CVE-2023-52742

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: USB: Fix wrong-direction WARNING in plusb.c<br /> <br /> The syzbot fuzzer detected a bug in the plusb network driver: A<br /> zero-length control-OUT transfer was treated as a read instead of a<br /> write. In modern kernels this error provokes a WARNING:<br /> <br /> usb 1-1: BOGUS control dir, pipe 80000280 doesn&amp;#39;t match bRequestType c0<br /> WARNING: CPU: 0 PID: 4645 at drivers/usb/core/urb.c:411<br /> usb_submit_urb+0x14a7/0x1880 drivers/usb/core/urb.c:411<br /> Modules linked in:<br /> CPU: 1 PID: 4645 Comm: dhcpcd Not tainted<br /> 6.2.0-rc6-syzkaller-00050-g9f266ccaa2f5 #0<br /> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google<br /> 01/12/2023<br /> RIP: 0010:usb_submit_urb+0x14a7/0x1880 drivers/usb/core/urb.c:411<br /> ...<br /> Call Trace:<br /> <br /> usb_start_wait_urb+0x101/0x4b0 drivers/usb/core/message.c:58<br /> usb_internal_control_msg drivers/usb/core/message.c:102 [inline]<br /> usb_control_msg+0x320/0x4a0 drivers/usb/core/message.c:153<br /> __usbnet_read_cmd+0xb9/0x390 drivers/net/usb/usbnet.c:2010<br /> usbnet_read_cmd+0x96/0xf0 drivers/net/usb/usbnet.c:2068<br /> pl_vendor_req drivers/net/usb/plusb.c:60 [inline]<br /> pl_set_QuickLink_features drivers/net/usb/plusb.c:75 [inline]<br /> pl_reset+0x2f/0xf0 drivers/net/usb/plusb.c:85<br /> usbnet_open+0xcc/0x5d0 drivers/net/usb/usbnet.c:889<br /> __dev_open+0x297/0x4d0 net/core/dev.c:1417<br /> __dev_change_flags+0x587/0x750 net/core/dev.c:8530<br /> dev_change_flags+0x97/0x170 net/core/dev.c:8602<br /> devinet_ioctl+0x15a2/0x1d70 net/ipv4/devinet.c:1147<br /> inet_ioctl+0x33f/0x380 net/ipv4/af_inet.c:979<br /> sock_do_ioctl+0xcc/0x230 net/socket.c:1169<br /> sock_ioctl+0x1f8/0x680 net/socket.c:1286<br /> vfs_ioctl fs/ioctl.c:51 [inline]<br /> __do_sys_ioctl fs/ioctl.c:870 [inline]<br /> __se_sys_ioctl fs/ioctl.c:856 [inline]<br /> __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856<br /> do_syscall_x64 arch/x86/entry/common.c:50 [inline]<br /> do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80<br /> entry_SYSCALL_64_after_hwframe+0x63/0xcd<br /> <br /> The fix is to call usbnet_write_cmd() instead of usbnet_read_cmd() and<br /> remove the USB_DIR_IN flag.