kernel msg: ebtables bug: please report to author: Wrong len argument ================================================================== BUG: KASAN: slab-out-of-bounds in put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] BUG: KASAN: slab-out-of-bounds in crypto_sha3_final+0x449/0x450 crypto/sha3_generic.c:238 Write of size 4 at addr ffff8801b5a588a4 by task syz-executor6/20589 CPU: 0 PID: 20589 Comm: syz-executor6 Not tainted 4.18.0-rc1+ #108 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+0x1c9/0x2b4 lib/dump_stack.c:113 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 __asan_report_store4_noabort+0x17/0x20 mm/kasan/report.c:437 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] crypto_sha3_final+0x449/0x450 crypto/sha3_generic.c:238 crypto_shash_final+0x104/0x260 crypto/shash.c:152 kdf_ctr security/keys/dh.c:186 [inline] keyctl_dh_compute_kdf security/keys/dh.c:217 [inline] __keyctl_dh_compute+0x1198/0x1be0 security/keys/dh.c:389 keyctl_dh_compute+0xc5/0x11f security/keys/dh.c:425 __do_sys_keyctl security/keys/keyctl.c:1741 [inline] __se_sys_keyctl security/keys/keyctl.c:1637 [inline] __x64_sys_keyctl+0x12a/0x3b0 security/keys/keyctl.c:1637 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455b29 Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb2811f3c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 00007fb2811f46d4 RCX: 0000000000455b29 RDX: 0000000020000240 RSI: 00000000200019c0 RDI: 0000000000000017 RBP: 000000000072bea0 R08: 0000000020001b40 R09: 0000000000000000 R10: 000000000000009d R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004bfd31 R14: 00000000004cee10 R15: 0000000000000000 Allocated by task 20589: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553 __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x14e/0x760 mm/slab.c:3727 kmalloc include/linux/slab.h:518 [inline] keyctl_dh_compute_kdf security/keys/dh.c:211 [inline] __keyctl_dh_compute+0x1000/0x1be0 security/keys/dh.c:389 keyctl_dh_compute+0xc5/0x11f security/keys/dh.c:425 __do_sys_keyctl security/keys/keyctl.c:1741 [inline] __se_sys_keyctl security/keys/keyctl.c:1637 [inline] __x64_sys_keyctl+0x12a/0x3b0 security/keys/keyctl.c:1637 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 0: (stack is not available) The buggy address belongs to the object at ffff8801b5a58800 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 164 bytes inside of 192-byte region [ffff8801b5a58800, ffff8801b5a588c0) The buggy address belongs to the page: page:ffffea0006d69600 count:1 mapcount:0 mapping:ffff8801da800040 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea000609e088 ffff8801da801148 ffff8801da800040 raw: 0000000000000000 ffff8801b5a58000 0000000100000010 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801b5a58780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8801b5a58800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801b5a58880: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8801b5a58900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801b5a58980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================