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

Title	Replies (including bot)	Last reply
[PATCH 4.19 00/78] 4.19.146-rc1 review	95 (95)	2020/09/23 18:57
[PATCH 4.14 00/94] 4.14.199-rc1 review	97 (97)	2020/09/22 20:18
[PATCH 4.9 00/70] 4.9.237-rc1 review	73 (73)	2020/09/22 20:17
[PATCH 5.8 000/177] 5.8.10-rc1 review	196 (196)	2020/09/17 17:40
[PATCH 5.4 000/132] 5.4.66-rc1 review	139 (139)	2020/09/15 16:41
[PATCH] usb: core: fix slab-out-of-bounds Read in read_descriptors	1 (1)	2020/09/04 06:37
[PATCH] USB: core: limit access to rawdescriptors which were not allocated	5 (5)	2020/08/26 06:56
KASAN: slab-out-of-bounds Read in read_descriptors (2)	0 (1)	2020/08/25 06:03

Title

Replies (including bot)

Last reply

[PATCH 4.19 00/78] 4.19.146-rc1 review

95 (95)

2020/09/23 18:57

[PATCH 4.14 00/94] 4.14.199-rc1 review

97 (97)

2020/09/22 20:18

[PATCH 4.9 00/70] 4.9.237-rc1 review

73 (73)

2020/09/22 20:17

[PATCH 5.8 000/177] 5.8.10-rc1 review

196 (196)

2020/09/17 17:40

[PATCH 5.4 000/132] 5.4.66-rc1 review

139 (139)

2020/09/15 16:41

[PATCH] usb: core: fix slab-out-of-bounds Read in read_descriptors

1 (1)

2020/09/04 06:37

[PATCH] USB: core: limit access to rawdescriptors which were not allocated

5 (5)

2020/08/26 06:56

KASAN: slab-out-of-bounds Read in read_descriptors (2)

0 (1)

2020/08/25 06:03

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	KASAN: slab-out-of-bounds Read in read_descriptors origin:upstream	C		error	1	270d	314d	0/3	auto-obsoleted due to no activity on 2023/11/08 10:43
linux-5.15	KASAN: slab-out-of-bounds Read in read_descriptors origin:upstream missing-backport	C		error	2	224d	314d	0/3	upstream: reported C repro on 2023/06/17 08:07
upstream	KASAN: slab-out-of-bounds Read in read_descriptors usb				1	1650d	1648d	0/26	auto-closed as invalid on 2020/02/18 03:02
upstream	KASAN: slab-out-of-bounds Read in read_descriptors (3) usb	C	error		7	284d	312d	23/26	fixed on 2023/10/12 12:48

================================================================== BUG: KASAN: slab-out-of-bounds in read_descriptors+0x25f/0x280 drivers/usb/core/sysfs.c:903 Read of size 8 at addr ffff88809100b848 by task systemd-udevd/22769 CPU: 1 PID: 22769 Comm: systemd-udevd Not tainted 5.9.0-rc1-syzkaller #0 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+0x18f/0x20d lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xae/0x497 mm/kasan/report.c:383 __kasan_report mm/kasan/report.c:513 [inline] kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530 read_descriptors+0x25f/0x280 drivers/usb/core/sysfs.c:903 sysfs_kf_bin_read+0x196/0x270 fs/sysfs/file.c:99 kernfs_file_direct_read fs/kernfs/file.c:213 [inline] kernfs_fop_read+0x2eb/0x590 fs/kernfs/file.c:253 vfs_read+0x1df/0x5a0 fs/read_write.c:479 ksys_read+0x12d/0x250 fs/read_write.c:607 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f6f8ba80210 Code: 73 01 c3 48 8b 0d 98 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d b9 c1 20 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24 RSP: 002b:00007ffecd2e3168 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00005600a56b04a0 RCX: 00007f6f8ba80210 RDX: 0000000000010011 RSI: 00007ffecd2e3190 RDI: 0000000000000007 RBP: 0000000000000000 R08: 00005600a56b5d00 R09: 0000000000000001 R10: 0000000000000073 R11: 0000000000000246 R12: 00005600a56a6690 R13: 0000000000000007 R14: 00007ffecd2e3190 R15: 0000000000000000 Allocated by task 29772: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461 __do_kmalloc mm/slab.c:3655 [inline] __kmalloc+0x1a8/0x320 mm/slab.c:3664 kmalloc include/linux/slab.h:559 [inline] kzalloc include/linux/slab.h:666 [inline] usb_get_configuration+0x186/0x3840 drivers/usb/core/config.c:887 usb_enumerate_device drivers/usb/core/hub.c:2387 [inline] usb_new_device+0x387/0x6d0 drivers/usb/core/hub.c:2523 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x2033/0x3e40 drivers/usb/core/hub.c:5576 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 The buggy address belongs to the object at ffff88809100b840 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 8 bytes inside of 32-byte region [ffff88809100b840, ffff88809100b860) The buggy address belongs to the page: page:00000000227ef938 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88809100bfc1 pfn:0x9100b flags: 0xfffe0000000200(slab) raw: 00fffe0000000200 ffffea00015c1948 ffffea00007fcd88 ffff8880aa040100 raw: ffff88809100bfc1 ffff88809100b000 000000010000003f 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809100b700: 05 fc fc fc fc fc fc fc fa fb fb fb fc fc fc fc ffff88809100b780: 05 fc fc fc fc fc fc fc fa fb fb fb fc fc fc fc >ffff88809100b800: 06 fc fc fc fc fc fc fc 00 fc fc fc fc fc fc fc ^ ffff88809100b880: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc ffff88809100b900: 00 05 fc fc fc fc fc fc 05 fc fc fc fc fc fc fc ==================================================================