CVE-2025-38270

net: drv: netdevsim: don't napi_complete() from netpoll

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.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/a8ff2e362d901200a1075c3ca9c56d9c7bbef389
https://git.kernel.org/stable/c/6837dd877270c57689bd866de9f3de14172c2439
https://git.kernel.org/stable/c/1264971017b4d7141352a7fe29021bdfce5d885d

Frequently Asked Questions

What is the severity of CVE-2025-38270?: CVE-2025-38270 has not yet been assigned a CVSS score.
How to fix CVE-2025-38270?: To fix CVE-2025-38270, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-38270 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38270 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-38270?: CVE-2025-38270 affects Linux Linux, Linux Linux.

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