FKIE_CVE-2026-53237

Vulnerability from fkie_nvd - Published: 2026-06-25 09:16 - Updated: 2026-06-30 14:44
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: gpio: mvebu: fix NULL pointer dereference in suspend/resume mvebu_pwm_suspend() and mvebu_pwm_resume() are called for all GPIO banks during suspend/resume, but not all banks have PWM functionality. GPIO banks without PWM have mvchip->mvpwm set to NULL. Calling mvebu_pwm_suspend() with mvpwm == NULL causes a NULL pointer dereference when it tries to access mvpwm->blink_select. Unable to handle kernel NULL pointer dereference at virtual address 00000020 when write [00000020] *pgd=00000000 Internal error: Oops: 815 [#1] PREEMPT ARM Modules linked in: CPU: 0 UID: 0 PID: 406 Comm: sh Not tainted 6.12.74-rt12-yocto-standard-g4e96f98fb7db-dirty #353 Hardware name: Marvell Armada 370/XP (Device Tree) PC is at regmap_mmio_read+0x38/0x54 LR is at regmap_mmio_read+0x38/0x54 pc : [<c05fd2ac>] lr : [<c05fd2ac>] psr: 200f0013 sp : f0c11d10 ip : 00000000 fp : c100d2f0 r10: c14fb854 r9 : 00000000 r8 : 00000000 r7 : c1799c00 r6 : 00000020 r5 : 00000020 r4 : c179c7c0 r3 : f0a231a0 r2 : 00000020 r1 : 00000020 r0 : 00000000 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 10c5387d Table: 135ec059 DAC: 00000051 Call trace: regmap_mmio_read from _regmap_bus_reg_read+0x78/0xac _regmap_bus_reg_read from _regmap_read+0x60/0x154 _regmap_read from regmap_read+0x3c/0x60 regmap_read from mvebu_gpio_suspend+0xa4/0x14c mvebu_gpio_suspend from dpm_run_callback+0x54/0x180 dpm_run_callback from device_suspend+0x124/0x630 device_suspend from dpm_suspend+0x124/0x270 dpm_suspend from dpm_suspend_start+0x64/0x6c dpm_suspend_start from suspend_devices_and_enter+0x140/0x8e8 suspend_devices_and_enter from pm_suspend+0x2fc/0x308 pm_suspend from state_store+0x6c/0xc8 state_store from kernfs_fop_write_iter+0x10c/0x1f8 kernfs_fop_write_iter from vfs_write+0x270/0x468 vfs_write from ksys_write+0x70/0xf0 ksys_write from ret_fast_syscall+0x0/0x54 Add a NULL check for mvchip->mvpwm before calling the PWM suspend/resume functions.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4ef24338eda3c7e96d6f94a988266ff16ed3985d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6136c1474db88272231573e222896e1998d34662
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7db09011ce62162d72897fc4856b4425245dfe35
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b9ad50d7505ebd48282ec3630258dc820fc85c81
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c9677a9274ffb44987ec209dc8ec9f2d34946956
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-mvebu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7db09011ce62162d72897fc4856b4425245dfe35",
              "status": "affected",
              "version": "757642f9a584e893f3f4e50c99b674ee8a3ed363",
              "versionType": "git"
            },
            {
              "lessThan": "4ef24338eda3c7e96d6f94a988266ff16ed3985d",
              "status": "affected",
              "version": "757642f9a584e893f3f4e50c99b674ee8a3ed363",
              "versionType": "git"
            },
            {
              "lessThan": "6136c1474db88272231573e222896e1998d34662",
              "status": "affected",
              "version": "757642f9a584e893f3f4e50c99b674ee8a3ed363",
              "versionType": "git"
            },
            {
              "lessThan": "c9677a9274ffb44987ec209dc8ec9f2d34946956",
              "status": "affected",
              "version": "757642f9a584e893f3f4e50c99b674ee8a3ed363",
              "versionType": "git"
            },
            {
              "lessThan": "b9ad50d7505ebd48282ec3630258dc820fc85c81",
              "status": "affected",
              "version": "757642f9a584e893f3f4e50c99b674ee8a3ed363",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-mvebu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.12"
            },
            {
              "lessThan": "4.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: mvebu: fix NULL pointer dereference in suspend/resume\n\nmvebu_pwm_suspend() and mvebu_pwm_resume() are called for all GPIO\nbanks during suspend/resume, but not all banks have PWM functionality.\nGPIO banks without PWM have mvchip-\u003emvpwm set to NULL.\n\nCalling mvebu_pwm_suspend() with mvpwm == NULL causes a NULL pointer\ndereference when it tries to access mvpwm-\u003eblink_select.\n\n  Unable to handle kernel NULL pointer dereference at virtual address 00000020 when write\n  [00000020] *pgd=00000000\n  Internal error: Oops: 815 [#1] PREEMPT ARM\n  Modules linked in:\n  CPU: 0 UID: 0 PID: 406 Comm: sh Not tainted 6.12.74-rt12-yocto-standard-g4e96f98fb7db-dirty #353\n  Hardware name: Marvell Armada 370/XP (Device Tree)\n  PC is at regmap_mmio_read+0x38/0x54\n  LR is at regmap_mmio_read+0x38/0x54\n  pc : [\u003cc05fd2ac\u003e]    lr : [\u003cc05fd2ac\u003e]    psr: 200f0013\n  sp : f0c11d10  ip : 00000000  fp : c100d2f0\n  r10: c14fb854  r9 : 00000000  r8 : 00000000\n  r7 : c1799c00  r6 : 00000020  r5 : 00000020  r4 : c179c7c0\n  r3 : f0a231a0  r2 : 00000020  r1 : 00000020  r0 : 00000000\n  Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none\n  Control: 10c5387d  Table: 135ec059  DAC: 00000051\n  Call trace:\n   regmap_mmio_read from _regmap_bus_reg_read+0x78/0xac\n   _regmap_bus_reg_read from _regmap_read+0x60/0x154\n   _regmap_read from regmap_read+0x3c/0x60\n   regmap_read from mvebu_gpio_suspend+0xa4/0x14c\n   mvebu_gpio_suspend from dpm_run_callback+0x54/0x180\n   dpm_run_callback from device_suspend+0x124/0x630\n   device_suspend from dpm_suspend+0x124/0x270\n   dpm_suspend from dpm_suspend_start+0x64/0x6c\n   dpm_suspend_start from suspend_devices_and_enter+0x140/0x8e8\n   suspend_devices_and_enter from pm_suspend+0x2fc/0x308\n   pm_suspend from state_store+0x6c/0xc8\n   state_store from kernfs_fop_write_iter+0x10c/0x1f8\n   kernfs_fop_write_iter from vfs_write+0x270/0x468\n   vfs_write from ksys_write+0x70/0xf0\n   ksys_write from ret_fast_syscall+0x0/0x54\n\nAdd a NULL check for mvchip-\u003emvpwm before calling the PWM\nsuspend/resume functions."
    }
  ],
  "id": "CVE-2026-53237",
  "lastModified": "2026-06-30T14:44:27.313",
  "metrics": {},
  "published": "2026-06-25T09:16:41.597",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4ef24338eda3c7e96d6f94a988266ff16ed3985d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6136c1474db88272231573e222896e1998d34662"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7db09011ce62162d72897fc4856b4425245dfe35"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b9ad50d7505ebd48282ec3630258dc820fc85c81"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c9677a9274ffb44987ec209dc8ec9f2d34946956"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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