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KASAN: use-after-free Read in hidraw_ioctl

Status: closed as dup on 2019/08/21 16:40
Subsystems: input
[Documentation on labels]
Reported-by: syzbot+ded1794a717e3b235226@syzkaller.appspotmail.com
First crash: 2062d, last: 1997d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
KASAN: slab-out-of-bounds Read in hidraw_ioctl input C 104 2004d 2054d
▶ ▼ Discussions (4)
Title Replies (including bot) Last reply
KASAN: use-after-free Read in hidraw_ioctl 5 (10) 2019/08/21 16:39
KASAN: use-after-free Read in usbhid_power 24 (28) 2019/08/12 14:29
Reminder: 3 open syzbot bugs in hid subsystem 1 (1) 2019/07/24 02:41
Reminder: 67 open syzbot bugs in usb subsystem 1 (1) 2019/07/24 01:35
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2019/08/21 16:19 18m stern@rowland.harvard.edu patch https://github.com/google/kasan.git e96407b4 OK
2019/08/21 12:55 17m andreyknvl@google.com patch https://github.com/google/kasan.git 6a3599ce report log

Sample crash report:
==================================================================
BUG: KASAN: use-after-free in strlen+0x79/0x90 lib/string.c:525
Read of size 1 at addr ffff8881c8c71eb8 by task syz-executor068/3309

CPU: 1 PID: 3309 Comm: syz-executor068 Not tainted 5.3.0-rc5+ #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 print_address_description+0x6a/0x32c mm/kasan/report.c:351
 __kasan_report.cold+0x1a/0x33 mm/kasan/report.c:482
 kasan_report+0xe/0x12 mm/kasan/common.c:612
 strlen+0x79/0x90 lib/string.c:525
 strlen include/linux/string.h:281 [inline]
 hidraw_ioctl+0x62b/0xae0 drivers/hid/hidraw.c:437
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xd2d/0x1330 fs/ioctl.c:696
 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718
 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x447529
Code: e8 4c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb cb fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd7ff1c128 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000447529
RDX: 0000000000000000 RSI: 0000000080404804 RDI: 0000000000000005
RBP: 00007ffd7ff1c150 R08: 00007ffd7ff1c150 R09: 0000000000000000
R10: 00007ffd7ff1bc70 R11: 0000000000000246 R12: 0000000000106459
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

The buggy address belongs to the page:
page:ffffea0007231c40 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x200000000000000()
raw: 0200000000000000 0000000000000000 ffffffff07230201 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881c8c71d80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881c8c71e00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881c8c71e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                        ^
 ffff8881c8c71f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881c8c71f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================

