CVE-2026-90019
usb: gadget: fix null pointer dereference in usb_put_function_instance()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: fix null pointer dereference in usb_put_function_instance() usb_put_function_instance() attempts to dereference fd inside fi struct to get mod in uvc_alloc_inst() error path. However, fd is not allocated until later in try_get_usb_function_instance() after allocating fi in uvc_alloc_inst() and thus guranteed to be null in error path. Fix this by adding a null check for fi->fd that returns if fd is null.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 16, 2026 |
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Affected Versions
Linux / Linux
0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 0fc54a00954f9f4c3e3d4ffa64a530685d99a39b 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 6e6736c049683380f5e20becde498986e9293ca4 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 3a9691fff79bcce95338435599df6d3ae433cfdc 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 7a4f4ca7ff32ae24807c83e2a06d62b13378d53c 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < d3a7fa61997db3bf6dadef4c1bd87a4fa782a817 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 5117f236e9e30744338b425395d55913c4500897 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 6e74ac5c596fd246e37eadfc354567179ccbe9aa
Linux / Linux
3.9
References
git.kernel.org: https://git.kernel.org/stable/c/0fc54a00954f9f4c3e3d4ffa64a530685d99a39b git.kernel.org: https://git.kernel.org/stable/c/6e6736c049683380f5e20becde498986e9293ca4 git.kernel.org: https://git.kernel.org/stable/c/3a9691fff79bcce95338435599df6d3ae433cfdc git.kernel.org: https://git.kernel.org/stable/c/7a4f4ca7ff32ae24807c83e2a06d62b13378d53c git.kernel.org: https://git.kernel.org/stable/c/6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0 git.kernel.org: https://git.kernel.org/stable/c/d3a7fa61997db3bf6dadef4c1bd87a4fa782a817 git.kernel.org: https://git.kernel.org/stable/c/5117f236e9e30744338b425395d55913c4500897 git.kernel.org: https://git.kernel.org/stable/c/6e74ac5c596fd246e37eadfc354567179ccbe9aa