================================================================== BUG: KASAN: slab-out-of-bounds in put_unaligned_be32 include/linux/unaligned/access_ok.h:60 [inline] BUG: KASAN: slab-out-of-bounds in sha1_base_finish include/crypto/sha1_base.h:102 [inline] BUG: KASAN: slab-out-of-bounds in sha1_finup+0x44e/0x4b0 arch/x86/crypto/sha1_ssse3_glue.c:70 Write of size 4 at addr ffff8801c5889ed4 by task syz-executor4/9947 CPU: 1 PID: 9947 Comm: syz-executor4 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_be32 include/linux/unaligned/access_ok.h:60 [inline] sha1_base_finish include/crypto/sha1_base.h:102 [inline] sha1_finup+0x44e/0x4b0 arch/x86/crypto/sha1_ssse3_glue.c:70 sha1_avx2_finup arch/x86/crypto/sha1_ssse3_glue.c:232 [inline] sha1_avx2_final+0x28/0x30 arch/x86/crypto/sha1_ssse3_glue.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:00007fd629a9ac68 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 00007fd629a9b6d4 RCX: 0000000000455b29 RDX: 0000000020000140 RSI: 0000000020000080 RDI: 0000000000000017 RBP: 000000000072bea0 R08: 0000000020000280 R09: 0000000000000000 R10: 0000000000000384 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004bfd31 R14: 00000000004ceb30 R15: 0000000000000000 Allocated by task 9947: 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 8902: 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 skb_free_head+0x99/0xc0 net/core/skbuff.c:550 pskb_expand_head+0x3b9/0x10e0 net/core/skbuff.c:1494 netlink_trim+0x2ea/0x380 net/netlink/af_netlink.c:1292 netlink_broadcast_filtered+0x105/0x1630 net/netlink/af_netlink.c:1489 netlink_broadcast net/netlink/af_netlink.c:1534 [inline] nlmsg_multicast include/net/netlink.h:591 [inline] nlmsg_notify+0xa0/0x1a0 net/netlink/af_netlink.c:2491 rtnl_notify+0xce/0xf0 net/core/rtnetlink.c:732 rtmsg_fib+0x369/0x4d0 net/ipv4/fib_semantics.c:428 fib_table_insert+0x7a8/0x17a0 net/ipv4/fib_trie.c:1287 fib_magic.isra.22+0x66b/0x890 net/ipv4/fib_frontend.c:885 fib_add_ifaddr+0x382/0x500 net/ipv4/fib_frontend.c:920 fib_inetaddr_event+0x172/0x222 net/ipv4/fib_frontend.c:1219 notifier_call_chain+0x180/0x390 kernel/notifier.c:93 __blocking_notifier_call_chain kernel/notifier.c:317 [inline] blocking_notifier_call_chain+0x147/0x190 kernel/notifier.c:328 __inet_insert_ifa+0x858/0xba0 net/ipv4/devinet.c:519 inet_rtm_newaddr+0xe92/0x13b0 net/ipv4/devinet.c:910 rtnetlink_rcv_msg+0x46e/0xc30 net/core/rtnetlink.c:4662 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2448 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4680 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a0/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfd0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:645 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:655 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2161 __sys_sendmsg+0x11d/0x290 net/socket.c:2199 __do_sys_sendmsg net/socket.c:2208 [inline] __se_sys_sendmsg net/socket.c:2206 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2206 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 ffff8801c5889b40 which belongs to the cache kmalloc-1024 of size 1024 The buggy address is located 916 bytes inside of 1024-byte region [ffff8801c5889b40, ffff8801c5889f40) The buggy address belongs to the page: page:ffffea0007162200 count:1 mapcount:0 mapping:ffff8801da800ac0 index:0x0 compound_mapcount: 0 flags: 0x2fffc0000008100(slab|head) raw: 02fffc0000008100 ffffea00075b1308 ffffea0006a83288 ffff8801da800ac0 raw: 0000000000000000 ffff8801c5888040 0000000100000007 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801c5889d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801c5889e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801c5889e80: 00 00 00 00 00 00 00 00 00 00 04 fc fc fc fc fc ^ ffff8801c5889f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8801c5889f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================