Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: legacy: ncm: Fix NPE in gncm_bind Commit 56a512a9b410 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind") deferred the allocation of the net_device. This change leads to a NULL pointer dereference in the legacy NCM driver as it attempts to access the net_device before it's fully instantiated. Store the provided qmult, host_addr, and dev_addr into the struct ncm_opts->net_opts during gncm_bind(). These values will be properly applied to the net_device when it is allocated and configured later in the binding process by the NCM function driver.
References
- https://git.kernel.org/stable/c/b23e86a3a15803c3dcb24701285f73e65099fdf9
- https://git.kernel.org/stable/c/be5738d19bed244ede84da45bc45395bcb1d99e0
- https://git.kernel.org/stable/c/fde0634ad9856b3943a2d1a8cc8de174a63ac840
FAQ
What is CVE-2026-43422?
CVE-2026-43422 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: usb: legacy: ncm: Fix NPE in gncm_bind Commit 56a512a9b410 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind") def...
How severe is CVE-2026-43422?
CVSS scoring is not yet available for CVE-2026-43422. Check NVD for updates.
Is there a patch for CVE-2026-43422?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.