CVE-2026-90019

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 0fc54a00954f9f4c3e3d4ffa64a530685d99a39baffected
LinuxLinux0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 6e6736c049683380f5e20becde498986e9293ca4affected
LinuxLinux0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 3a9691fff79bcce95338435599df6d3ae433cfdcaffected
LinuxLinux0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 7a4f4ca7ff32ae24807c83e2a06d62b13378d53caffected
LinuxLinux0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0affected
LinuxLinux0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < d3a7fa61997db3bf6dadef4c1bd87a4fa782a817affected
LinuxLinux0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 5117f236e9e30744338b425395d55913c4500897affected
LinuxLinux0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 < 6e74ac5c596fd246e37eadfc354567179ccbe9aaaffected
LinuxLinux3.9affected
LinuxLinux0 < 3.9unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.51 <= 6.18.*unaffected
LinuxLinux7.2.5 <= 7.2.*unaffected
LinuxLinux7.3-rc2 <= *unaffected

Weaknesses

References