Hi, Alan Stern writes: >> > Index: usb-4.x/drivers/usb/gadget/legacy/inode.c >> > =================================================================== >> > --- usb-4.x.orig/drivers/usb/gadget/legacy/inode.c >> > +++ usb-4.x/drivers/usb/gadget/legacy/inode.c >> > @@ -1126,7 +1126,7 @@ ep0_write (struct file *fd, const char _ >> > /* data and/or status stage for control request */ >> > } else if (dev->state == STATE_DEV_SETUP) { >> > >> > - /* IN DATA+STATUS caller makes len <= wLength */ >> > + len = min(len, (size_t) dev->setup_wLength); >> > if (dev->setup_in) { >> > retval = setup_req (dev->gadget->ep0, dev->req, len); >> > if (retval == 0) { >> > >> >> I already have a patch from Greg for this. See [1] >> >> [1] https://git.kernel.org/cgit/linux/kernel/git/balbi/usb.git/commit/?id=230bc0cb8ff222d9f0fbbd93a80393140b39481f > > The two patches fix different problems. My patch goes on the pathway > where dev->state > STATE_DEV_OPENED in dev_config(), and Greg's patch > handles the case where it is <=. Okay, here's what I have so far in my testing/fixes: $ git --no-pager shortlog testing/fixes ^linus/master Alan Stern (5): USB: dummy-hcd: fix bug in stop_activity (handle ep0) USB: gadgetfs: fix unbounded memory allocation bug USB: gadgetfs: fix use-after-free bug USB: gadgetfs: fix checks of wTotalLength in config descriptors USB: gadgetfs: remove unnecessary assignment Baolin Wang (1): usb: gadget: f_fs: Fix possibe deadlock Felipe Balbi (4): usb: dwc3: ep0: add dwc3_ep0_prepare_one_trb() usb: dwc3: ep0: explicitly call dwc3_ep0_prepare_one_trb() usb: dwc3: gadget: always unmap EP0 requests usb: dwc3: core: avoid Overflow events Greg Kroah-Hartman (1): usb: gadgetfs: restrict upper bound on device configuration size Grygorii Strashko (1): usb: dwc3: omap: fix race of pm runtime with irq handler in probe Hans de Goede (1): usb: dwc3: pci: Fix dr_mode misspelling Heikki Krogerus (1): usb: dwc3: pci: add Intel Gemini Lake PCI ID Janusz Dziedzic (1): usb: dwc3: skip interrupt when ep disabled John Youn (1): usb: dwc3: pci: Add "linux,sysdev_is_parent" property Krzysztof Opasiak (1): usb: gadget: composite: Test get_alt() presence instead of set_alt() Marek Szyprowski (1): usb: dwc2: fix flags for DMA descriptor allocation in dwc2_hsotg_ep_enable Stefan Wahren (4): usb: dwc2: Do not set host parameter in peripheral mode usb: dwc2: fix dwc2_get_device_property for u8 and u16 usb: dwc2: fix default value for DMA support usb: dwc2: gadget: fix default value for gadget-dma-desc Vincent Pelletier (2): usb: gadget: f_fs: Document eventfd effect on descriptor format. usb: gadget: f_fs: Fix ExtCompat descriptor validation -- balbi