Title | Replies (including bot) | Last reply |
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[patch net-next] net: genetlink: always allocate separate attrs for dumpit ops, | 2 (2) | 2019/10/09 01:05 |
KASAN: use-after-free Read in tipc_udp_nl_dump_remoteip | 0 (2) | 2019/10/08 21:06 |
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Title | Replies (including bot) | Last reply |
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[patch net-next] net: genetlink: always allocate separate attrs for dumpit ops, | 2 (2) | 2019/10/09 01:05 |
KASAN: use-after-free Read in tipc_udp_nl_dump_remoteip | 0 (2) | 2019/10/08 21:06 |
================================================================== BUG: KASAN: use-after-free in nla_parse_nested_deprecated include/net/netlink.h:1166 [inline] BUG: KASAN: use-after-free in tipc_udp_nl_dump_remoteip+0xc19/0xc20 net/tipc/udp_media.c:459 Read of size 2 at addr ffff888090c0f2d4 by task syz-executor616/8990 CPU: 1 PID: 8990 Comm: syz-executor616 Not tainted 5.4.0-rc1+ #0 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+0x172/0x1f0 lib/dump_stack.c:113 print_address_description.constprop.0.cold+0xd4/0x30b mm/kasan/report.c:374 __kasan_report.cold+0x1b/0x41 mm/kasan/report.c:506 kasan_report+0x12/0x20 mm/kasan/common.c:634 __asan_report_load2_noabort+0x14/0x20 mm/kasan/generic_report.c:130 nla_parse_nested_deprecated include/net/netlink.h:1166 [inline] tipc_udp_nl_dump_remoteip+0xc19/0xc20 net/tipc/udp_media.c:459 genl_lock_dumpit+0x86/0xc0 net/netlink/genetlink.c:529 netlink_dump+0x558/0xfb0 net/netlink/af_netlink.c:2244 __netlink_dump_start+0x5b1/0x7d0 net/netlink/af_netlink.c:2352 genl_family_rcv_msg_dumpit net/netlink/genetlink.c:614 [inline] genl_family_rcv_msg net/netlink/genetlink.c:710 [inline] genl_rcv_msg+0xc9b/0x1000 net/netlink/genetlink.c:730 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:741 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x445279 Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0b cd fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fffac1fc178 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445279 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 0000000000010907 R08: 0000000000000000 R09: 00000000004002e0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402410 R13: 00000000004024a0 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 8992: save_stack+0x23/0x90 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc mm/kasan/common.c:510 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:483 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:524 __do_kmalloc_node mm/slab.c:3615 [inline] __kmalloc_node_track_caller+0x4e/0x70 mm/slab.c:3629 __kmalloc_reserve.isra.0+0x40/0xf0 net/core/skbuff.c:141 __alloc_skb+0x10b/0x5e0 net/core/skbuff.c:209 alloc_skb include/linux/skbuff.h:1049 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1174 [inline] netlink_sendmsg+0x972/0xd60 net/netlink/af_netlink.c:1892 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 8992: save_stack+0x23/0x90 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] kasan_set_free_info mm/kasan/common.c:332 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/common.c:471 kasan_slab_free+0xe/0x10 mm/kasan/common.c:480 __cache_free mm/slab.c:3425 [inline] kfree+0x10a/0x2c0 mm/slab.c:3756 skb_free_head+0x93/0xb0 net/core/skbuff.c:591 skb_release_data+0x42d/0x7c0 net/core/skbuff.c:611 skb_release_all+0x4d/0x60 net/core/skbuff.c:665 __kfree_skb net/core/skbuff.c:679 [inline] consume_skb net/core/skbuff.c:838 [inline] consume_skb+0xfb/0x3b0 net/core/skbuff.c:832 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x539/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff888090c0f2c0 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 20 bytes inside of 512-byte region [ffff888090c0f2c0, ffff888090c0f4c0) The buggy address belongs to the page: page:ffffea00024303c0 refcount:1 mapcount:0 mapping:ffff8880aa400a80 index:0xffff888090c0fa40 flags: 0x1fffc0000000200(slab) raw: 01fffc0000000200 ffffea0002441548 ffffea0002430608 ffff8880aa400a80 raw: ffff888090c0fa40 ffff888090c0f040 0000000100000005 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888090c0f180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888090c0f200: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff888090c0f280: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff888090c0f300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888090c0f380: 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/10/07 04:49 | net-next-old | 056ddc38e941 | f3f7d9c8 | .config | console log | report | syz | C | ci-upstream-net-kasan-gce | |||
2019/10/08 12:58 | net-next-old | 940f13821528 | 28ac6e64 | .config | console log | report | ci-upstream-net-kasan-gce | |||||
2019/10/07 04:21 | net-next-old | 056ddc38e941 | f3f7d9c8 | .config | console log | report | ci-upstream-net-kasan-gce |