Bug 2389492 (CVE-2025-38570) - CVE-2025-38570 kernel: eth: fbnic: unlink NAPIs from queues on error to open
Summary: CVE-2025-38570 kernel: eth: fbnic: unlink NAPIs from queues on error to open
Keywords:
Status: NEW
Alias: CVE-2025-38570
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-08-19 18:03 UTC by OSIDB Bzimport
Modified: 2025-08-19 22:25 UTC (History)
0 users

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Description OSIDB Bzimport 2025-08-19 18:03:52 UTC 
In the Linux kernel, the following vulnerability has been resolved:

eth: fbnic: unlink NAPIs from queues on error to open

CI hit a UaF in fbnic in the AF_XDP portion of the queues.py test.
The UaF is in the __sk_mark_napi_id_once() call in xsk_bind(),
NAPI has been freed. Looks like the device failed to open earlier,
and we lack clearing the NAPI pointer from the queue.
Comment 1 Jon Moroney 2025-08-19 22:24:18 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025081910-CVE-2025-38570-b790@gregkh/T
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