Bug 2502426 (CVE-2026-63998)

Summary: CVE-2026-63998 kernel: ethtool: module: call ethnl_ops_complete() on module flash errors
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's ethtool module. When attempting to flash transceiver modules' firmware, a validation failure could cause the `ethnl_ops_complete()` function to be skipped. This oversight means that an operation initiated by `ethnl_ops_begin()` might not be properly concluded, potentially leading to unexpected behavior or resource management issues within the kernel.
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Description OSIDB Bzimport 2026-07-19 16:07:30 UTC
In the Linux kernel, the following vulnerability has been resolved:

ethtool: module: call ethnl_ops_complete() on module flash errors

When validate() fails we are skipping over ethnl_ops_complete()
even tho we already called ethnl_ops_begin().

Comment 1 Mauro Matteo Cascella 2026-07-21 17:01:47 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026071906-CVE-2026-63998-e5c0@gregkh/T