================================================================== BUG: KASAN: slab-out-of-bounds in crypto_morus640_load_a crypto/morus640.c:111 [inline] BUG: KASAN: slab-out-of-bounds in crypto_morus640_decrypt_chunk+0xcf8/0xd20 crypto/morus640.c:278 Read of size 4 at addr ffff8801d76b4e48 by task syz-executor5/13483 CPU: 0 PID: 13483 Comm: syz-executor5 Not tainted 4.18.0-rc1+ #110 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_load4_noabort+0x14/0x20 mm/kasan/report.c:432 crypto_morus640_load_a crypto/morus640.c:111 [inline] crypto_morus640_decrypt_chunk+0xcf8/0xd20 crypto/morus640.c:278 crypto_morus640_process_crypt.isra.12+0x15f/0x250 crypto/morus640.c:376 crypto_morus640_crypt+0x43a/0xa10 crypto/morus640.c:442 crypto_morus640_decrypt+0x23e/0x3d0 crypto/morus640.c:485 crypto_aead_decrypt include/crypto/aead.h:370 [inline] _aead_recvmsg crypto/algif_aead.c:315 [inline] aead_recvmsg+0x13e1/0x1bb0 crypto/algif_aead.c:334 sock_recvmsg_nosec net/socket.c:818 [inline] sock_recvmsg+0xd0/0x110 net/socket.c:825 ___sys_recvmsg+0x2b6/0x680 net/socket.c:2323 __sys_recvmmsg+0x301/0xba0 net/socket.c:2435 do_sys_recvmmsg+0x181/0x1a0 net/socket.c:2511 __do_sys_recvmmsg net/socket.c:2529 [inline] __se_sys_recvmmsg net/socket.c:2525 [inline] __x64_sys_recvmmsg+0xbe/0x150 net/socket.c:2525 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:00007f09bdab9c68 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f09bdaba6d4 RCX: 0000000000455b29 RDX: 0000000000000001 RSI: 0000000020006880 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004c0914 R14: 00000000004d04f8 R15: 0000000000000000 Allocated by task 13483: 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] kzalloc include/linux/slab.h:707 [inline] skcipher_next_slow crypto/skcipher.c:253 [inline] skcipher_walk_next+0x76c/0x1870 crypto/skcipher.c:357 skcipher_walk_first+0x151/0x410 crypto/skcipher.c:442 skcipher_walk_aead_common+0x7f8/0xbc0 crypto/skcipher.c:539 skcipher_walk_aead_decrypt+0xc7/0x100 crypto/skcipher.c:572 crypto_morus640_process_crypt.isra.12+0xa8/0x250 crypto/morus640.c:370 crypto_morus640_crypt+0x43a/0xa10 crypto/morus640.c:442 crypto_morus640_decrypt+0x23e/0x3d0 crypto/morus640.c:485 crypto_aead_decrypt include/crypto/aead.h:370 [inline] _aead_recvmsg crypto/algif_aead.c:315 [inline] aead_recvmsg+0x13e1/0x1bb0 crypto/algif_aead.c:334 sock_recvmsg_nosec net/socket.c:818 [inline] sock_recvmsg+0xd0/0x110 net/socket.c:825 ___sys_recvmsg+0x2b6/0x680 net/socket.c:2323 __sys_recvmmsg+0x301/0xba0 net/socket.c:2435 do_sys_recvmmsg+0x181/0x1a0 net/socket.c:2511 __do_sys_recvmmsg net/socket.c:2529 [inline] __se_sys_recvmmsg net/socket.c:2525 [inline] __x64_sys_recvmmsg+0xbe/0x150 net/socket.c:2525 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 11561: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kfree+0xd9/0x260 mm/slab.c:3813 kvfree+0x61/0x70 mm/util.c:442 __vunmap+0x326/0x460 mm/vmalloc.c:1529 vfree+0x68/0x100 mm/vmalloc.c:1593 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:886 [inline] get_entries net/ipv6/netfilter/ip6_tables.c:1044 [inline] do_ip6t_get_ctl+0xa52/0xc30 net/ipv6/netfilter/ip6_tables.c:1712 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x80/0xe0 net/netfilter/nf_sockopt.c:122 ipv6_getsockopt+0x1f0/0x320 net/ipv6/ipv6_sockglue.c:1370 tcp_getsockopt+0x93/0xe0 net/ipv4/tcp.c:3534 sock_common_getsockopt+0x9a/0xe0 net/core/sock.c:2999 __sys_getsockopt+0x1ad/0x390 net/socket.c:1984 __do_sys_getsockopt net/socket.c:1995 [inline] __se_sys_getsockopt net/socket.c:1992 [inline] __x64_sys_getsockopt+0xbe/0x150 net/socket.c:1992 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8801d76b4e40 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 8 bytes inside of 32-byte region [ffff8801d76b4e40, ffff8801d76b4e60) The buggy address belongs to the page: page:ffffea00075dad00 count:1 mapcount:0 mapping:ffff8801da8001c0 index:0xffff8801d76b4fc1 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea00074cbb48 ffffea00073c9488 ffff8801da8001c0 raw: ffff8801d76b4fc1 ffff8801d76b4000 0000000100000032 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d76b4d00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8801d76b4d80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc >ffff8801d76b4e00: fb fb fb fb fc fc fc fc 00 fc fc fc fc fc fc fc ^ ffff8801d76b4e80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8801d76b4f00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================