================================================================== 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 ffff8801b671d9a4 by task syz-executor5/14028 CPU: 0 PID: 14028 Comm: syz-executor5 Not tainted 4.17.0+ #106 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:00007fe2c186fc68 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 00007fe2c18706d4 RCX: 0000000000455b29 RDX: 0000000020001a00 RSI: 0000000020000140 RDI: 0000000000000017 RBP: 000000000072bea0 R08: 0000000020000100 R09: 0000000000000000 R10: 000000000000009d R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004bfd31 R14: 00000000004ceb30 R15: 0000000000000000 Allocated by task 14028: 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 12704: 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 kzfree+0x28/0x30 mm/slab_common.c:1539 crypto_destroy_tfm+0x158/0x300 crypto/api.c:584 crypto_free_ahash include/crypto/hash.h:263 [inline] crypto_authenc_esn_exit_tfm+0x35/0x80 crypto/authencesn.c:391 crypto_aead_exit_tfm+0x59/0x70 crypto/aead.c:95 crypto_exit_ops crypto/api.c:324 [inline] crypto_destroy_tfm+0xbb/0x300 crypto/api.c:582 crypto_free_aead include/crypto/aead.h:193 [inline] aead_release+0x30/0x50 crypto/algif_aead.c:510 alg_do_release crypto/af_alg.c:119 [inline] alg_sock_destruct+0x92/0xe0 crypto/af_alg.c:361 __sk_destruct+0x107/0xa60 net/core/sock.c:1573 sk_destruct+0x78/0x90 net/core/sock.c:1608 __sk_free+0xcf/0x300 net/core/sock.c:1619 sk_free+0x42/0x50 net/core/sock.c:1630 sock_put include/net/sock.h:1667 [inline] af_alg_release+0x6e/0x90 crypto/af_alg.c:126 __sock_release+0xd7/0x260 net/socket.c:603 sock_close+0x19/0x20 net/socket.c:1186 __fput+0x35b/0x8b0 fs/file_table.c:209 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x1ec/0x2a0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x1b08/0x2750 kernel/exit.c:865 do_group_exit+0x177/0x440 kernel/exit.c:968 get_signal+0x88e/0x1970 kernel/signal.c:2468 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x2de/0x370 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8801b671d900 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 164 bytes inside of 192-byte region [ffff8801b671d900, ffff8801b671d9c0) The buggy address belongs to the page: page:ffffea0006d9c740 count:1 mapcount:0 mapping:ffff8801da800040 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea0005d18708 ffffea00075ee848 ffff8801da800040 raw: 0000000000000000 ffff8801b671d000 0000000100000010 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801b671d880: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff8801b671d900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801b671d980: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8801b671da00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801b671da80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================