Title | Replies (including bot) | Last reply |
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KASAN: use-after-free Read in tipc_nl_publ_dump (2) | 1 (2) | 2020/06/30 03:45 |
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KASAN: use-after-free Read in tipc_nl_publ_dump (2) | 1 (2) | 2020/06/30 03:45 |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: use-after-free Read in tipc_nl_publ_dump tipc | C | 2 | 1859d | 1859d | 15/28 | fixed on 2019/12/13 00:31 |
netlink: 8 bytes leftover after parsing attributes in process `syz-executor007'. ================================================================== BUG: KASAN: use-after-free in nla_len include/net/netlink.h:1135 [inline] BUG: KASAN: use-after-free in nla_parse_nested_deprecated include/net/netlink.h:1218 [inline] BUG: KASAN: use-after-free in tipc_nl_publ_dump+0xae0/0xce0 net/tipc/socket.c:3766 Read of size 2 at addr ffff8880a7ee0284 by task syz-executor007/6830 CPU: 0 PID: 6830 Comm: syz-executor007 Not tainted 5.8.0-rc2-syzkaller #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+0x18f/0x20d lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xae/0x436 mm/kasan/report.c:383 __kasan_report mm/kasan/report.c:513 [inline] kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530 nla_len include/net/netlink.h:1135 [inline] nla_parse_nested_deprecated include/net/netlink.h:1218 [inline] tipc_nl_publ_dump+0xae0/0xce0 net/tipc/socket.c:3766 genl_lock_dumpit+0x7f/0xb0 net/netlink/genetlink.c:575 netlink_dump+0x4cd/0xf60 net/netlink/af_netlink.c:2245 __netlink_dump_start+0x643/0x900 net/netlink/af_netlink.c:2353 genl_family_rcv_msg_dumpit+0x2ac/0x310 net/netlink/genetlink.c:638 genl_family_rcv_msg net/netlink/genetlink.c:733 [inline] genl_rcv_msg+0x797/0x9e0 net/netlink/genetlink.c:753 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2469 genl_rcv+0x24/0x40 net/netlink/genetlink.c:764 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2352 ___sys_sendmsg+0xf3/0x170 net/socket.c:2406 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x445f09 Code: Bad RIP value. RSP: 002b:00007fffb147d488 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445f09 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000004 RBP: 00000000006d0018 R08: 0000000000000000 R09: 00000000004002e0 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004030a0 R13: 0000000000403130 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 6828: save_stack+0x1b/0x40 mm/kasan/common.c:48 set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:494 __kmalloc_reserve net/core/skbuff.c:142 [inline] __alloc_skb+0xae/0x550 net/core/skbuff.c:210 alloc_skb include/linux/skbuff.h:1083 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1175 [inline] netlink_sendmsg+0x94f/0xd90 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2352 ___sys_sendmsg+0xf3/0x170 net/socket.c:2406 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 6828: save_stack+0x1b/0x40 mm/kasan/common.c:48 set_track mm/kasan/common.c:56 [inline] kasan_set_free_info mm/kasan/common.c:316 [inline] __kasan_slab_free+0xf5/0x140 mm/kasan/common.c:455 __cache_free mm/slab.c:3426 [inline] kfree+0x103/0x2c0 mm/slab.c:3757 skb_free_head net/core/skbuff.c:590 [inline] skb_release_data+0x6d9/0x910 net/core/skbuff.c:610 skb_release_all net/core/skbuff.c:664 [inline] __kfree_skb net/core/skbuff.c:678 [inline] consume_skb net/core/skbuff.c:837 [inline] consume_skb+0xc2/0x160 net/core/skbuff.c:831 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x53b/0x7d0 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2352 ___sys_sendmsg+0xf3/0x170 net/socket.c:2406 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The buggy address belongs to the object at ffff8880a7ee0000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 644 bytes inside of 1024-byte region [ffff8880a7ee0000, ffff8880a7ee0400) The buggy address belongs to the page: page:ffffea00029fb800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 flags: 0xfffe0000000200(slab) raw: 00fffe0000000200 ffffea000278a308 ffffea00025273c8 ffff8880aa000c40 raw: 0000000000000000 ffff8880a7ee0000 0000000100000002 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880a7ee0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880a7ee0200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880a7ee0280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880a7ee0300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880a7ee0380: 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/06/29 04:18 | upstream | 4e99b32169e8 | a2cdad9d | .config | console log | report | syz | C | ci-upstream-kasan-gce-root | |||
2020/06/29 03:34 | upstream | 4e99b32169e8 | a2cdad9d | .config | console log | report | syz | C | ci-upstream-kasan-gce-selinux-root | |||
2020/06/29 03:33 | upstream | 4e99b32169e8 | a2cdad9d | .config | console log | report | syz | C | ci-upstream-kasan-gce | |||
2020/06/29 03:33 | upstream | 4e99b32169e8 | a2cdad9d | .config | console log | report | syz | C | ci-upstream-kasan-gce-smack-root | |||
2020/06/29 03:41 | upstream | 4e99b32169e8 | a2cdad9d | .config | console log | report | syz | C | ci-upstream-kasan-gce-386 | |||
2020/06/29 04:48 | net-old | 0574e2000fc3 | a2cdad9d | .config | console log | report | syz | C | ci-upstream-net-this-kasan-gce | |||
2020/06/29 03:09 | net-next-old | b08866f42a87 | a2cdad9d | .config | console log | report | syz | C | ci-upstream-net-kasan-gce | |||
2020/06/29 03:36 | linux-next | 36e3135df4d4 | a2cdad9d | .config | console log | report | syz | C | ci-upstream-linux-next-kasan-gce-root | |||
2020/07/07 03:30 | upstream | 7cc2a8ea1048 | 51095195 | .config | console log | report | ci-upstream-kasan-gce | |||||
2020/07/06 16:27 | upstream | 7cc2a8ea1048 | 51095195 | .config | console log | report | ci-upstream-kasan-gce-smack-root | |||||
2020/07/05 22:49 | upstream | 7cc2a8ea1048 | 51095195 | .config | console log | report | ci-upstream-kasan-gce-selinux-root | |||||
2020/07/05 17:19 | upstream | 7cc2a8ea1048 | 51095195 | .config | console log | report | ci-upstream-kasan-gce-386 | |||||
2020/07/11 02:35 | net-next-old | a594920f8747 | 18d18b59 | .config | console log | report | ci-upstream-net-kasan-gce | |||||
2020/06/29 02:37 | net-next-old | b08866f42a87 | a2cdad9d | .config | console log | report | ci-upstream-net-kasan-gce |