CVE-2025-38270
High
Description
In the Linux kernel, the following vulnerability has been resolved: net: drv: netdevsim: don't napi_complete() from netpoll netdevsim supports netpoll. Make sure we don't call napi_complete() from it, since it may not be scheduled. Breno reports hitting a warning in napi_complete_done(): WARNING: CPU: 14 PID: 104 at net/core/dev.c:6592 napi_complete_done+0x2cc/0x560 __napi_poll+0x2d8/0x3a0 handle_softirqs+0x1fe/0x710 This is presumably after netpoll stole the SCHED bit prematurely.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedJul 10, 2025
First seenJul 10, 2025
How to fix
Update
- linux linux_kernel6.12.34, 6.15.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.10 ≤ v < 6.12.34, 6.13 ≤ v < 6.15.3, 6.16 | 6.12.34, 6.15.3 |
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