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KASAN: use-after-free Write in xt_rateest_put | 1 (2) | 2018/05/12 08:39 |
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KASAN: use-after-free Write in xt_rateest_put | 1 (2) | 2018/05/12 08:39 |
================================================================== BUG: KASAN: use-after-free in __hlist_del include/linux/list.h:651 [inline] BUG: KASAN: use-after-free in hlist_del include/linux/list.h:656 [inline] BUG: KASAN: use-after-free in xt_rateest_put+0x2e3/0x300 net/netfilter/xt_RATEEST.c:65 Write of size 8 at addr ffff8801ae8f3a58 by task syzkaller187615/4170 CPU: 0 PID: 4170 Comm: syzkaller187615 Not tainted 4.15.0+ #286 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 print_address_description+0x73/0x250 mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report+0x25b/0x340 mm/kasan/report.c:409 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:435 __hlist_del include/linux/list.h:651 [inline] hlist_del include/linux/list.h:656 [inline] xt_rateest_put+0x2e3/0x300 net/netfilter/xt_RATEEST.c:65 xt_rateest_tg_destroy+0x50/0x70 net/netfilter/xt_RATEEST.c:154 cleanup_entry+0x242/0x380 net/ipv6/netfilter/ip6_tables.c:678 __do_replace+0x7e6/0xab0 net/ipv6/netfilter/ip6_tables.c:1115 do_replace net/ipv6/netfilter/ip6_tables.c:1171 [inline] do_ip6t_set_ctl+0x40f/0x5f0 net/ipv6/netfilter/ip6_tables.c:1693 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115 ipv6_setsockopt+0x115/0x150 net/ipv6/ipv6_sockglue.c:928 udpv6_setsockopt+0x45/0x80 net/ipv6/udp.c:1452 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2968 SYSC_setsockopt net/socket.c:1831 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1810 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x4412d9 RSP: 002b:00007ffff250e918 EFLAGS: 00000207 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00000000004412d9 RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000136 RBP: f6fcce9cd855ec40 R08: 00000000000003b8 R09: 0000000000000000 R10: 0000000020019c48 R11: 0000000000000207 R12: fbfe5b6031634428 R13: 5826b2d59f7fe9a1 R14: fd7217c033abf8b5 R15: 0000000000000000 Allocated by task 4164: save_stack+0x43/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551 kmem_cache_alloc_trace+0x136/0x750 mm/slab.c:3610 kmalloc include/linux/slab.h:499 [inline] kzalloc include/linux/slab.h:688 [inline] xt_rateest_tg_checkentry+0x25a/0xaa0 net/netfilter/xt_RATEEST.c:120 xt_check_target+0x22c/0x7d0 net/netfilter/x_tables.c:845 check_target net/ipv6/netfilter/ip6_tables.c:538 [inline] find_check_entry.isra.7+0x935/0xcf0 net/ipv6/netfilter/ip6_tables.c:580 translate_table+0xf52/0x1690 net/ipv6/netfilter/ip6_tables.c:749 do_replace net/ipv6/netfilter/ip6_tables.c:1167 [inline] do_ip6t_set_ctl+0x370/0x5f0 net/ipv6/netfilter/ip6_tables.c:1693 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115 ipv6_setsockopt+0x115/0x150 net/ipv6/ipv6_sockglue.c:928 udpv6_setsockopt+0x45/0x80 net/ipv6/udp.c:1452 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2968 SYSC_setsockopt net/socket.c:1831 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1810 entry_SYSCALL_64_fastpath+0x29/0xa0 Freed by task 4169: save_stack+0x43/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3488 [inline] kfree+0xd6/0x260 mm/slab.c:3803 __rcu_reclaim kernel/rcu/rcu.h:190 [inline] rcu_do_batch kernel/rcu/tree.c:2758 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:3012 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2979 [inline] rcu_process_callbacks+0xe94/0x17f0 kernel/rcu/tree.c:2996 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285 The buggy address belongs to the object at ffff8801ae8f3a00 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 88 bytes inside of 192-byte region [ffff8801ae8f3a00, ffff8801ae8f3ac0) The buggy address belongs to the page: page:ffffea0006ba3cc0 count:1 mapcount:0 mapping:ffff8801ae8f3000 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffff8801ae8f3000 0000000000000000 0000000100000010 raw: ffffea0006ba2fe0 ffffea0006bcf820 ffff8801db000040 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801ae8f3900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801ae8f3980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8801ae8f3a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801ae8f3a80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8801ae8f3b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2018/01/30 20:44 | upstream | 6304672b7f0a | a899be78 | .config | console log | report | syz | C | ci-upstream-kasan-gce | |||
2018/01/30 16:17 | upstream | 6304672b7f0a | a899be78 | .config | console log | report | syz | C | ci-upstream-kasan-gce | |||
2018/01/29 15:11 | upstream | d8a5b80568a9 | 08d47756 | .config | console log | report | syz | C | ci-upstream-kasan-gce | |||
2018/01/29 10:21 | upstream | 24b1cccf9229 | 08d47756 | .config | console log | report | syz | C | ci-upstream-kasan-gce | |||
2018/01/30 16:16 | net-next-old | 91e6dd828425 | a899be78 | .config | console log | report | syz | C | ci-upstream-net-kasan-gce | |||
2018/01/30 04:25 | net-next-old | 3e3ab9ccca5b | 08d47756 | .config | console log | report | syz | C | ci-upstream-net-kasan-gce | |||
2018/01/29 15:46 | net-next-old | 868c36dcc949 | 08d47756 | .config | console log | report | syz | C | ci-upstream-net-kasan-gce |