Description
In the Linux kernel, the following vulnerability has been resolved: USB: gadget: Fix the memory leak in raw_gadget driver Currently, increasing raw_dev->count happens before invoke the raw_queue_event(), if the raw_queue_event() return error, invoke raw_release() will not trigger the dev_free() to be called. [ 268.905865][ T5067] raw-gadget.0 gadget.0: failed to queue event [ 268.912053][ T5067] udc dummy_udc.0: failed to start USB Raw Gadget: -12 [ 268.918885][ T5067] raw-gadget.0: probe of gadget.0 failed with error -12 [ 268.925956][ T5067] UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy [ 268.934657][ T5067] misc raw-gadget: fail, usb_gadget_register_driver returned -16 BUG: memory leak [<ffffffff8154bf94>] kmalloc_trace+0x24/0x90 mm/slab_common.c:1076 [<ffffffff8347eb55>] kmalloc include/linux/slab.h:582 [inline] [<ffffffff8347eb55>] kzalloc include/linux/slab.h:703 [inline] [<ffffffff8347eb55>] dev_new drivers/usb/gadget/legacy/raw_gadget.c:191 [inline] [<ffffffff8347eb55>] raw_open+0x45/0x110 drivers/usb/gadget/legacy/raw_gadget.c:385 [<ffffffff827d1d09>] misc_open+0x1a9/0x1f0 drivers/char/misc.c:165 [<ffffffff8154bf94>] kmalloc_trace+0x24/0x90 mm/slab_common.c:1076 [<ffffffff8347cd2f>] kmalloc include/linux/slab.h:582 [inline] [<ffffffff8347cd2f>] raw_ioctl_init+0xdf/0x410 drivers/usb/gadget/legacy/raw_gadget.c:460 [<ffffffff8347dfe9>] raw_ioctl+0x5f9/0x1120 drivers/usb/gadget/legacy/raw_gadget.c:1250 [<ffffffff81685173>] vfs_ioctl fs/ioctl.c:51 [inline] [<ffffffff8154bf94>] kmalloc_trace+0x24/0x90 mm/slab_common.c:1076 [<ffffffff833ecc6a>] kmalloc include/linux/slab.h:582 [inline] [<ffffffff833ecc6a>] kzalloc include/linux/slab.h:703 [inline] [<ffffffff833ecc6a>] dummy_alloc_request+0x5a/0xe0 drivers/usb/gadget/udc/dummy_hcd.c:665 [<ffffffff833e9132>] usb_ep_alloc_request+0x22/0xd0 drivers/usb/gadget/udc/core.c:196 [<ffffffff8347f13d>] gadget_bind+0x6d/0x370 drivers/usb/gadget/legacy/raw_gadget.c:292 This commit therefore invoke kref_get() under the condition that raw_queue_event() return success.
Product status
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 68e6287ac61dc22513cd39f02b9ac1fef28513e4
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 0f7a2b567197798da7bfa2252f4485c0ca6c6266
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before de77000c1923d7942f9b4f08447c8feeae1c0f33
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 9934e5d07c0dc294169a7d52f6309f35cd6d7755
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 83e30f2bf86ef7c38fbd476ed81a88522b620628
5.10.190 (semver)
5.15.124 (semver)
6.1.43 (semver)
6.4.8 (semver)
6.5 (original_commit_for_fix)
References
git.kernel.org/...c/68e6287ac61dc22513cd39f02b9ac1fef28513e4
git.kernel.org/...c/0f7a2b567197798da7bfa2252f4485c0ca6c6266
git.kernel.org/...c/de77000c1923d7942f9b4f08447c8feeae1c0f33
git.kernel.org/...c/9934e5d07c0dc294169a7d52f6309f35cd6d7755
git.kernel.org/...c/83e30f2bf86ef7c38fbd476ed81a88522b620628
