CVE-2025-21912 (GCVE-0-2025-21912)

Vulnerability from cvelistv5 – Published: 2025-04-01 15:40 – Updated: 2026-01-02 15:28
VLAI?
Title
gpio: rcar: Use raw_spinlock to protect register access
Summary
In the Linux kernel, the following vulnerability has been resolved: gpio: rcar: Use raw_spinlock to protect register access Use raw_spinlock in order to fix spurious messages about invalid context when spinlock debugging is enabled. The lock is only used to serialize register access. [ 4.239592] ============================= [ 4.239595] [ BUG: Invalid wait context ] [ 4.239599] 6.13.0-rc7-arm64-renesas-05496-gd088502a519f #35 Not tainted [ 4.239603] ----------------------------- [ 4.239606] kworker/u8:5/76 is trying to lock: [ 4.239609] ffff0000091898a0 (&p->lock){....}-{3:3}, at: gpio_rcar_config_interrupt_input_mode+0x34/0x164 [ 4.239641] other info that might help us debug this: [ 4.239643] context-{5:5} [ 4.239646] 5 locks held by kworker/u8:5/76: [ 4.239651] #0: ffff0000080fb148 ((wq_completion)async){+.+.}-{0:0}, at: process_one_work+0x190/0x62c [ 4.250180] OF: /soc/sound@ec500000/ports/port@0/endpoint: Read of boolean property 'frame-master' with a value. [ 4.254094] #1: ffff80008299bd80 ((work_completion)(&entry->work)){+.+.}-{0:0}, at: process_one_work+0x1b8/0x62c [ 4.254109] #2: ffff00000920c8f8 [ 4.258345] OF: /soc/sound@ec500000/ports/port@1/endpoint: Read of boolean property 'bitclock-master' with a value. [ 4.264803] (&dev->mutex){....}-{4:4}, at: __device_attach_async_helper+0x3c/0xdc [ 4.264820] #3: ffff00000a50ca40 (request_class#2){+.+.}-{4:4}, at: __setup_irq+0xa0/0x690 [ 4.264840] #4: [ 4.268872] OF: /soc/sound@ec500000/ports/port@1/endpoint: Read of boolean property 'frame-master' with a value. [ 4.273275] ffff00000a50c8c8 (lock_class){....}-{2:2}, at: __setup_irq+0xc4/0x690 [ 4.296130] renesas_sdhi_internal_dmac ee100000.mmc: mmc1 base at 0x00000000ee100000, max clock rate 200 MHz [ 4.304082] stack backtrace: [ 4.304086] CPU: 1 UID: 0 PID: 76 Comm: kworker/u8:5 Not tainted 6.13.0-rc7-arm64-renesas-05496-gd088502a519f #35 [ 4.304092] Hardware name: Renesas Salvator-X 2nd version board based on r8a77965 (DT) [ 4.304097] Workqueue: async async_run_entry_fn [ 4.304106] Call trace: [ 4.304110] show_stack+0x14/0x20 (C) [ 4.304122] dump_stack_lvl+0x6c/0x90 [ 4.304131] dump_stack+0x14/0x1c [ 4.304138] __lock_acquire+0xdfc/0x1584 [ 4.426274] lock_acquire+0x1c4/0x33c [ 4.429942] _raw_spin_lock_irqsave+0x5c/0x80 [ 4.434307] gpio_rcar_config_interrupt_input_mode+0x34/0x164 [ 4.440061] gpio_rcar_irq_set_type+0xd4/0xd8 [ 4.444422] __irq_set_trigger+0x5c/0x178 [ 4.448435] __setup_irq+0x2e4/0x690 [ 4.452012] request_threaded_irq+0xc4/0x190 [ 4.456285] devm_request_threaded_irq+0x7c/0xf4 [ 4.459398] ata1: link resume succeeded after 1 retries [ 4.460902] mmc_gpiod_request_cd_irq+0x68/0xe0 [ 4.470660] mmc_start_host+0x50/0xac [ 4.474327] mmc_add_host+0x80/0xe4 [ 4.477817] tmio_mmc_host_probe+0x2b0/0x440 [ 4.482094] renesas_sdhi_probe+0x488/0x6f4 [ 4.486281] renesas_sdhi_internal_dmac_probe+0x60/0x78 [ 4.491509] platform_probe+0x64/0xd8 [ 4.495178] really_probe+0xb8/0x2a8 [ 4.498756] __driver_probe_device+0x74/0x118 [ 4.503116] driver_probe_device+0x3c/0x154 [ 4.507303] __device_attach_driver+0xd4/0x160 [ 4.511750] bus_for_each_drv+0x84/0xe0 [ 4.515588] __device_attach_async_helper+0xb0/0xdc [ 4.520470] async_run_entry_fn+0x30/0xd8 [ 4.524481] process_one_work+0x210/0x62c [ 4.528494] worker_thread+0x1ac/0x340 [ 4.532245] kthread+0x10c/0x110 [ 4.535476] ret_from_fork+0x10/0x20
