CVE-2025-21803 (GCVE-0-2025-21803)

Vulnerability from cvelistv5 – Published: 2025-02-27 20:00 – Updated: 2026-05-11 21:06
VLAI
Title
LoongArch: Fix warnings during S3 suspend
Summary
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix warnings during S3 suspend The enable_gpe_wakeup() function calls acpi_enable_all_wakeup_gpes(), and the later one may call the preempt_schedule_common() function, resulting in a thread switch and causing the CPU to be in an interrupt enabled state after the enable_gpe_wakeup() function returns, leading to the warnings as follow. [ C0] WARNING: ... at kernel/time/timekeeping.c:845 ktime_get+0xbc/0xc8 [ C0] ... [ C0] Call Trace: [ C0] [<90000000002243b4>] show_stack+0x64/0x188 [ C0] [<900000000164673c>] dump_stack_lvl+0x60/0x88 [ C0] [<90000000002687e4>] __warn+0x8c/0x148 [ C0] [<90000000015e9978>] report_bug+0x1c0/0x2b0 [ C0] [<90000000016478e4>] do_bp+0x204/0x3b8 [ C0] [<90000000025b1924>] exception_handlers+0x1924/0x10000 [ C0] [<9000000000343bbc>] ktime_get+0xbc/0xc8 [ C0] [<9000000000354c08>] tick_sched_timer+0x30/0xb0 [ C0] [<90000000003408e0>] __hrtimer_run_queues+0x160/0x378 [ C0] [<9000000000341f14>] hrtimer_interrupt+0x144/0x388 [ C0] [<9000000000228348>] constant_timer_interrupt+0x38/0x48 [ C0] [<90000000002feba4>] __handle_irq_event_percpu+0x64/0x1e8 [ C0] [<90000000002fed48>] handle_irq_event_percpu+0x20/0x80 [ C0] [<9000000000306b9c>] handle_percpu_irq+0x5c/0x98 [ C0] [<90000000002fd4a0>] generic_handle_domain_irq+0x30/0x48 [ C0] [<9000000000d0c7b0>] handle_cpu_irq+0x70/0xa8 [ C0] [<9000000001646b30>] handle_loongarch_irq+0x30/0x48 [ C0] [<9000000001646bc8>] do_vint+0x80/0xe0 [ C0] [<90000000002aea1c>] finish_task_switch.isra.0+0x8c/0x2a8 [ C0] [<900000000164e34c>] __schedule+0x314/0xa48 [ C0] [<900000000164ead8>] schedule+0x58/0xf0 [ C0] [<9000000000294a2c>] worker_thread+0x224/0x498 [ C0] [<900000000029d2f0>] kthread+0xf8/0x108 [ C0] [<9000000000221f28>] ret_from_kernel_thread+0xc/0xa4 [ C0] [ C0] ---[ end trace 0000000000000000 ]--- The root cause is acpi_enable_all_wakeup_gpes() uses a mutex to protect acpi_hw_enable_all_wakeup_gpes(), and acpi_ut_acquire_mutex() may cause a thread switch. Since there is no longer concurrent execution during loongarch_acpi_suspend(), we can call acpi_hw_enable_all_wakeup_gpes() directly in enable_gpe_wakeup(). The solution is similar to commit 22db06337f590d01 ("ACPI: sleep: Avoid breaking S3 wakeup due to might_sleep()").
