Bug 2396501 (CVE-2023-53442)

Summary: CVE-2023-53442 kernel: ice: Block switchdev mode when ADQ is active and vice versa
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-09-18 17:01:52 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ice: Block switchdev mode when ADQ is active and vice versa

ADQ and switchdev are not supported simultaneously. Enabling both at the
same time can result in nullptr dereference.

To prevent this, check if ADQ is active when changing devlink mode to
switchdev mode, and check if switchdev is active when enabling ADQ.
Comment 1 Keith Grant 2025-09-18 20:27:30 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091859-CVE-2023-53442-8a1f@gregkh/T