title: misc/uss720: fix memory leak in uss720_probe
description: In the Linux kernel, the following vulnerability has been resolved:
misc/uss720: fix memory leak in uss720_probe
uss720_probe forgets to decrease the refcount of usbdev in uss720_probe.
Fix this by decreasing the refcount of usbdev by usb_put_dev.
BUG: memory leak
unreferenced object 0xffff888101113800 (size 2048):
comm "kworker/0:1", pid 7, jiffies 4294956777 (age 28.870s)
hex dump (first 32 bytes):
ff ff ff ff 31 00 00 00 00 00 00 00 00 00 00 00  ....1...........
00 00 00 00 00 00 00 00 00 00 00 00 03 00 00 00  ................
backtrace:
[<ffffffff82b8e822>] kmalloc include/linux/slab.h:554 [inline]
[<ffffffff82b8e822>] kzalloc include/linux/slab.h:684 [inline]
[<ffffffff82b8e822>] usb_alloc_dev+0x32/0x450 drivers/usb/core/usb.c:582
[<ffffffff82b98441>] hub_port_connect drivers/usb/core/hub.c:5129 [inline]
[<ffffffff82b98441>] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
[<ffffffff82b98441>] port_event drivers/usb/core/hub.c:5509 [inline]
[<ffffffff82b98441>] hub_event+0x1171/0x20c0 drivers/usb/core/hub.c:5591
[<ffffffff81259229>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2275
[<ffffffff81259b19>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2421
[<ffffffff81261228>] kthread+0x178/0x1b0 kernel/kthread.c:292
[<ffffffff8100227f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
affected:
{
product: Linux
vendor: Linux
defaultStatus: unaffected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions:
version: 0f36163d3abe, lessThan: 5f46b2410db2, status: affected, versionType: git
version: 0f36163d3abe, lessThan: 7889c70e6173, status: affected, versionType: git
version: 0f36163d3abe, lessThan: bcb30cc8f8be, status: affected, versionType: git
version: 0f36163d3abe, lessThan: 386918878ce4, status: affected, versionType: git
version: 0f36163d3abe, lessThan: 36b5ff1db1a4, status: affected, versionType: git
version: 0f36163d3abe, lessThan: 5394ae9d8c79, status: affected, versionType: git
version: 0f36163d3abe, lessThan: a3c3face38cb, status: affected, versionType: git
version: 0f36163d3abe, lessThan: dcb4b8ad6a44, status: affected, versionType: git
}
{
product: Linux
vendor: Linux
defaultStatus: affected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions:
version: 2.6.14, status: affected
version: 0, lessThan: 2.6.14, status: unaffected, versionType: custom
version: 4.4.271, lessThanOrEqual: 4.4.*, status: unaffected, versionType: custom
version: 4.9.271, lessThanOrEqual: 4.9.*, status: unaffected, versionType: custom
version: 4.14.235, lessThanOrEqual: 4.14.*, status: unaffected, versionType: custom
version: 4.19.193, lessThanOrEqual: 4.19.*, status: unaffected, versionType: custom
version: 5.4.124, lessThanOrEqual: 5.4.*, status: unaffected, versionType: custom
version: 5.10.42, lessThanOrEqual: 5.10.*, status: unaffected, versionType: custom
version: 5.12.9, lessThanOrEqual: 5.12.*, status: unaffected, versionType: custom
version: 5.13, lessThanOrEqual: *, status: unaffected, versionType: original_commit_for_fix
}