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 CPE status
Linux Linux Affected: 366bb35a8e48198cefcd3484ac6b2374d1347873 , < d49ab6857d98266010f3446c9c2063014db5b654 (git)
Affected: 366bb35a8e48198cefcd3484ac6b2374d1347873 , < 194d26a5a43c26dc98a9b4e2c1d521dcb84dd1bf (git)
Affected: 366bb35a8e48198cefcd3484ac6b2374d1347873 , < 8682a71a7f6de7c683f31b4334b04e19685a05f9 (git)
Affected: 366bb35a8e48198cefcd3484ac6b2374d1347873 , < 26c0a2d93af55d30a46d5f45d3e9c42cde730168 (git)
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Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.76 , ≤ 6.6.* (semver)
Unaffected: 6.12.13 , ≤ 6.12.* (semver)
Unaffected: 6.13.2 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
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          "programFiles": [
            "arch/loongarch/power/platform.c",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Fix warnings during S3 suspend\n\nThe enable_gpe_wakeup() function calls acpi_enable_all_wakeup_gpes(),\nand the later one may call the preempt_schedule_common() function,\nresulting in a thread switch and causing the CPU to be in an interrupt\nenabled state after the enable_gpe_wakeup() function returns, leading\nto the warnings as follow.\n\n[ C0] WARNING: ... at kernel/time/timekeeping.c:845 ktime_get+0xbc/0xc8\n[ C0]          ...\n[ C0] Call Trace:\n[ C0] [\u003c90000000002243b4\u003e] show_stack+0x64/0x188\n[ C0] [\u003c900000000164673c\u003e] dump_stack_lvl+0x60/0x88\n[ C0] [\u003c90000000002687e4\u003e] __warn+0x8c/0x148\n[ C0] [\u003c90000000015e9978\u003e] report_bug+0x1c0/0x2b0\n[ C0] [\u003c90000000016478e4\u003e] do_bp+0x204/0x3b8\n[ C0] [\u003c90000000025b1924\u003e] exception_handlers+0x1924/0x10000\n[ C0] [\u003c9000000000343bbc\u003e] ktime_get+0xbc/0xc8\n[ C0] [\u003c9000000000354c08\u003e] tick_sched_timer+0x30/0xb0\n[ C0] [\u003c90000000003408e0\u003e] __hrtimer_run_queues+0x160/0x378\n[ C0] [\u003c9000000000341f14\u003e] hrtimer_interrupt+0x144/0x388\n[ C0] [\u003c9000000000228348\u003e] constant_timer_interrupt+0x38/0x48\n[ C0] [\u003c90000000002feba4\u003e] __handle_irq_event_percpu+0x64/0x1e8\n[ C0] [\u003c90000000002fed48\u003e] handle_irq_event_percpu+0x20/0x80\n[ C0] [\u003c9000000000306b9c\u003e] handle_percpu_irq+0x5c/0x98\n[ C0] [\u003c90000000002fd4a0\u003e] generic_handle_domain_irq+0x30/0x48\n[ C0] [\u003c9000000000d0c7b0\u003e] handle_cpu_irq+0x70/0xa8\n[ C0] [\u003c9000000001646b30\u003e] handle_loongarch_irq+0x30/0x48\n[ C0] [\u003c9000000001646bc8\u003e] do_vint+0x80/0xe0\n[ C0] [\u003c90000000002aea1c\u003e] finish_task_switch.isra.0+0x8c/0x2a8\n[ C0] [\u003c900000000164e34c\u003e] __schedule+0x314/0xa48\n[ C0] [\u003c900000000164ead8\u003e] schedule+0x58/0xf0\n[ C0] [\u003c9000000000294a2c\u003e] worker_thread+0x224/0x498\n[ C0] [\u003c900000000029d2f0\u003e] kthread+0xf8/0x108\n[ C0] [\u003c9000000000221f28\u003e] ret_from_kernel_thread+0xc/0xa4\n[ C0]\n[ C0] ---[ end trace 0000000000000000 ]---\n\nThe root cause is acpi_enable_all_wakeup_gpes() uses a mutex to protect\nacpi_hw_enable_all_wakeup_gpes(), and acpi_ut_acquire_mutex() may cause\na thread switch. Since there is no longer concurrent execution during\nloongarch_acpi_suspend(), we can call acpi_hw_enable_all_wakeup_gpes()\ndirectly in enable_gpe_wakeup().\n\nThe solution is similar to commit 22db06337f590d01 (\"ACPI: sleep: Avoid\nbreaking S3 wakeup due to might_sleep()\")."
