KASAN: use-after-free Read in bpf_test

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KASAN: use-after-free Read in bpf_test_finish bpf net	C			1211	2103d	2118d	8/26	fixed on 2018/08/07 13:43
android-414	KASAN: use-after-free Read in bpf_test_finish	C			388	1697d	1842d	0/1	public: reported C repro on 2019/04/11 00:00

upstream

KASAN: use-after-free Read in bpf_test_finish bpf net

1211

2103d

2118d

8/26

fixed on 2018/08/07 13:43

android-414

KASAN: use-after-free Read in bpf_test_finish

388

1697d

1842d

0/1

public: reported C repro on 2019/04/11 00:00

Created	Duration	User	Patch	Repo	Result
2023/01/19 23:32	10m	retest repro		linux-4.14.y	report log
2022/09/04 13:27	15m	retest repro		linux-4.14.y	report log

Created

Duration

User

Patch

Repo

Result

2023/01/19 23:32

10m

retest repro

linux-4.14.y

report log

2022/09/04 13:27

15m

retest repro

linux-4.14.y

report log


Created	Duration	User	Repo	Result
2020/07/02 02:55	29m (2)	bisect fix	linux-4.14.y	job log (2)
2020/06/02 02:31	23m	bisect fix	linux-4.14.y	job log (0) log
2020/05/03 02:06	25m	bisect fix	linux-4.14.y	job log (0) log
2020/04/02 22:37	23m	bisect fix	linux-4.14.y	job log (0) log
2020/03/03 22:05	27m	bisect fix	linux-4.14.y	job log (0) log
2020/02/02 20:31	24m	bisect fix	linux-4.14.y	job log (0) log
2020/01/03 18:39	24m	bisect fix	linux-4.14.y	job log (0) log
2019/12/04 18:16	23m	bisect fix	linux-4.14.y	job log (0) log

audit: type=1400 audit(1564829577.213:36): avc: denied { map } for pid=6952 comm="syz-executor429" path="/root/syz-executor429329191" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 ================================================================== BUG: KASAN: use-after-free in _copy_to_user+0xa4/0xd0 lib/usercopy.c:27 Read of size 924 at addr ffff8880747ffff3 by task syz-executor429/6952 CPU: 0 PID: 6952 Comm: syz-executor429 Not tainted 4.14.135 #31 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x19c lib/dump_stack.c:53 print_address_description.cold+0x7c/0x1dc mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report mm/kasan/report.c:409 [inline] kasan_report.cold+0xa9/0x2af mm/kasan/report.c:393 check_memory_region_inline mm/kasan/kasan.c:260 [inline] check_memory_region+0x123/0x190 mm/kasan/kasan.c:267 kasan_check_read+0x11/0x20 mm/kasan/kasan.c:272 _copy_to_user+0xa4/0xd0 lib/usercopy.c:27 copy_to_user include/linux/uaccess.h:155 [inline] bpf_test_finish.isra.0+0xaf/0x150 net/bpf/test_run.c:59 bpf_prog_test_run_skb+0x5af/0x9a0 net/bpf/test_run.c:144 bpf_prog_test_run kernel/bpf/syscall.c:1258 [inline] SYSC_bpf kernel/bpf/syscall.c:1520 [inline] SyS_bpf+0x749/0x38f3 kernel/bpf/syscall.c:1469 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x440379 RSP: 002b:00007ffd82ee9fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379 RDX: 0000000000000028 RSI: 0000000020000140 RDI: 000000000000000a RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401c00 R13: 0000000000401c90 R14: 0000000000000000 R15: 0000000000000000 The buggy address belongs to the page: page:ffffea0001d1ffc0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0x1fffc0000000000() raw: 01fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff raw: ffffea0001d1ffe0 ffffea0001d1ffe0 0000000000000000 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880747ffe80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8880747fff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff8880747fff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888074800000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888074800080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================

Crashes (4):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Manager
2019/08/03 11:06	linux-4.14.y	10d6aa565d05	6affd8e8	.config	console log	report	syz	C	ci2-linux-4-14
2019/08/30 14:46	linux-4.14.y	01fd1694b93c	9adfa876	.config	console log	report			ci2-linux-4-14
2019/08/17 10:47	linux-4.14.y	45f092f9e9cb	8fd428a1	.config	console log	report			ci2-linux-4-14
2019/08/03 10:30	linux-4.14.y	10d6aa565d05	6affd8e8	.config	console log	report			ci2-linux-4-14

Crashes (4):

Assets (help?)