{ "schema_version": "1.6.1", "id": "RPI-CVE-2025-68327", "modified": "2026-10-07T17:22:01Z", "upstream": [ "CVE-2025-68327" ], "published": "2025-12-22T16:14:44Z", "summary": "usb: renesas_usbhs: Fix synchronous external abort on unbind", "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: renesas_usbhs: Fix synchronous external abort on unbind\n\nA synchronous external abort occurs on the Renesas RZ/G3S SoC if unbind is\nexecuted after the configuration sequence described above:\n\nmodprobe usb_f_ecm\nmodprobe libcomposite\nmodprobe configfs\ncd /sys/kernel/config/usb_gadget\nmkdir -p g1\ncd g1\necho \"0x1d6b\" > idVendor\necho \"0x0104\" > idProduct\nmkdir -p strings/0x409\necho \"0123456789\" > strings/0x409/serialnumber\necho \"Renesas.\" > strings/0x409/manufacturer\necho \"Ethernet Gadget\" > strings/0x409/product\nmkdir -p functions/ecm.usb0\nmkdir -p configs/c.1\nmkdir -p configs/c.1/strings/0x409\necho \"ECM\" > configs/c.1/strings/0x409/configuration\n\nif [ ! -L configs/c.1/ecm.usb0 ]; then\n ln -s functions/ecm.usb0 configs/c.1\nfi\n\necho 11e20000.usb > UDC\necho 11e20000.usb > /sys/bus/platform/drivers/renesas_usbhs/unbind\n\nThe displayed trace is as follows:\n\n Internal error: synchronous external abort: 0000000096000010 [#1] SMP\n CPU: 0 UID: 0 PID: 188 Comm: sh Tainted: G M 6.17.0-rc7-next-20250922-00010-g41050493b2bd #55 PREEMPT\n Tainted: [M]=MACHINE_CHECK\n Hardware name: Renesas SMARC EVK version 2 based on r9a08g045s33 (DT)\n pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : usbhs_sys_function_pullup+0x10/0x40 [renesas_usbhs]\n lr : usbhsg_update_pullup+0x3c/0x68 [renesas_usbhs]\n sp : ffff8000838b3920\n x29: ffff8000838b3920 x28: ffff00000d585780 x27: 0000000000000000\n x26: 0000000000000000 x25: 0000000000000000 x24: ffff00000c3e3810\n x23: ffff00000d5e5c80 x22: ffff00000d5e5d40 x21: 0000000000000000\n x20: 0000000000000000 x19: ffff00000d5e5c80 x18: 0000000000000020\n x17: 2e30303230316531 x16: 312d7968703a7968 x15: 3d454d414e5f4344\n x14: 000000000000002c x13: 0000000000000000 x12: 0000000000000000\n x11: ffff00000f358f38 x10: ffff00000f358db0 x9 : ffff00000b41f418\n x8 : 0101010101010101 x7 : 7f7f7f7f7f7f7f7f x6 : fefefeff6364626d\n x5 : 8080808000000000 x4 : 000000004b5ccb9d x3 : 0000000000000000\n x2 : 0000000000000000 x1 : ffff800083790000 x0 : ffff00000d5e5c80\n Call trace:\n usbhs_sys_function_pullup+0x10/0x40 [renesas_usbhs] (P)\n usbhsg_pullup+0x4c/0x7c [renesas_usbhs]\n usb_gadget_disconnect_locked+0x48/0xd4\n gadget_unbind_driver+0x44/0x114\n device_remove+0x4c/0x80\n device_release_driver_internal+0x1c8/0x224\n device_release_driver+0x18/0x24\n bus_remove_device+0xcc/0x10c\n device_del+0x14c/0x404\n usb_del_gadget+0x88/0xc0\n usb_del_gadget_udc+0x18/0x30\n usbhs_mod_gadget_remove+0x24/0x44 [renesas_usbhs]\n usbhs_mod_remove+0x20/0x30 [renesas_usbhs]\n usbhs_remove+0x98/0xdc [renesas_usbhs]\n platform_remove+0x20/0x30\n device_remove+0x4c/0x80\n device_release_driver_internal+0x1c8/0x224\n device_driver_detach+0x18/0x24\n unbind_store+0xb4/0xb8\n drv_attr_store+0x24/0x38\n sysfs_kf_write+0x7c/0x94\n kernfs_fop_write_iter+0x128/0x1b8\n vfs_write+0x2ac/0x350\n ksys_write+0x68/0xfc\n __arm64_sys_write+0x1c/0x28\n invoke_syscall+0x48/0x110\n el0_svc_common.constprop.0+0xc0/0xe0\n do_el0_svc+0x1c/0x28\n el0_svc+0x34/0xf0\n el0t_64_sync_handler+0xa0/0xe4\n el0t_64_sync+0x198/0x19c\n Code: 7100003f 1a9f07e1 531c6c22 f9400001 (79400021)\n ---[ end trace 0000000000000000 ]---\n note: sh[188] exited with irqs disabled\n note: sh[188] exited with preempt_count 1\n\nThe issue occurs because usbhs_sys_function_pullup(), which accesses the IP\nregisters, is executed after the USBHS clocks have been disabled. The\nproblem is reproducible on the Renesas RZ/G3S SoC starting with the\naddition of module stop in the clock enable/disable APIs. With module stop\nfunctionality enabled, a bus error is expected if a master accesses a\nmodule whose clock has been stopped and module stop activated.\n\nDisable the IP clocks at the end of remove.", "affected": [ { "package": { "ecosystem": "Raspberry Pi OS:12", "name": "linux" }, "versions": [ "1:6.1.47-1+rpt4" ], "ecosystem_specific": { "binaries": [ { "binary_name": "linux-image-6.1.0-rpi3-rpi-2712", "binary_version": "1:6.1.47-1+rpt4" }, { "binary_name": "linux-image-6.1.0-rpi3-rpi-v6", "binary_version": "1:6.1.47-1+rpt4" }, { "binary_name": "linux-image-6.1.0-rpi3-rpi-v7", "binary_version": "1:6.1.47-1+rpt4" }, { "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l", "binary_version": "1:6.1.47-1+rpt4" }, { "binary_name": "linux-image-6.1.0-rpi3-rpi-v8", "binary_version": "1:6.1.47-1+rpt4" } ] }, "database_specific": { "per_version": { "1:6.1.47-1+rpt4": { "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e", "upstream_version": "6.1.47", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.1.159", "compiled_filter": false } } } } ], "references": [ { "type": "ADVISORY", "url": "https://www.cve.org/CVERecord?id=CVE-2025-68327" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/fd1a7bf3a8cac13f6d2d52d8c7570ba41621db9a" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/cd5e86e34c66a831b5cb9b720ad411a006962cc8" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/230b1bc1310edcd5c1b71dcd6b77ccba43139cb5" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/9d86bc8b188a77c8d6f7252280ec2bd24ad6fbc1" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/26838f147aeaa8f820ff799d72815fba5e209bd9" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/aa658a6d5ac21c7cde54c6d015f2d4daff32e02d" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/eb9ac779830b2235847b72cb15cf07c7e3333c5e" } ], "database_specific": { "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git", "upstream_modified": "2026-05-12T04:54:46Z" } }