CVE-2025-38270
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-07-10

Last updated on: 2025-11-20

Assigner: kernel.org

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.
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Meta Information
Published
2025-07-10
Last Modified
2025-11-20
Generated
2026-05-07
AI Q&A
2025-07-10
EPSS Evaluated
2026-05-05
NVD
CVE-2025-38270
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.16
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-NVD-CWE-noinfo
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability involves the Linux kernel's netdevsim driver, which supports netpoll. The issue is that the driver incorrectly calls napi_complete() from netpoll, which may not be scheduled properly. This can cause a warning or error in the kernel related to napi_complete_done(), indicating that netpoll prematurely stole the SCHED bit, leading to potential instability or unexpected behavior in network packet processing.


How can this vulnerability impact me? :

This vulnerability can cause warnings or errors in the Linux kernel related to network packet processing, potentially leading to instability or unexpected behavior in systems using the netdevsim driver with netpoll. This could affect network performance or reliability on affected systems.


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