CVE-2025-38570

HIGH

Linux Kernel 6.14-6.15.9, 6.16.0 - Use-After-Free in fbnic NAPI Queue Handling

Title source: llm

Description

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.

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/21d3f8441c7f317b93ba6a8029610c8b7e3773db

Patch

https://git.kernel.org/stable/c/4b59f9deff3bdb52b223c85048f1d2924803b817

Patch

https://git.kernel.org/stable/c/4b31bcb025cb497da2b01f87173108ff32d350d2

Scores

CVSS v3 7.8

EPSS 0.0015

EPSS Percentile 4.6%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-416

Status published

Products (11)

linux/Kernel 6.14.0 - 6.15.10linux

linux/Kernel 6.16.0 - 6.16.1linux

Linux/Linux < 6.14

Linux/Linux 557d02238e05eb66b9aba9a1f90f3a2131c6c887 - 21d3f8441c7f317b93ba6a8029610c8b7e3773db

Linux/Linux 557d02238e05eb66b9aba9a1f90f3a2131c6c887 - 4b31bcb025cb497da2b01f87173108ff32d350d2

Linux/Linux 557d02238e05eb66b9aba9a1f90f3a2131c6c887 - 4b59f9deff3bdb52b223c85048f1d2924803b817

Linux/Linux 6.14

Linux/Linux 6.15.10 - 6.15.*

Linux/Linux 6.16.1 - 6.16.*

Linux/Linux 6.17

... and 1 more

Published Aug 19, 2025

Tracked Since Feb 18, 2026