https://bugzilla.kernel.org/show_bug.cgi?id=215405 Bug ID: 215405 Summary: use-after-free Read in ath9k_hif_usb_rx_cb' bug Product: Drivers Version: 2.5 Kernel Version: linux-5.16-rc6 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: USB Assignee: drivers_usb@xxxxxxxxxxxxxxxxxxxxxx Reporter: 6201613047@xxxxxxxxxxxxxxxxxxx Regression: No Created attachment 300141 --> https://bugzilla.kernel.org/attachment.cgi?id=300141&action=edit poc.c I've using Syzkaller-USB get a use-after-free BUG on the USB drivers. And the the report is as follow. ================================================================== BUG: KASAN: use-after-free in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:636 [inline] BUG: KASAN: use-after-free in ath9k_hif_usb_rx_cb+0xeca/0x1160 drivers/net/wireless/ath/ath9k/hif_usb.c:680 Read of size 4 at addr ffff88810d524278 by task swapper/0/0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.0-rc6 #3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x93/0x347 mm/kasan/report.c:247 __kasan_report mm/kasan/report.c:433 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:450 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:636 [inline] ath9k_hif_usb_rx_cb+0xeca/0x1160 drivers/net/wireless/ath/ath9k/hif_usb.c:680 __usb_hcd_giveback_urb+0x2c2/0x5a0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726 dummy_timer+0x1267/0x33b0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x6b0/0xa90 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb6/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x1c0/0x8ee kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0xe2/0x120 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:734 Code: bf fe ff 4c 89 e2 48 89 ef 5d 41 5c 31 f6 e9 ac 12 7a fc cc cc cc cc cc cc cc cc cc cc cc cc eb 07 0f 00 2d 77 44 5a 00 fb f4 <c3> 0f 1f 40 00 41 54 be 08 00 00 00 53 65 48 8b 1c 25 80 6f 02 00 RSP: 0018:ffffffff87607e28 EFLAGS: 00000206 RAX: 0000000000022311 RBX: 0000000000000000 RCX: ffffffff85c676b2 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed10235070eb R10: ffff88811a838753 R11: ffffed10235070ea R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff88b50150 R15: 0000000000000000 default_idle_call+0xc4/0x420 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:194 [inline] do_idle+0x3f9/0x570 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_kernel+0x47a/0x49b init/main.c:1135 secondary_startup_64_no_verify+0xb0/0xbb </TASK> The buggy address belongs to the page: page:ffffea0004354900 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d524 flags: 0x200000000000000(node=0|zone=2) raw: 0200000000000000 0000000000000000 ffffea0004354908 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 3, migratetype Unmovable, gfp_mask 0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), pid 268, ts 48372046740, free_ts 49398863548 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook mm/page_alloc.c:2412 [inline] prep_new_page+0x1a6/0x240 mm/page_alloc.c:2418 get_page_from_freelist+0x1612/0x28c0 mm/page_alloc.c:4149 __alloc_pages+0x2d5/0x6c0 mm/page_alloc.c:5369 alloc_pages+0x115/0x240 mm/mempolicy.c:2191 kmalloc_order+0x34/0xf0 mm/slab_common.c:949 kmalloc_order_trace+0x14/0x120 mm/slab_common.c:965 kmalloc_large include/linux/slab.h:519 [inline] __kmalloc+0x316/0x3a0 mm/slub.c:4412 kmalloc include/linux/slab.h:595 [inline] kzalloc include/linux/slab.h:724 [inline] wiphy_new_nm+0x6f0/0x1e40 net/wireless/core.c:449 ieee80211_alloc_hw_nm+0x38b/0x2280 net/mac80211/main.c:585 ieee80211_alloc_hw include/net/mac80211.h:4315 [inline] ath9k_htc_probe_device+0x97/0x1f40 drivers/net/wireless/ath/ath9k/htc_drv_init.c:939 ath9k_htc_hw_init+0x31/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:503 ath9k_hif_usb_firmware_cb+0x274/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1239 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1022 process_one_work+0x9df/0x16d0 kernel/workqueue.c:2298 worker_thread+0x90/0xed0 kernel/workqueue.c:2445 kthread+0x40b/0x500 kernel/kthread.c:327 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1338 [inline] free_pcp_prepare+0x447/0x8c0 mm/page_alloc.c:1389 free_unref_page_prepare mm/page_alloc.c:3309 [inline] free_unref_page+0x19/0x4a0 mm/page_alloc.c:3388 free_nonslab_page mm/slub.c:3551 [inline] kfree+0x387/0x470 mm/slub.c:4558 device_release+0x9f/0x240 drivers/base/core.c:2230 kobject_cleanup lib/kobject.c:705 [inline] kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x530 lib/kobject.c:753 put_device+0x1b/0x30 drivers/base/core.c:3501 ath9k_htc_probe_device+0x1c7/0x1f40 drivers/net/wireless/ath/ath9k/htc_drv_init.c:976 ath9k_htc_hw_init+0x31/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:503 ath9k_hif_usb_firmware_cb+0x274/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1239 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1022 process_one_work+0x9df/0x16d0 kernel/workqueue.c:2298 worker_thread+0x90/0xed0 kernel/workqueue.c:2445 kthread+0x40b/0x500 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Memory state around the buggy address: ffff88810d524100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88810d524180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88810d524200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88810d524280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88810d524300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== ---------------- Code disassembly (best guess): 0: bf fe ff 4c 89 mov $0x894cfffe,%edi 5: e2 48 loop 0x4f 7: 89 ef mov %ebp,%edi 9: 5d pop %rbp a: 41 5c pop %r12 c: 31 f6 xor %esi,%esi e: e9 ac 12 7a fc jmpq 0xfc7a12bf 13: cc int3 14: cc int3 15: cc int3 16: cc int3 17: cc int3 18: cc int3 19: cc int3 1a: cc int3 1b: cc int3 1c: cc int3 1d: cc int3 1e: cc int3 1f: eb 07 jmp 0x28 21: 0f 00 2d 77 44 5a 00 verw 0x5a4477(%rip) # 0x5a449f 28: fb sti 29: f4 hlt * 2a: c3 retq <-- trapping instruction 2b: 0f 1f 40 00 nopl 0x0(%rax) 2f: 41 54 push %r12 31: be 08 00 00 00 mov $0x8,%esi 36: 53 push %rbx 37: 65 48 8b 1c 25 80 6f mov %gs:0x26f80,%rbx 3e: 02 00 -- You may reply to this email to add a comment. 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