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        {
          "url": "https://git.kernel.org/stable/c/26c0a2d93af55d30a46d5f45d3e9c42cde730168"
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      "title": "LoongArch: Fix warnings during S3 suspend",
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    "datePublished": "2025-02-27T20:00:56.932Z",
    "dateReserved": "2024-12-29T08:45:45.771Z",
    "dateUpdated": "2026-05-11T21:06:50.207Z",
    "state": "PUBLISHED"
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                  "include/acpi/acpixf.h"
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Fix warnings during S3 suspend\n\nThe enable_gpe_wakeup() function calls acpi_enable_all_wakeup_gpes(),\nand the later one may call the preempt_schedule_common() function,\nresulting in a thread switch and causing the CPU to be in an interrupt\nenabled state after the enable_gpe_wakeup() function returns, leading\nto the warnings as follow.\n\n[ C0] WARNING: ... at kernel/time/timekeeping.c:845 ktime_get+0xbc/0xc8\n[ C0]          ...\n[ C0] Call Trace:\n[ C0] [\u003c90000000002243b4\u003e] show_stack+0x64/0x188\n[ C0] [\u003c900000000164673c\u003e] dump_stack_lvl+0x60/0x88\n[ C0] [\u003c90000000002687e4\u003e] __warn+0x8c/0x148\n[ C0] [\u003c90000000015e9978\u003e] report_bug+0x1c0/0x2b0\n[ C0] [\u003c90000000016478e4\u003e] do_bp+0x204/0x3b8\n[ C0] [\u003c90000000025b1924\u003e] exception_handlers+0x1924/0x10000\n[ C0] [\u003c9000000000343bbc\u003e] ktime_get+0xbc/0xc8\n[ C0] [\u003c9000000000354c08\u003e] tick_sched_timer+0x30/0xb0\n[ C0] [\u003c90000000003408e0\u003e] __hrtimer_run_queues+0x160/0x378\n[ C0] [\u003c9000000000341f14\u003e] hrtimer_interrupt+0x144/0x388\n[ C0] [\u003c9000000000228348\u003e] constant_timer_interrupt+0x38/0x48\n[ C0] [\u003c90000000002feba4\u003e] __handle_irq_event_percpu+0x64/0x1e8\n[ C0] [\u003c90000000002fed48\u003e] handle_irq_event_percpu+0x20/0x80\n[ C0] [\u003c9000000000306b9c\u003e] handle_percpu_irq+0x5c/0x98\n[ C0] [\u003c90000000002fd4a0\u003e] generic_handle_domain_irq+0x30/0x48\n[ C0] [\u003c9000000000d0c7b0\u003e] handle_cpu_irq+0x70/0xa8\n[ C0] [\u003c9000000001646b30\u003e] handle_loongarch_irq+0x30/0x48\n[ C0] [\u003c9000000001646bc8\u003e] do_vint+0x80/0xe0\n[ C0] [\u003c90000000002aea1c\u003e] finish_task_switch.isra.0+0x8c/0x2a8\n[ C0] [\u003c900000000164e34c\u003e] __schedule+0x314/0xa48\n[ C0] [\u003c900000000164ead8\u003e] schedule+0x58/0xf0\n[ C0] [\u003c9000000000294a2c\u003e] worker_thread+0x224/0x498\n[ C0] [\u003c900000000029d2f0\u003e] kthread+0xf8/0x108\n[ C0] [\u003c9000000000221f28\u003e] ret_from_kernel_thread+0xc/0xa4\n[ C0]\n[ C0] ---[ end trace 0000000000000000 ]---\n\nThe root cause is acpi_enable_all_wakeup_gpes() uses a mutex to protect\nacpi_hw_enable_all_wakeup_gpes(), and acpi_ut_acquire_mutex() may cause\na thread switch. Since there is no longer concurrent execution during\nloongarch_acpi_suspend(), we can call acpi_hw_enable_all_wakeup_gpes()\ndirectly in enable_gpe_wakeup().\n\nThe solution is similar to commit 22db06337f590d01 (\"ACPI: sleep: Avoid\nbreaking S3 wakeup due to might_sleep()\")."