================================================================== 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 ffff8801d97b6ed8 by task syz-executor7/14902 CPU: 1 PID: 14902 Comm: syz-executor7 Not tainted 4.18.0-rc2+ #20 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 compat_keyctl_dh_compute+0x2d0/0x400 security/keys/compat_dh.c:39 __do_compat_sys_keyctl security/keys/compat.c:136 [inline] __se_compat_sys_keyctl security/keys/compat.c:59 [inline] __ia32_compat_sys_keyctl+0x137/0x3b0 security/keys/compat.c:59 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f1ccb9 Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f5f180ac EFLAGS: 00000282 ORIG_RAX: 0000000000000120 RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 0000000020000100 RDX: 0000000020a53ffb RSI: 0000000000000005 RDI: 0000000020c61fc8 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 14902: 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 compat_keyctl_dh_compute+0x2d0/0x400 security/keys/compat_dh.c:39 __do_compat_sys_keyctl security/keys/compat.c:136 [inline] __se_compat_sys_keyctl security/keys/compat.c:59 [inline] __ia32_compat_sys_keyctl+0x137/0x3b0 security/keys/compat.c:59 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 Freed by task 4561: 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 compat_copy_entries_to_user net/ipv4/netfilter/ip_tables.c:1596 [inline] compat_get_entries net/ipv4/netfilter/ip_tables.c:1626 [inline] compat_do_ipt_get_ctl+0x829/0xc90 net/ipv4/netfilter/ip_tables.c:1656 compat_nf_sockopt net/netfilter/nf_sockopt.c:139 [inline] compat_nf_getsockopt+0x9e/0x140 net/netfilter/nf_sockopt.c:163 compat_ip_getsockopt+0x218/0x300 net/ipv4/ip_sockglue.c:1611 inet_csk_compat_getsockopt+0x97/0x120 net/ipv4/inet_connection_sock.c:1023 compat_tcp_getsockopt+0x49/0x80 net/ipv4/tcp.c:3545 compat_sock_common_getsockopt+0xb4/0x150 net/core/sock.c:3010 __compat_sys_getsockopt+0x1b6/0x890 net/compat.c:532 __do_compat_sys_socketcall net/compat.c:916 [inline] __se_compat_sys_socketcall net/compat.c:844 [inline] __ia32_compat_sys_socketcall+0xb35/0x1090 net/compat.c:844 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 The buggy address belongs to the object at ffff8801d97b6ec0 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 24 bytes inside of 32-byte region [ffff8801d97b6ec0, ffff8801d97b6ee0) The buggy address belongs to the page: page:ffffea000765ed80 count:1 mapcount:0 mapping:ffff8801da8001c0 index:0xffff8801d97b6fc1 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea00075bce08 ffffea00075ce088 ffff8801da8001c0 raw: ffff8801d97b6fc1 ffff8801d97b6000 000000010000003b 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d97b6d80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8801d97b6e00: fb fb fb fb fc fc fc fc 00 fc fc fc fc fc fc fc >ffff8801d97b6e80: fb fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc ^ ffff8801d97b6f00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8801d97b6f80: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================