CVE-2025-38136 (GCVE-0-2025-38136)

Vulnerability from cvelistv5 – Published: 2025-07-03 08:35 – Updated: 2025-11-03 17:34
VLAI?
Title
usb: renesas_usbhs: Reorder clock handling and power management in probe
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: renesas_usbhs: Reorder clock handling and power management in probe Reorder the initialization sequence in `usbhs_probe()` to enable runtime PM before accessing registers, preventing potential crashes due to uninitialized clocks. Currently, in the probe path, registers are accessed before enabling the clocks, leading to a synchronous external abort on the RZ/V2H SoC. The problematic call flow is as follows: usbhs_probe() usbhs_sys_clock_ctrl() usbhs_bset() usbhs_write() iowrite16() <-- Register access before enabling clocks Since `iowrite16()` is performed without ensuring the required clocks are enabled, this can lead to access errors. To fix this, enable PM runtime early in the probe function and ensure clocks are acquired before register access, preventing crashes like the following on RZ/V2H: [13.272640] Internal error: synchronous external abort: 0000000096000010 [#1] PREEMPT SMP [13.280814] Modules linked in: cec renesas_usbhs(+) drm_kms_helper fuse drm backlight ipv6 [13.289088] CPU: 1 UID: 0 PID: 195 Comm: (udev-worker) Not tainted 6.14.0-rc7+ #98 [13.296640] Hardware name: Renesas RZ/V2H EVK Board based on r9a09g057h44 (DT) [13.303834] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [13.310770] pc : usbhs_bset+0x14/0x4c [renesas_usbhs] [13.315831] lr : usbhs_probe+0x2e4/0x5ac [renesas_usbhs] [13.321138] sp : ffff8000827e3850 [13.324438] x29: ffff8000827e3860 x28: 0000000000000000 x27: ffff8000827e3ca0 [13.331554] x26: ffff8000827e3ba0 x25: ffff800081729668 x24: 0000000000000025 [13.338670] x23: ffff0000c0f08000 x22: 0000000000000000 x21: ffff0000c0f08010 [13.345783] x20: 0000000000000000 x19: ffff0000c3b52080 x18: 00000000ffffffff [13.352895] x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000827e36ce [13.360009] x14: 00000000000003d7 x13: 00000000000003d7 x12: 0000000000000000 [13.367122] x11: 0000000000000000 x10: 0000000000000aa0 x9 : ffff8000827e3750 [13.374235] x8 : ffff0000c1850b00 x7 : 0000000003826060 x6 : 000000000000001c [13.381347] x5 : 000000030d5fcc00 x4 : ffff8000825c0000 x3 : 0000000000000000 [13.388459] x2 : 0000000000000400 x1 : 0000000000000000 x0 : ffff0000c3b52080 [13.395574] Call trace: [13.398013] usbhs_bset+0x14/0x4c [renesas_usbhs] (P) [13.403076] platform_probe+0x68/0xdc [13.406738] really_probe+0xbc/0x2c0 [13.410306] __driver_probe_device+0x78/0x120 [13.414653] driver_probe_device+0x3c/0x154 [13.418825] __driver_attach+0x90/0x1a0 [13.422647] bus_for_each_dev+0x7c/0xe0 [13.426470] driver_attach+0x24/0x30 [13.430032] bus_add_driver+0xe4/0x208 [13.433766] driver_register+0x68/0x130 [13.437587] __platform_driver_register+0x24/0x30 [13.442273] renesas_usbhs_driver_init+0x20/0x1000 [renesas_usbhs] [13.448450] do_one_initcall+0x60/0x1d4 [13.452276] do_init_module+0x54/0x1f8 [13.456014] load_module+0x1754/0x1c98 [13.459750] init_module_from_file+0x88/0xcc [13.464004] __arm64_sys_finit_module+0x1c4/0x328 [13.468689] invoke_syscall+0x48/0x104 [13.472426] el0_svc_common.constprop.0+0xc0/0xe0 [13.477113] do_el0_svc+0x1c/0x28 [13.480415] el0_svc+0x30/0xcc [13.483460] el0t_64_sync_handler+0x10c/0x138 [13.487800] el0t_64_sync+0x198/0x19c [13.491453] Code: 2a0103e1 12003c42 12003c63 8b010084 (79400084) [13.497522] ---[ end trace 0000000000000000 ]---
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 095cc0b5888acc228f12344e85b17539b9ce9367 (git)
Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 155453ada562c450a4ff5fcf4852b9fa5b6b793a (git)
Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 0a1e16a6cbf4452b46f20b862d6141a1e90844ee (git)
Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 1637623ad6205162b17804d07512e6f4cbd2a050 (git)
Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < db96a4fd8614d47c0def265e0e6c996b0ee52a38 (git)
Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < d4c368e4a638ddf4a9d6d687b0ff691aa46cce53 (git)
Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 6bab152e817fd41b9e178fa6b275354795c9703d (git)
Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < ffb34a60ce86656ba12d46e91f1ccc71dd221251 (git)
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    Linux Linux Affected: 3.0
Unaffected: 0 , < 3.0 (semver)
Unaffected: 5.4.295 , ≤ 5.4.* (semver)
Unaffected: 5.10.239 , ≤ 5.10.* (semver)
Unaffected: 5.15.186 , ≤ 5.15.* (semver)
Unaffected: 6.1.142 , ≤ 6.1.* (semver)
Unaffected: 6.6.94 , ≤ 6.6.* (semver)
Unaffected: 6.12.34 , ≤ 6.12.* (semver)
Unaffected: 6.15.3 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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{
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        "providerMetadata": {
          "dateUpdated": "2025-11-03T17:34:28.949Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
          }
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        "title": "CVE Program Container"
