Bug 2468075 (CVE-2026-43295)

Summary: CVE-2026-43295 kernel: rapidio: replace rio_free_net() with kfree() in rio_scan_alloc_net()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's rapidio subsystem. When memory allocation for `idtab` fails within the `rio_scan_alloc_net()` function, the network object is not correctly freed, resulting in a dangling pointer. This improper memory management could lead to system instability or a denial of service.
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Description OSIDB Bzimport 2026-05-08 14:03:12 UTC 
In the Linux kernel, the following vulnerability has been resolved:

rapidio: replace rio_free_net() with kfree() in rio_scan_alloc_net()

When idtab allocation fails, net is not registered with rio_add_net() yet,
so kfree(net) is sufficient to release the memory.  Set mport->net to NULL
to avoid dangling pointer.
Comment 1 Keith Grant 2026-05-08 18:20:10 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050854-CVE-2026-43295-f6c5@gregkh/T