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KASAN: slab-out-of-bounds Read in hidraw_ioctl

Status: fixed on 2019/10/15 23:39
Subsystems: input
[Documentation on labels]
Reported-by: syzbot+5a6c4ec678a0c6ee84ba@syzkaller.appspotmail.com
Fix commit: 416dacb819f5 HID: hidraw: Fix invalid read in hidraw_ioctl
First crash: 2066d, last: 2015d
▶ ▼ Duplicate bugs (3)
duplicates (3):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
BUG: bad usercopy in hidraw_ioctl hardening mm 5 2040d 2057d 0/28 closed as dup on 2019/08/21 17:00
KASAN: slab-out-of-bounds Read in usbhid_close usb input 1 2059d 2058d 0/28 closed as dup on 2019/08/21 17:03
KASAN: use-after-free Read in hidraw_ioctl input C 2568 2008d 2072d 0/28 closed as dup on 2019/08/21 16:40
▶ ▼ Discussions (10)
Title Replies (including bot) Last reply
[PATCH 3.16 00/72] 3.16.79-rc1 review 87 (87) 2019/12/14 18:44
[PATCH 4.14 000/185] 4.14.147-stable review 191 (191) 2019/10/05 00:10
[PATCH 4.9 000/129] 4.9.195-stable review 135 (135) 2019/10/04 22:56
[PATCH 4.4 00/99] 4.4.195-stable review 105 (105) 2019/10/04 22:55
[PATCH 4.19 00/63] 4.19.76-stable review 83 (83) 2019/10/02 13:16
[PATCH 5.2 00/45] 5.2.18-stable review 54 (54) 2019/10/01 22:58
[PATCH 5.3 00/25] 5.3.2-stable review 34 (34) 2019/10/01 16:59
[PATCH] HID: hidraw: Fix invalid read in hidraw_ioctl 2 (2) 2019/08/22 07:51
Reminder: 52 active syzbot reports in usb subsystem 1 (1) 2019/08/22 03:28
KASAN: slab-out-of-bounds Read in hidraw_ioctl 9 (17) 2019/08/21 16:50
▶ ▼ Last patch testing requests (4)
Created Duration User Patch Repo Result
2019/08/21 15:53 18m stern@rowland.harvard.edu patch https://github.com/google/kasan.git e96407b4 OK
2019/08/21 14:40 10m stern@rowland.harvard.edu patch https://github.com/google/kasan.git e96407b4 report log
2019/08/21 12:58 10m andreyknvl@google.com patch https://github.com/google/kasan.git e96407b4 report log
2019/08/12 09:32 11m oneukum@suse.com patch https://github.com/google/kasan.git e96407b4 report log

Sample crash report:
==================================================================
BUG: KASAN: slab-out-of-bounds in strlen+0x79/0x90 lib/string.c:525
Read of size 1 at addr ffff8881d29bdf38 by task syz-executor201/1726

CPU: 1 PID: 1726 Comm: syz-executor201 Not tainted 5.3.0-rc2+ #25
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+0x245/0xae0 drivers/hid/hidraw.c:446
 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: 0033:0x445679
Code: e8 5c ad 02 00 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 9b cd fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc8514f3a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445679
RDX: 0000000000000000 RSI: 0000000080404805 RDI: 0000000000000004
RBP: 00000000006d0018 R08: 000000000000000b R09: 00000000004002e0
R10: 000000000000000f R11: 0000000000000246 R12: 00000000004028a0
R13: 0000000000402930 R14: 0000000000000000 R15: 0000000000000000

Allocated by task 0:
(stack is not available)

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8881d29bde60
 which belongs to the cache shmem_inode_cache of size 1168
The buggy address is located 216 bytes inside of
 1168-byte region [ffff8881d29bde60, ffff8881d29be2f0)
The buggy address belongs to the page:
page:ffffea00074a6f00 refcount:1 mapcount:0 mapping:ffff8881da115180 index:0x0 compound_mapcount: 0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da115180
raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881d29bde00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881d29bde80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881d29bdf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                        ^
 ffff8881d29bdf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881d29be000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