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 119f5e448d32c11faf22fe81f6f2d78467a47149 , < 389891ac9f678baf68e13623ef1308493af4b074 (git)
Affected: 119f5e448d32c11faf22fe81f6f2d78467a47149 , < 7c1f36f9c9aca507d317479a3d3388150ae40a87 (git)
Affected: 119f5e448d32c11faf22fe81f6f2d78467a47149 , < 3e300913c42041e81c5b17a970c4e078086ff2d1 (git)
Affected: 119f5e448d32c11faf22fe81f6f2d78467a47149 , < c10365031f16514a29c812cd909085a6e4ea4b61 (git)
Affected: 119f5e448d32c11faf22fe81f6f2d78467a47149 , < b42c84f9e4ec5bc2885e7fd80c79ec0352f5d2af (git)
Affected: 119f5e448d32c11faf22fe81f6f2d78467a47149 , < 51ef3073493e2a25dced05fdd59dfb059e7e284d (git)
Affected: 119f5e448d32c11faf22fe81f6f2d78467a47149 , < f02c41f87cfe61440c18bf77d1ef0a884b9ee2b5 (git)
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    Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 5.10.241 , ≤ 5.10.* (semver)
Unaffected: 5.15.179 , ≤ 5.15.* (semver)
Unaffected: 6.1.131 , ≤ 6.1.* (semver)
Unaffected: 6.6.83 , ≤ 6.6.* (semver)
Unaffected: 6.12.19 , ≤ 6.12.* (semver)
Unaffected: 6.13.7 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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{
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      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:38:58.412Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-rcar.c"
          ],
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          "vendor": "Linux",
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      "cpeApplicability": [
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: rcar: Use raw_spinlock to protect register access\n\nUse raw_spinlock in order to fix spurious messages about invalid context\nwhen spinlock debugging is enabled. The lock is only used to serialize\nregister access.\n\n    [    4.239592] =============================\n    [    4.239595] [ BUG: Invalid wait context ]\n    [    4.239599] 6.13.0-rc7-arm64-renesas-05496-gd088502a519f #35 Not tainted\n    [    4.239603] -----------------------------\n    [    4.239606] kworker/u8:5/76 is trying to lock:\n    [    4.239609] ffff0000091898a0 (\u0026p-\u003elock){....}-{3:3}, at: gpio_rcar_config_interrupt_input_mode+0x34/0x164\n    [    4.239641] other info that might help us debug this:\n    [    4.239643] context-{5:5}\n    [    4.239646] 5 locks held by kworker/u8:5/76:\n    [    4.239651]  #0: ffff0000080fb148 ((wq_completion)async){+.+.}-{0:0}, at: process_one_work+0x190/0x62c\n    [    4.250180] OF: /soc/sound@ec500000/ports/port@0/endpoint: Read of boolean property \u0027frame-master\u0027 with a value.\n    [    4.254094]  #1: ffff80008299bd80 ((work_completion)(\u0026entry-\u003ework)){+.+.}-{0:0}, at: process_one_work+0x1b8/0x62c\n    [    4.254109]  #2: ffff00000920c8f8\n    [    4.258345] OF: /soc/sound@ec500000/ports/port@1/endpoint: Read of boolean property \u0027bitclock-master\u0027 with a value.\n    [    4.264803]  (\u0026dev-\u003emutex){....}-{4:4}, at: __device_attach_async_helper+0x3c/0xdc\n    [    4.264820]  #3: ffff00000a50ca40 (request_class#2){+.+.}-{4:4}, at: __setup_irq+0xa0/0x690\n    [    4.264840]  #4:\n    [    4.268872] OF: /soc/sound@ec500000/ports/port@1/endpoint: Read of boolean property \u0027frame-master\u0027 with a value.