CVE-2026-43229

MEDIUM EPSS 2.7%
Published May 6, 20261mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
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Published May 6, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥6.8  –  <6.12.75
linuxlinux_kernel*≥6.13  –  <6.18.16
linuxlinux_kernel*≥6.19  –  <6.19.6

References 4

  • git.kernel.org https://git.kernel.org/stable/c/526816f2e331954d80fed8b37fa94efbbdde2b8d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b73d85231d5b1400a4fa5046cdac6c4d7cc6d969
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b74cedac643b02aefa7da881b58a3792859d9748
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc2b7deae740a3ed138fb7ae17c97fa4055cfc5f
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/526816f2e331954d80fed8b37fa94efbbdde2b8d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b73d85231d5b1400a4fa5046cdac6c4d7cc6d969
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b74cedac643b02aefa7da881b58a3792859d9748
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc2b7deae740a3ed138fb7ae17c97fa4055cfc5f
    Patch