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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-43229 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: media: chips-media: wave5: Fix device cleanup order to prevent kernel panic Move video device unregistration to the beginning of the remove function to ensure all video operations are stopped before cleaning up the worker thread and disabling PM runtime. This prevents hardware register access after the device has been powered down. In polling mode, the hrtimer periodically triggers wave5_vpu_timer_callback() which queues work to the kthread worker. The worker executes wave5_vpu_irq_work_fn() which reads hardware registers via wave5_vdi_read_register(). The original cleanup order disabled PM runtime and powered down hardware before unregistering video devices. When autosuspend triggers and powers off the hardware, the video devices are still registered and the worker thread can still be triggered by the hrtimer, causing it to attempt reading registers from powered-off hardware. This results in a bus error (synchronous external abort) and kernel panic. This causes random kernel panics during encoding operations: Internal error: synchronous external abort: 0000000096000010 [#1] PREEMPT SMP Modules linked in: wave5 rpmsg_ctrl rpmsg_char ... CPU: 0 UID: 0 PID: 1520 Comm: vpu_irq_thread Tainted: G M W pc : wave5_vdi_read_register+0x10/0x38 [wave5] lr : wave5_vpu_irq_work_fn+0x28/0x60 [wave5] Call trace: wave5_vdi_read_register+0x10/0x38 [wave5] kthread_worker_fn+0xd8/0x238 kthread+0x104/0x120 ret_from_fork+0x10/0x20 Code: aa1e03e9 d503201f f9416800 8b214000 (b9400000) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: synchronous external abort: Fatal exception


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/526816f2e331954d80fed8b37fa94efbbdde2b8d kernel.org
https://git.kernel.org/stable/c/b73d85231d5b1400a4fa5046cdac6c4d7cc6d969 kernel.org
https://git.kernel.org/stable/c/b74cedac643b02aefa7da881b58a3792859d9748 kernel.org
https://git.kernel.org/stable/c/dc2b7deae740a3ed138fb7ae17c97fa4055cfc5f kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-43229
NVD Published Date:
05/06/2026
NVD Last Modified:
05/06/2026
Source:
kernel.org