device+0x18c/0x390\n  driver_probe_device+0x4a/0x120\n  __driver_attach+0x1a0/0x530\n  bus_for_each_dev+0x10b/0x190\n  bus_add_driver+0x2eb/0x540\n  driver_register+0x1a3/0x3a0\n  do_one_initcall+0xd5/0x450\n  do_init_module+0x2cc/0x8f0\n  init_module_from_file+0xe1/0x150\n  idempotent_init_module+0x226/0x760\n  __x64_sys_finit_module+0xcd/0x150\n  do_syscall_64+0x94/0x380\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFound by Linux Verification Center (linuxtesting.org)."
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      "providerMetadata": {
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      "title": "wifi: rtw89: sar: drop lockdep assertion in rtw89_set_sar_from_acpi",
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    "datePublished": "2025-08-22T16:00:52.106Z",
    "dateReserved": "2025-04-16T04:51:24.030Z",
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        "descriptions": [
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: sar: drop lockdep assertion in rtw89_set_sar_from_acpi\n\nThe following assertion is triggered on the rtw89 driver startup. It\nlooks meaningless to hold wiphy lock on the early init stage so drop the\nassertion.\n\n WARNING: CPU: 7 PID: 629 at drivers/net/wireless/realtek/rtw89/sar.c:502 rtw89_set_sar_from_acpi+0x365/0x4d0 [rtw89_core]\n CPU: 7 UID: 0 PID: 629 Comm: (udev-worker) Not tainted 6.15.0+ #29 PREEMPT(lazy)\n Hardware name: LENOVO 21D0/LNVNB161216, BIOS J6CN50WW 09/27/2024\n RIP: 0010:rtw89_set_sar_from_acpi+0x365/0x4d0 [rtw89_core]\n Call Trace:\n  \u003cTASK\u003e\n  rtw89_sar_init+0x68/0x2c0 [rtw89_core]\n  rtw89_core_init+0x188e/0x1e50 [rtw89_core]\n  rtw89_pci_probe+0x530/0xb50 [rtw89_pci]\n  local_pci_probe+0xd9/0x190\n  pci_call_probe+0x183/0x540\n  pci_device_probe+0x171/0x2c0\n  really_probe+0x1e1/0x890\n  __driver_probe_device+0x18c/0x390\n  driver_probe_device+0x4a/0x120\n  __driver_attach+0x1a0/0x530\n  bus_for_each_dev+0x10b/0x190\n  bus_add_driver+0x2eb/0x540\n  driver_register+0x1a3/0x3a0\n  do_one_initcall+0xd5/0x450\n  do_init_module+0x2cc/0x8f0\n  init_module_from_file+0xe1/0x150\n  idempotent_init_module+0x226/0x760\n  __x64_sys_finit_module+0xcd/0x150\n  do_syscall_64+0x94/0x380\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFound by Linux Verification Center (linuxtesting.org)."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: rtw89: sar: se omite la aserci\u00f3n lockdep en rtw89_set_sar_from_acpi. La siguiente aserci\u00f3n se activa al iniciar el controlador rtw89. Parece in\u00fatil mantener el bloqueo de wiphy en la fase inicial, por lo que se omite la aserci\u00f3n. ADVERTENCIA: CPU: 7 PID: 629 en drivers/net/wireless/realtek/rtw89/sar.c:502 rtw89_set_sar_from_acpi+0x365/0x4d0 [rtw89_core] CPU: 7 UID: 0 PID: 629 Comm: (udev-worker) No contaminado 6.15.0+ #29 PREEMPT(lazy) Nombre del hardware: LENOVO 21D0/LNVNB161216, BIOS J6CN50WW 27/09/2024 RIP: 0010:rtw89_set_sar_from_acpi+0x365/0x4d0 [rtw89_core] Rastreo de llamadas:  rtw89_sar_init+0x68/0x2c0 [rtw89_core] rtw89_core_init+0x188e/0x1e50 [rtw89_core] rtw89_pci_probe+0x530/0xb50 [rtw89_pci] local_pci_probe+0xd9/0x190 pci_call_probe+0x183/0x540 pci_device_probe+0x171/0x2c0 really_probe+0x1e1/0x890 __driver_probe_device+0x18c/0x390 driver_probe_device+0x4a/0x120 __driver_attach+0x1a0/0x530 bus_for_each_dev+0x10b/0x190 bus_add_driver+0x2eb/0x540 driver_register+0x1a3/0x3a0 do_one_initcall+0xd5/0x450 do_init_module+0x2cc/0x8f0 init_module_from_file+0xe1/0x150 idempotent_init_module+0x226/0x760 __x64_sys_finit_module+0xcd/0x150 do_syscall_64+0x94/0x380 entry_SYSCALL_64_after_hwframe+0x76/0x7e Encontrado por el Centro de verificaci\u00f3n de Linux (linuxtesting.org)."
          }
        ],
        "id": "CVE-2025-38647",
        "lastModified": "2026-06-17T09:17:17.873",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-08-22T16:15:39.337",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T01:14:08+00:00",
      "cve": "CVE-2025-38647",
      "id": "CVE-2025-38647",
      "initial_release_date": "2025-08-22T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: rtw89: sar: drop lockdep assertion in rtw89_set_sar_from_acpi",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38647.json",
      "version": "3"
    }
  }
}



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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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