KASAN: use-after-free Read in corrupted (3)

Title	Replies (including bot)	Last reply
Reminder: 36 open syzbot bugs in "net/bpf" subsystem	1 (1)	2019/07/03 06:01
KASAN: use-after-free Read in corrupted (3)	0 (2)	2019/06/26 23:55

Title

Replies (including bot)

Last reply

Reminder: 36 open syzbot bugs in "net/bpf" subsystem

1 (1)

2019/07/03 06:01

KASAN: use-after-free Read in corrupted (3)

0 (2)

2019/06/26 23:55

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KASAN: use-after-free Read in corrupted mm	C			2	2402d	2404d	8/28	fixed on 2018/07/09 18:05
linux-4.14	KASAN: use-after-free Read in corrupted	syz		error	1	1017d	1487d	0/1	upstream: reported syz repro on 2020/11/15 10:58
android-414	KASAN: use-after-free Read in corrupted	C			2	1956d	1957d	0/1	public: reported C repro on 2019/08/03 12:36
upstream	KASAN: use-after-free Read in corrupted (2) usb	syz			1	2057d	2057d	0/28	closed as invalid on 2019/04/25 11:05
upstream	KASAN: use-after-free Read in corrupted (4)	C	done	error	13	28d	1583d	0/28	upstream: reported C repro on 2020/08/11 12:47

================================================================== BUG: KASAN: use-after-free in vsnprintf+0x1727/0x19a0 lib/vsprintf.c:2503 Read of size 8 at addr ffff8880952500a0 by task syz-executor.1/9180 CPU: 0 PID: 9180 Comm: syz-executor.1 Not tainted 5.2.0-rc5+ #43 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Allocated by task 8: save_stack+0x23/0x90 mm/kasan/common.c:71 set_track mm/kasan/common.c:79 [inline] __kasan_kmalloc mm/kasan/common.c:489 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:462 kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:497 slab_post_alloc_hook mm/slab.h:437 [inline] slab_alloc mm/slab.c:3326 [inline] kmem_cache_alloc+0x11a/0x6f0 mm/slab.c:3488 vm_area_dup+0x21/0x170 kernel/fork.c:343 dup_mmap kernel/fork.c:528 [inline] dup_mm+0x8c4/0x13b0 kernel/fork.c:1341 copy_mm kernel/fork.c:1397 [inline] copy_process.part.0+0x2cde/0x6790 kernel/fork.c:2032 copy_process kernel/fork.c:1800 [inline] _do_fork+0x25d/0xfe0 kernel/fork.c:2369 __do_sys_clone kernel/fork.c:2476 [inline] __se_sys_clone kernel/fork.c:2470 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2470 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 2502230480: ------------[ cut here ]------------ Bad or missing usercopy whitelist? Kernel memory overwrite attempt detected to SLAB object 'shmem_inode_cache' (offset 1040, size 1)! WARNING: CPU: 0 PID: 9180 at mm/usercopy.c:74 usercopy_warn+0xeb/0x110 mm/usercopy.c:74 Kernel panic - not syncing: panic_on_warn set ... Shutting down cpus with NMI Kernel Offset: disabled