CVE-2025-38270

Published: July 12, 2025Last modified: July 12, 2025

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.

Status

References

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