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    "cna": {
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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
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                {
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: renesas_usbhs: Reorder clock handling and power management in probe\n\nReorder the initialization sequence in `usbhs_probe()` to enable runtime\nPM before accessing registers, preventing potential crashes due to\nuninitialized clocks.\n\nCurrently, in the probe path, registers are accessed before enabling the\nclocks, leading to a synchronous external abort on the RZ/V2H SoC.\nThe problematic call flow is as follows:\n\n    usbhs_probe()\n        usbhs_sys_clock_ctrl()\n            usbhs_bset()\n                usbhs_write()\n                    iowrite16()  \u003c-- Register access before enabling clocks\n\nSince `iowrite16()` is performed without ensuring the required clocks are\nenabled, this can lead to access errors. To fix this, enable PM runtime\nearly in the probe function and ensure clocks are acquired before register\naccess, preventing crashes like the following on RZ/V2H:\n\n[13.272640] Internal error: synchronous external abort: 0000000096000010 [#1] PREEMPT SMP\n[13.280814] Modules linked in: cec renesas_usbhs(+) drm_kms_helper fuse drm backlight ipv6\n[13.289088] CPU: 1 UID: 0 PID: 195 Comm: (udev-worker) Not tainted 6.14.0-rc7+ #98\n[13.296640] Hardware name: Renesas RZ/V2H EVK Board based on r9a09g057h44 (DT)\n[13.303834] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[13.310770] pc : usbhs_bset+0x14/0x4c [renesas_usbhs]\n[13.315831] lr : usbhs_probe+0x2e4/0x5ac [renesas_usbhs]\n[13.321138] sp : ffff8000827e3850\n[13.324438] x29: ffff8000827e3860 x28: 0000000000000000 x27: ffff8000827e3ca0\n[13.331554] x26: ffff8000827e3ba0 x25: ffff800081729668 x24: 0000000000000025\n[13.338670] x23: ffff0000c0f08000 x22: 0000000000000000 x21: ffff0000c0f08010\n[13.345783] x20: 0000000000000000 x19: ffff0000c3b52080 x18: 00000000ffffffff\n[13.352895] x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000827e36ce\n[13.360009] x14: 00000000000003d7 x13: 00000000000003d7 x12: 0000000000000000\n[13.367122] x11: 0000000000000000 x10: 0000000000000aa0 x9 : ffff8000827e3750\n[13.374235] x8 : ffff0000c1850b00 x7 : 0000000003826060 x6 : 000000000000001c\n[13.381347] x5 : 000000030d5fcc00 x4 : ffff8000825c0000 x3 : 0000000000000000\n[13.388459] x2 : 0000000000000400 x1 : 0000000000000000 x0 : ffff0000c3b52080\n[13.395574] Call trace:\n[13.398013]  usbhs_bset+0x14/0x4c [renesas_usbhs] (P)\n[13.403076]  platform_probe+0x68/0xdc\n[13.406738]  really_probe+0xbc/0x2c0\n[13.410306]  __driver_probe_device+0x78/0x120\n[13.414653]  driver_probe_device+0x3c/0x154\n[13.418825]  __driver_attach+0x90/0x1a0\n[13.422647]  bus_for_each_dev+0x7c/0xe0\n[13.426470]  driver_attach+0x24/0x30\n[13.430032]  bus_add_driver+0xe4/0x208\n[13.433766]  driver_register+0x68/0x130\n[13.437587]  __platform_driver_register+0x24/0x30\n[13.442273]  renesas_usbhs_driver_init+0x20/0x1000 [renesas_usbhs]\n[13.448450]  do_one_initcall+0x60/0x1d4\n[13.452276]  do_init_module+0x54/0x1f8\n[13.456014]  load_module+0x1754/0x1c98\n[13.459750]  init_module_from_file+0x88/0xcc\n[13.464004]  __arm64_sys_finit_module+0x1c4/0x328\n[13.468689]  invoke_syscall+0x48/0x104\n[13.472426]  el0_svc_common.constprop.0+0xc0/0xe0\n[13.477113]  do_el0_svc+0x1c/0x28\n[13.480415]  el0_svc+0x30/0xcc\n[13.483460]  el0t_64_sync_handler+0x10c/0x138\n[13.487800]  el0t_64_sync+0x198/0x19c\n[13.491453] Code: 2a0103e1 12003c42 12003c63 8b010084 (79400084)\n[13.497522] ---[ end trace 0000000000000000 ]---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:13:13.215Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/095cc0b5888acc228f12344e85b17539b9ce9367"
        },
        {
          "url": "https://git.kernel.org/stable/c/155453ada562c450a4ff5fcf4852b9fa5b6b793a"
        },
        {
          "url": "https://git.kernel.org/stable/c/0a1e16a6cbf4452b46f20b862d6141a1e90844ee"
        },
        {
          "url": "https://git.kernel.org/stable/c/1637623ad6205162b17804d07512e6f4cbd2a050"
        },
        {
          "url": "https://git.kernel.org/stable/c/db96a4fd8614d47c0def265e0e6c996b0ee52a38"
        },
        {
          "url": "https://git.kernel.org/stable/c/d4c368e4a638ddf4a9d6d687b0ff691aa46cce53"
        },
        {
          "url": "https://git.kernel.org/stable/c/6bab152e817fd41b9e178fa6b275354795c9703d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ffb34a60ce86656ba12d46e91f1ccc71dd221251"
        }
      ],
      "title": "usb: renesas_usbhs: Reorder clock handling and power management in probe",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38136",
    "datePublished": "2025-07-03T08:35:39.207Z",
    "dateReserved": "2025-04-16T04:51:23.987Z",
    "dateUpdated": "2025-11-03T17:34:28.949Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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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