\n    [    4.273275] ffff00000a50c8c8 (lock_class){....}-{2:2}, at: __setup_irq+0xc4/0x690\n    [    4.296130] renesas_sdhi_internal_dmac ee100000.mmc: mmc1 base at 0x00000000ee100000, max clock rate 200 MHz\n    [    4.304082] stack backtrace:\n    [    4.304086] CPU: 1 UID: 0 PID: 76 Comm: kworker/u8:5 Not tainted 6.13.0-rc7-arm64-renesas-05496-gd088502a519f #35\n    [    4.304092] Hardware name: Renesas Salvator-X 2nd version board based on r8a77965 (DT)\n    [    4.304097] Workqueue: async async_run_entry_fn\n    [    4.304106] Call trace:\n    [    4.304110]  show_stack+0x14/0x20 (C)\n    [    4.304122]  dump_stack_lvl+0x6c/0x90\n    [    4.304131]  dump_stack+0x14/0x1c\n    [    4.304138]  __lock_acquire+0xdfc/0x1584\n    [    4.426274]  lock_acquire+0x1c4/0x33c\n    [    4.429942]  _raw_spin_lock_irqsave+0x5c/0x80\n    [    4.434307]  gpio_rcar_config_interrupt_input_mode+0x34/0x164\n    [    4.440061]  gpio_rcar_irq_set_type+0xd4/0xd8\n    [    4.444422]  __irq_set_trigger+0x5c/0x178\n    [    4.448435]  __setup_irq+0x2e4/0x690\n    [    4.452012]  request_threaded_irq+0xc4/0x190\n    [    4.456285]  devm_request_threaded_irq+0x7c/0xf4\n    [    4.459398] ata1: link resume succeeded after 1 retries\n    [    4.460902]  mmc_gpiod_request_cd_irq+0x68/0xe0\n    [    4.470660]  mmc_start_host+0x50/0xac\n    [    4.474327]  mmc_add_host+0x80/0xe4\n    [    4.477817]  tmio_mmc_host_probe+0x2b0/0x440\n    [    4.482094]  renesas_sdhi_probe+0x488/0x6f4\n    [    4.486281]  renesas_sdhi_internal_dmac_probe+0x60/0x78\n    [    4.491509]  platform_probe+0x64/0xd8\n    [    4.495178]  really_probe+0xb8/0x2a8\n    [    4.498756]  __driver_probe_device+0x74/0x118\n    [    4.503116]  driver_probe_device+0x3c/0x154\n    [    4.507303]  __device_attach_driver+0xd4/0x160\n    [    4.511750]  bus_for_each_drv+0x84/0xe0\n    [    4.515588]  __device_attach_async_helper+0xb0/0xdc\n    [    4.520470]  async_run_entry_fn+0x30/0xd8\n    [    4.524481]  process_one_work+0x210/0x62c\n    [    4.528494]  worker_thread+0x1ac/0x340\n    [    4.532245]  kthread+0x10c/0x110\n    [    4.535476]  ret_from_fork+0x10/0x20"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-02T15:28:38.362Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/389891ac9f678baf68e13623ef1308493af4b074"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c1f36f9c9aca507d317479a3d3388150ae40a87"
        },
        {
          "url": "https://git.kernel.org/stable/c/3e300913c42041e81c5b17a970c4e078086ff2d1"
        },
        {
          "url": "https://git.kernel.org/stable/c/c10365031f16514a29c812cd909085a6e4ea4b61"
        },
        {
          "url": "https://git.kernel.org/stable/c/b42c84f9e4ec5bc2885e7fd80c79ec0352f5d2af"
        },
        {
          "url": "https://git.kernel.org/stable/c/51ef3073493e2a25dced05fdd59dfb059e7e284d"
        },
        {
          "url": "https://git.kernel.org/stable/c/f02c41f87cfe61440c18bf77d1ef0a884b9ee2b5"
        }
      ],
      "title": "gpio: rcar: Use raw_spinlock to protect register access",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21912",
    "datePublished": "2025-04-01T15:40:50.299Z",
    "dateReserved": "2024-12-29T08:45:45.787Z",
    "dateUpdated": "2026-01-02T15:28:38.362Z",
    "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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