From e873c74132f0c5f1452816cd9bb26208f0bba1e1 Mon Sep 17 00:00:00 2001 From: Shivank Garg Date: Sat, 22 Aug 2026 19:22:05 +0000 Subject: dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel() When dma_device_put() drops the last reference on chan->device->ref, dma_device_release() runs and may free the dma_device along with its channels. dma_chan_put() then still reads chan->device->owner via dma_chan_to_owner() for the trailing module_put(). KASAN catches it: slab-use-after-free in dma_chan_put+0x3e6/0x4c0 Read of size 8 by task insmod/6319 Freed by task 6319: kfree+0x225/0x470 dma_chan_put+0x395/0x4c0 dmaengine_put+0xf8/0x160 Cache the module owner in dma_chan_put() before the put so the trailing module_put() does not need chan->device. Fixes: 8ad342a86359 ("dmaengine: Add reference counting to dma_device struct") Suggested-by: Sashiko Link: https://sashiko.dev/#/patchset/20260518-dmaengine-kref-fix-v1-1-4d6125048fb7@amd.com Reviewed-by: Frank Li Reviewed-by: Logan Gunthorpe Signed-off-by: Shivank Garg Link: https://patch.msgid.link/20260822-dmaengine-kref-fix-v5-3-d4a4ee47d927@amd.com Signed-off-by: Vinod Koul --- drivers/usb/misc/Makefile | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 drivers/usb/misc/Makefile (limited to 'drivers/usb/misc/Makefile') diff --git a/drivers/usb/misc/Makefile b/drivers/usb/misc/Makefile new file mode 100644 index 000000000..494ab0377 --- /dev/null +++ b/drivers/usb/misc/Makefile @@ -0,0 +1,37 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the rest of the USB drivers +# (the ones that don't fit into any other categories) +# +obj-$(CONFIG_USB_ADUTUX) += adutux.o +obj-$(CONFIG_USB_APPLEDISPLAY) += appledisplay.o +obj-$(CONFIG_USB_CYPRESS_CY7C63) += cypress_cy7c63.o +obj-$(CONFIG_USB_CYTHERM) += cytherm.o +obj-$(CONFIG_USB_EMI26) += emi26.o +obj-$(CONFIG_USB_EMI62) += emi62.o +obj-$(CONFIG_USB_EZUSB_FX2) += ezusb.o +obj-$(CONFIG_APPLE_MFI_FASTCHARGE) += apple-mfi-fastcharge.o +obj-$(CONFIG_USB_LJCA) += usb-ljca.o +obj-$(CONFIG_USB_USBIO) += usbio.o +obj-$(CONFIG_USB_IDMOUSE) += idmouse.o +obj-$(CONFIG_USB_IOWARRIOR) += iowarrior.o +obj-$(CONFIG_USB_ISIGHTFW) += isight_firmware.o +obj-$(CONFIG_USB_LCD) += usblcd.o +obj-$(CONFIG_USB_LD) += ldusb.o +obj-$(CONFIG_USB_LEGOTOWER) += legousbtower.o +obj-$(CONFIG_USB_QCOM_EUD) += qcom_eud.o +obj-$(CONFIG_USB_TEST) += usbtest.o +obj-$(CONFIG_USB_EHSET_TEST_FIXTURE) += ehset.o +obj-$(CONFIG_USB_TRANCEVIBRATOR) += trancevibrator.o +obj-$(CONFIG_USB_USS720) += uss720.o +obj-$(CONFIG_USB_SEVSEG) += usbsevseg.o +obj-$(CONFIG_USB_YUREX) += yurex.o +obj-$(CONFIG_USB_HUB_USB251XB) += usb251xb.o +obj-$(CONFIG_USB_HSIC_USB3503) += usb3503.o +obj-$(CONFIG_USB_HSIC_USB4604) += usb4604.o +obj-$(CONFIG_USB_CHAOSKEY) += chaoskey.o + +obj-$(CONFIG_USB_SISUSBVGA) += sisusbvga/ +obj-$(CONFIG_USB_LINK_LAYER_TEST) += lvstest.o +obj-$(CONFIG_BRCM_USB_PINMAP) += brcmstb-usb-pinmap.o +obj-$(CONFIG_USB_ONBOARD_DEV) += onboard_usb_dev.o -- cgit v1.3.1