Crashes (104):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/08/11 20:45 https://github.com/google/kasan.git usb-fuzzer e96407b49762 acb51638 .config console log report syz C ci2-upstream-usb
2019/09/18 20:42 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 46c0be24 .config console log report ci2-upstream-usb
2019/09/18 10:14 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 03e0d245 .config console log report ci2-upstream-usb
2019/09/17 15:27 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 13dcda9b .config console log report ci2-upstream-usb
2019/09/17 09:44 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 51ca0454 .config console log report ci2-upstream-usb
2019/09/16 18:43 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 55c50e70 .config console log report ci2-upstream-usb
2019/09/16 00:52 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 32d59357 .config console log report ci2-upstream-usb
2019/09/15 19:07 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 32d59357 .config console log report ci2-upstream-usb
2019/09/13 19:47 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 32d59357 .config console log report ci2-upstream-usb
2019/09/08 01:18 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 a60cb4cd .config console log report ci2-upstream-usb
2019/09/07 19:36 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 a60cb4cd .config console log report ci2-upstream-usb
2019/09/06 22:30 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 acb5b744 .config console log report ci2-upstream-usb
2019/09/06 17:47 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 acb5b744 .config console log report ci2-upstream-usb
2019/09/05 19:39 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 bf6bcce4 .config console log report ci2-upstream-usb
2019/09/03 09:56 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 14544a56 .config console log report ci2-upstream-usb
2019/09/03 07:42 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 14544a56 .config console log report ci2-upstream-usb
2019/09/03 05:36 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 14544a56 .config console log report ci2-upstream-usb
2019/09/02 08:59 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 db7c31ca .config console log report ci2-upstream-usb
2019/09/02 02:56 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 bad3cce2 .config console log report ci2-upstream-usb
2019/09/01 17:53 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 bad3cce2 .config console log report ci2-upstream-usb
2019/09/01 15:22 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 bad3cce2 .config console log report ci2-upstream-usb
2019/09/01 08:55 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 bad3cce2 .config console log report ci2-upstream-usb
2019/09/01 02:48 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 bad3cce2 .config console log report ci2-upstream-usb
2019/08/31 06:13 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 bcd7bcc2 .config console log report ci2-upstream-usb
2019/08/31 02:32 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 bcd7bcc2 .config console log report ci2-upstream-usb
2019/08/30 14:16 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 9adfa876 .config console log report ci2-upstream-usb
2019/08/30 12:06 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 cd626f3b .config console log report ci2-upstream-usb
2019/08/30 05:26 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 cd626f3b .config console log report ci2-upstream-usb
2019/08/30 02:35 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 cd626f3b .config console log report ci2-upstream-usb
2019/08/29 19:52 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 cd626f3b .config console log report ci2-upstream-usb
2019/08/29 17:48 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 cd626f3b .config console log report ci2-upstream-usb
2019/08/28 23:26 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 40203c15 .config console log report ci2-upstream-usb
2019/08/28 11:45 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 1eb076e9 .config console log report ci2-upstream-usb
2019/08/28 07:20 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 fd37b39e .config console log report ci2-upstream-usb
2019/08/28 01:19 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 fd37b39e .config console log report ci2-upstream-usb
2019/08/26 20:16 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 d21c5d9d .config console log report ci2-upstream-usb
2019/08/26 09:37 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 d21c5d9d .config console log report ci2-upstream-usb
2019/08/26 01:27 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 d21c5d9d .config console log report ci2-upstream-usb
2019/08/25 18:17 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 d21c5d9d .config console log report ci2-upstream-usb
2019/08/25 15:51 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 d21c5d9d .config console log report ci2-upstream-usb
2019/08/24 23:37 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 d21c5d9d .config console log report ci2-upstream-usb
2019/08/24 16:11 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 78ded196 .config console log report ci2-upstream-usb
2019/08/24 11:10 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 78ded196 .config console log report ci2-upstream-usb
2019/08/24 05:44 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 78ded196 .config console log report ci2-upstream-usb
2019/08/24 02:17 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 78ded196 .config console log report ci2-upstream-usb
2019/07/29 21:19 https://github.com/google/kasan.git usb-fuzzer 7f7867ff95bf f67095ee .config console log report ci2-upstream-usb
* Struck through repros no longer work on HEAD.