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

usb: gadget: udc: Fix use-after-free in gadget_match_driver

The udc structure acts as the management structure for the gadget,
but their lifecycles are decoupled. A race condition exists where
usb_del_gadget() frees the udc memory (e.g., via mode-switch work)
while gadget_match_driver() concurrently accesses the freed udc memory
(e.g., via configfs), causing a Use-After-Free (UAF) that triggers a
NULL pointer dereference when the freed memory is zeroed:

[39430.908615][ T1171] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
[39430.911397][ T1171] pc : __pi_strcmp+0x20/0x140
[39430.911441][ T1171] lr : gadget_match_driver+0x34/0x60
...
[39430.911890][ T1171]  usb_gadget_register_driver_owner+0x50/0xf8
[39430.911910][ T1171]  gadget_dev_desc_UDC_store+0xf4/0x140
[39430.931308][ T1171]  configfs_write_iter+0xec/0x134

[39430.957058][ T1171] Workqueue: events_freezable __dwc3_set_mode
[39430.957287][ T1171]  dwc3_gadget_exit+0x34/0x8c
[39430.957304][ T1171]  __dwc3_set_mode+0xc0/0x664

Fix this by ensuring the udc structure remains allocated until the
gadget is released. To achieve this, introduce a new
usb_gadget_release() routine to the core. When the gadget is added,
usb_add_gadget() stores the gadget's release routine in the udc
structure and takes a reference to the udc. When the gadget is
released, usb_gadget_release() drops the reference to the udc and
then calls the gadget's release routine.

https://git.kernel.org/stable/c/50eeb8e8a4f389efc91b93cff14a683e714ec194

https://git.kernel.org/stable/c/54fa390aae393eb130f307a85562e3001cc39a52

https://git.kernel.org/stable/c/67e511d2989eb1c8c588b599ce2fcc6bb8e6f7ea

https://git.kernel.org/stable/c/7a5214dae906d9f58e07bc4995e8181ee74439f4

https://git.kernel.org/stable/c/b52476a83d9e12df00765359d728a875b128bef1

https://git.kernel.org/stable/c/d026f71df141c9b064ff32a78af5391a31ef75c2

https://git.kernel.org/stable/c/f845852a5a8914277031f47d8de0f350fef52405

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/usb/gadget/udc/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"f845852a5a8914277031f47d8de0f350fef52405","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"50eeb8e8a4f389efc91b93cff14a683e714ec194","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"7a5214dae906d9f58e07bc4995e8181ee74439f4","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"d026f71df141c9b064ff32a78af5391a31ef75c2","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"b52476a83d9e12df00765359d728a875b128bef1","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"54fa390aae393eb130f307a85562e3001cc39a52","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"67e511d2989eb1c8c588b599ce2fcc6bb8e6f7ea","versionType":"git","status":"affected"},{"version":"0","lessThan":"5.15.212","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.1.178","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.6.145","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.12.96","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.18.39","versionType":"semver","status":"affected"},{"version":"0","lessThan":"7.1.4","versionType":"semver","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/usb/gadget/udc/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.15.212","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.96","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.39","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.4","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc3","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]