Oliver Neukum b41c1fa155 USB: class: CDC-ACM: fix race between get_serial and set_serial ... TIOCGSERIAL is an ioctl. Thus it must be atomic. It returns two values. Racing with set_serial it can return an inconsistent result. The mutex must be taken. In terms of logic the bug is as old as the driver. In terms of code it goes back to the conversion to the get_serial and set_serial methods. Signed-off-by: Oliver Neukum <oneukum@suse.com> Cc: stable <stable@kernel.org> Fixes: 99f75a1fcd ("cdc-acm: switch to ->[sg]et_serial()") Link: https://lore.kernel.org/r/20240912141916.1044393-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-09-13 07:53:52 +02:00
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cdc-acm.c	USB: class: CDC-ACM: fix race between get_serial and set_serial	2024-09-13 07:53:52 +02:00
cdc-acm.h	USB: cdc-acm: use CDC serial-state defines	2022-07-25 10:57:41 +02:00
cdc-wdm.c	USB: class: cdc-wdm: Fix CPU lockup caused by excessive log messages	2024-06-14 08:47:59 +02:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	USB: add SPDX identifiers to all remaining Makefiles	2017-11-07 15:53:48 +01:00
usblp.c	USB: make devnode() callback in usb_class_driver take a const *	2022-10-20 12:11:56 +02:00
usbtmc.c	USB: usbtmc: prevent kernel-usb-infoleak	2024-09-11 15:34:17 +02:00