Crashes (2568):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/08/21 05:14 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 6b8391d0 .config console log report syz C ci2-upstream-usb
2019/08/14 23:13 https://github.com/google/kasan.git usb-fuzzer d0847550e22d 5576551b .config console log report syz C ci2-upstream-usb
2019/08/11 20:23 https://github.com/google/kasan.git usb-fuzzer e96407b49762 acb51638 .config console log report syz C ci2-upstream-usb
2019/08/11 03:22 https://github.com/google/kasan.git usb-fuzzer e96407b49762 acb51638 .config console log report syz C ci2-upstream-usb
2019/08/11 02:46 https://github.com/google/kasan.git usb-fuzzer e96407b49762 acb51638 .config console log report syz C ci2-upstream-usb
2019/08/10 10:12 https://github.com/google/kasan.git usb-fuzzer e96407b49762 acb51638 .config console log report syz C ci2-upstream-usb
2019/08/08 04:37 https://github.com/google/kasan.git usb-fuzzer e96407b49762 e6ebef88 .config console log report syz C ci2-upstream-usb
2019/08/06 23:50 https://github.com/google/kasan.git usb-fuzzer e96407b49762 da562c0b .config console log report syz C ci2-upstream-usb
2019/08/06 04:23 https://github.com/google/kasan.git usb-fuzzer e96407b49762 6affd8e8 .config console log report syz C ci2-upstream-usb
2019/08/04 16:28 https://github.com/google/kasan.git usb-fuzzer e96407b49762 6affd8e8 .config console log report syz C ci2-upstream-usb
2019/08/04 06:49 https://github.com/google/kasan.git usb-fuzzer e96407b49762 6affd8e8 .config console log report syz C ci2-upstream-usb
2019/08/04 04:12 https://github.com/google/kasan.git usb-fuzzer e96407b49762 6affd8e8 .config console log report syz C ci2-upstream-usb
2019/08/02 20:55 https://github.com/google/kasan.git usb-fuzzer e96407b49762 3faab807 .config console log report syz C ci2-upstream-usb
2019/07/31 18:58 https://github.com/google/kasan.git usb-fuzzer 7f7867ff95bf 995b2a26 .config console log report syz C ci2-upstream-usb
2019/07/31 08:49 https://github.com/google/kasan.git usb-fuzzer 7f7867ff95bf 7c7ded69 .config console log report syz C ci2-upstream-usb
2019/07/30 03:25 https://github.com/google/kasan.git usb-fuzzer 7f7867ff95bf f67095ee .config console log report syz C ci2-upstream-usb
2019/07/28 15:57 https://github.com/google/kasan.git usb-fuzzer 6a3599ceaa39 c85e1c5b .config console log report syz C ci2-upstream-usb
2019/07/22 22:49 https://github.com/google/kasan.git usb-fuzzer 6a3599ceaa39 55e0c077 .config console log report syz C ci2-upstream-usb
2019/08/05 16:04 https://github.com/google/kasan.git usb-fuzzer e96407b49762 6affd8e8 .config console log report syz ci2-upstream-usb
2019/09/25 16:49 https://github.com/google/kasan.git usb-fuzzer d9e63adcd16e a3355dba .config console log report ci2-upstream-usb
2019/09/25 15:49 https://github.com/google/kasan.git usb-fuzzer d9e63adcd16e a3355dba .config console log report ci2-upstream-usb
2019/09/25 14:06 https://github.com/google/kasan.git usb-fuzzer d9e63adcd16e a3355dba .config console log report ci2-upstream-usb
2019/09/25 12:16 https://github.com/google/kasan.git usb-fuzzer d9e63adcd16e e38a6630 .config console log report ci2-upstream-usb
2019/09/25 08:55 https://github.com/google/kasan.git usb-fuzzer d9e63adcd16e e38a6630 .config console log report ci2-upstream-usb
2019/09/25 03:51 https://github.com/google/kasan.git usb-fuzzer d9e63adcd16e e38a6630 .config console log report ci2-upstream-usb
2019/09/24 15:14 https://github.com/google/kasan.git usb-fuzzer d9e63adcd16e f8368f99 .config console log report ci2-upstream-usb
2019/09/24 00:07 https://github.com/google/kasan.git usb-fuzzer d9e63adcd16e c68252d2 .config console log report ci2-upstream-usb
2019/09/23 15:51 https://github.com/google/kasan.git usb-fuzzer d9e63adcd16e 1e9788a0 .config console log report ci2-upstream-usb
2019/09/23 12:15 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/23 10:08 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/23 08:41 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/23 06:31 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 20:47 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 19:30 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 18:25 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 17:09 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 15:25 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 14:54 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 09:41 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 08:15 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 06:06 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 04:11 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 02:31 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/22 00:05 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 22:28 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 21:08 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 19:58 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 17:30 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 16:49 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 15:42 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 12:35 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 09:53 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 05:47 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 03:36 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/21 00:58 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/20 23:57 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/20 22:46 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/20 20:53 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/20 19:51 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/20 17:48 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/20 15:49 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/20 14:16 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/20 14:07 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/20 10:14 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report ci2-upstream-usb
2019/09/20 06:00 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 4d3ae0b7 .config console log report ci2-upstream-usb
2019/07/22 18:31 https://github.com/google/kasan.git usb-fuzzer 6a3599ceaa39 55e0c077 .config console log report ci2-upstream-usb
* Struck through repros no longer work on HEAD.