CVE-2026-53237gpio: mvebu: fix NULL pointer dereference in suspend/resume
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 16 days later
· 16 days later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 757642f9a584e893f3f4e50c99b674ee8a3ed363 – < 3cb53f89049c3769e102ac5b7692e679a1d45510
- affected 757642f9a584e893f3f4e50c99b674ee8a3ed363 – < 7db09011ce62162d72897fc4856b4425245dfe35
- affected 757642f9a584e893f3f4e50c99b674ee8a3ed363 – < 4ef24338eda3c7e96d6f94a988266ff16ed3985d
- affected 757642f9a584e893f3f4e50c99b674ee8a3ed363 – < 6136c1474db88272231573e222896e1998d34662
- affected 757642f9a584e893f3f4e50c99b674ee8a3ed363 – < c9677a9274ffb44987ec209dc8ec9f2d34946956
- affected 757642f9a584e893f3f4e50c99b674ee8a3ed363 – < b9ad50d7505ebd48282ec3630258dc820fc85c81
- affected 4.12
- unaffected < 4.12
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.143 – ≤ 6.6.*
- unaffected 6.12.94 – ≤ 6.12.*
- unaffected 6.18.36 – ≤ 6.18.*
- unaffected 7.0.13 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References6
- https://git.kernel.org/stable/c/3cb53f89049c3769e102ac5b7692e679a1d45510 (opens in a new tab)
- https://git.kernel.org/stable/c/7db09011ce62162d72897fc4856b4425245dfe35 (opens in a new tab)
- https://git.kernel.org/stable/c/4ef24338eda3c7e96d6f94a988266ff16ed3985d (opens in a new tab)
- https://git.kernel.org/stable/c/6136c1474db88272231573e222896e1998d34662 (opens in a new tab)
- https://git.kernel.org/stable/c/c9677a9274ffb44987ec209dc8ec9f2d34946956 (opens in a new tab)
- https://git.kernel.org/stable/c/b9ad50d7505ebd48282ec3630258dc820fc85c81 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-39328 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-53237)Record last updated .