Bug 2397577 (CVE-2025-39875) - CVE-2025-39875 kernel: igb: Fix NULL pointer dereference in ethtool loopback test
Summary: CVE-2025-39875 kernel: igb: Fix NULL pointer dereference in ethtool loopback ...
Keywords:
Status: NEW
Alias: CVE-2025-39875
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-09-23 07:02 UTC by OSIDB Bzimport
Modified: 2025-09-23 17:01 UTC (History)
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Description OSIDB Bzimport 2025-09-23 07:02:50 UTC
In the Linux kernel, the following vulnerability has been resolved:

igb: Fix NULL pointer dereference in ethtool loopback test

The igb driver currently causes a NULL pointer dereference when executing
the ethtool loopback test. This occurs because there is no associated
q_vector for the test ring when it is set up, as interrupts are typically
not added to the test rings.

Since commit 5ef44b3cb43b removed the napi_id assignment in
__xdp_rxq_info_reg(), there is no longer a need to pass a napi_id to it.
Therefore, simply use 0 as the last parameter.


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