CVE-2026-43422
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | b62076e780a2121903ecf9ffdfb89c64647cb7da < be5738d19bed244ede84da45bc45395bcb1d99e0 | affected |
| Linux | Linux | 188338c1827842f898761a939669cf345bdf07e2 < b23e86a3a15803c3dcb24701285f73e65099fdf9 | affected |
| Linux | Linux | 56a512a9b4107079f68701e7d55da8507eb963d9 < fde0634ad9856b3943a2d1a8cc8de174a63ac840 | affected |
| Linux | Linux | 6.18.17 < 6.18.19 | affected |
| Linux | Linux | 6.19.7 < 6.19.9 | affected |
Weaknesses
References
- https://git.kernel.org/stable/c/be5738d19bed244ede84da45bc45395bcb1d99e0
- https://git.kernel.org/stable/c/b23e86a3a15803c3dcb24701285f73e65099fdf9
- https://git.kernel.org/stable/c/fde0634ad9856b3943a2d1a8cc8de174a63ac840
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