CVE-2025-38270
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
10/07/2025
Last modified:
10/07/2025
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
net: drv: netdevsim: don&#39;t napi_complete() from netpoll<br />
<br />
netdevsim supports netpoll. Make sure we don&#39;t call napi_complete()<br />
from it, since it may not be scheduled. Breno reports hitting a<br />
warning in napi_complete_done():<br />
<br />
WARNING: CPU: 14 PID: 104 at net/core/dev.c:6592 napi_complete_done+0x2cc/0x560<br />
__napi_poll+0x2d8/0x3a0<br />
handle_softirqs+0x1fe/0x710<br />
<br />
This is presumably after netpoll stole the SCHED bit prematurely.