CVE-2026-31621

Summary

In the Linux kernel, the following vulnerability has been resolved:

bnge: return after auxiliary_device_uninit() in error path

When auxiliary_device_add() fails, the error block calls auxiliary_device_uninit() but does not return. The uninit drops the last reference and synchronously runs bnge_aux_dev_release(), which sets bd->auxr_dev = NULL and frees the underlying object. The subsequent bd->auxr_dev->net = bd->netdev then dereferences NULL, which is not a good thing to have happen when trying to clean up from an error.

Add the missing return, as the auxiliary bus documentation states is a requirement (seems that LLM tools read documentation better than humans do…)

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/38c383ec6d37f4b5597f8e6a1f5c2ab31ea01d3a
• https://git.kernel.org/stable/c/87bc3557c708110d83086bf091328271298a44e3
• https://git.kernel.org/stable/c/8b0c25528cb64f71a73b5c0d49cbbcb68540a4ce

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