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: LoongArch: Se corrigen advertencias durante la suspensi\u00f3n de S3 La funci\u00f3n enable_gpe_wakeup() llama a acpi_enable_all_wakeup_gpes(), y la \u00faltima puede llamar a la funci\u00f3n preempt_schedule_common(), lo que da como resultado un cambio de hilo y hace que la CPU est\u00e9 en un estado de interrupci\u00f3n habilitada despu\u00e9s de que la funci\u00f3n enable_gpe_wakeup() regrese, lo que genera las advertencias siguientes. [ C0] ADVERTENCIA: ... en kernel/time/timekeeping.c:845 ktime_get+0xbc/0xc8 [ C0] ... [ C0] Call Trace: [ C0] [\u0026lt;90000000002243b4\u0026gt;] show_stack+0x64/0x188 [ C0] [\u0026lt;900000000164673c\u0026gt;] dump_stack_lvl+0x60/0x88 [ C0] [\u0026lt;90000000002687e4\u0026gt;] __warn+0x8c/0x148 [ C0] [\u0026lt;90000000015e9978\u0026gt;] report_bug+0x1c0/0x2b0 [ C0] [\u0026lt;90000000016478e4\u0026gt;] do_bp+0x204/0x3b8 [ C0] [\u0026lt;90000000025b1924\u0026gt;] exception_handlers+0x1924/0x10000 [ C0] [\u0026lt;9000000000343bbc\u0026gt;] ktime_get+0xbc/0xc8 [ C0] [\u0026lt;9000000000354c08\u0026gt;] tick_sched_timer+0x30/0xb0 [ C0] [\u0026lt;90000000003408e0\u0026gt;] __hrtimer_run_queues+0x160/0x378 [ C0] [\u0026lt;9000000000341f14\u0026gt;] hrtimer_interrupt+0x144/0x388 [ C0] [\u0026lt;9000000000228348\u0026gt;] constant_timer_interrupt+0x38/0x48 [ C0] [\u0026lt;90000000002feba4\u0026gt;] __handle_irq_event_percpu+0x64/0x1e8 [ C0] [\u0026lt;90000000002fed48\u0026gt;] handle_irq_event_percpu+0x20/0x80 [ C0] [\u0026lt;9000000000306b9c\u0026gt;] handle_percpu_irq+0x5c/0x98 [ C0] [\u0026lt;90000000002fd4a0\u0026gt;] generic_handle_domain_irq+0x30/0x48 [ C0] [\u0026lt;9000000000d0c7b0\u0026gt;] handle_cpu_irq+0x70/0xa8 [ C0] [\u0026lt;9000000001646b30\u0026gt;] handle_loongarch_irq+0x30/0x48 [ C0] [\u0026lt;9000000001646bc8\u0026gt;] do_vint+0x80/0xe0 [ C0] [\u0026lt;90000000002aea1c\u0026gt;] finish_task_switch.isra.0+0x8c/0x2a8 [ C0] [\u0026lt;900000000164e34c\u0026gt;] __schedule+0x314/0xa48 [ C0] [\u0026lt;900000000164ead8\u0026gt;] schedule+0x58/0xf0 [ C0] [\u0026lt;9000000000294a2c\u0026gt;] worker_thread+0x224/0x498 [ C0] [\u0026lt;900000000029d2f0\u0026gt;] kthread+0xf8/0x108 [ C0] [\u0026lt;9000000000221f28\u0026gt;] ret_from_kernel_thread+0xc/0xa4 [ C0] [ C0] ---[ end trace 0000000000000000 ]--- The root cause is acpi_enable_all_wakeup_gpes() uses a mutex to protect acpi_hw_enable_all_wakeup_gpes(), and acpi_ut_acquire_mutex() may cause a thread switch. Dado que ya no hay ejecuci\u00f3n simult\u00e1nea durante loongarch_acpi_suspend(), podemos llamar a acpi_hw_enable_all_wakeup_gpes() directamente en enable_gpe_wakeup(). La soluci\u00f3n es similar a el commit 22db06337f590d01 (\"ACPI: sleep: evitar interrumpir la activaci\u00f3n de S3 debido a might_sleep()\")."
          }
        ],
        "id": "CVE-2025-21803",
        "lastModified": "2026-06-17T08:44:19.080",
        "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": "2025-02-27T20:16:02.937",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/194d26a5a43c26dc98a9b4e2c1d521dcb84dd1bf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/26c0a2d93af55d30a46d5f45d3e9c42cde730168"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/8682a71a7f6de7c683f31b4334b04e19685a05f9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/d49ab6857d98266010f3446c9c2063014db5b654"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:18:00+00:00",
      "cve": "CVE-2025-21803",
      "id": "CVE-2025-21803",
      "initial_release_date": "2025-02-27T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: LoongArch: Fix warnings during S3 suspend",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-21803.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T01:27:36Z",
      "cve": "CVE-2025-21803",
      "id": "CVE-2025-21803",
      "initial_release_date": "2025-03-01T02:52:35Z",
      "product_status:known_not_affected": "497",
      "product_status:recommended": "78",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-21803",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-21803.json",
      "version": "33"
    }
  }
}



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