CVE-2026-43301
Severity CVSS v4.0:
Pending analysis
Type:
CWE-191
Integer Underflow (Wrap or Wraparound)
Publication date:
08/05/2026
Last modified:
15/05/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
media: chips-media: wave5: Fix PM runtime usage count underflow<br />
<br />
Replace pm_runtime_put_sync() with pm_runtime_dont_use_autosuspend() in<br />
the remove path to properly pair with pm_runtime_use_autosuspend() from<br />
probe. This allows pm_runtime_disable() to handle reference count cleanup<br />
correctly regardless of current suspend state.<br />
<br />
The driver calls pm_runtime_put_sync() unconditionally in remove, but the<br />
device may already be suspended due to autosuspend configured in probe.<br />
When autosuspend has already suspended the device, the usage count is 0,<br />
and pm_runtime_put_sync() decrements it to -1.<br />
<br />
This causes the following warning on module unload:<br />
<br />
------------[ cut here ]------------<br />
WARNING: CPU: 1 PID: 963 at kernel/kthread.c:1430<br />
kthread_destroy_worker+0x84/0x98<br />
...<br />
vdec 30210000.video-codec: Runtime PM usage count underflow!
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.8 (including) | 6.18.16 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.19 (including) | 6.19.6 (excluding) |
To consult the complete list of CPE names with products and versions, see this page



