Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: use-after-free Read in sctp_association_free (2) sctp | C | 2 | 2409d | 2409d | 5/28 | fixed on 2018/05/08 18:30 |
syzbot |
sign-in | mailing list | source | docs |
================================================================== BUG: KASAN: use-after-free in sctp_association_free+0x7b7/0x930 net/sctp/associola.c:333 Read of size 8 at addr ffff8801d21d4720 by task syzkaller504854/3007 CPU: 0 PID: 3007 Comm: syzkaller504854 Not tainted 4.14.0-rc6+ #62 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 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_load8_noabort+0x14/0x20 mm/kasan/report.c:430 sctp_association_free+0x7b7/0x930 net/sctp/associola.c:333 sctp_sendmsg+0x2311/0x31f0 net/sctp/socket.c:2011 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 SYSC_sendto+0x352/0x5a0 net/socket.c:1750 SyS_sendto+0x40/0x50 net/socket.c:1718 do_syscall_32_irqs_on arch/x86/entry/common.c:329 [inline] do_fast_syscall_32+0x3f2/0xf05 arch/x86/entry/common.c:391 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124 RIP: 0023:0xf7fd2c79 RSP: 002b:00000000f5fca1ec EFLAGS: 00000292 ORIG_RAX: 0000000000000171 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020925000 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000209e1000 RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 3007: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 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:3627 kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:666 [inline] sctp_association_new+0x114/0x21e0 net/sctp/associola.c:309 sctp_sendmsg+0x128c/0x31f0 net/sctp/socket.c:1838 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 SYSC_sendto+0x352/0x5a0 net/socket.c:1750 SyS_sendto+0x40/0x50 net/socket.c:1718 do_syscall_32_irqs_on arch/x86/entry/common.c:329 [inline] do_fast_syscall_32+0x3f2/0xf05 arch/x86/entry/common.c:391 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124 Freed by task 3007: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 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:3503 [inline] kfree+0xca/0x250 mm/slab.c:3820 sctp_association_destroy net/sctp/associola.c:435 [inline] sctp_association_put+0x21c/0x2f0 net/sctp/associola.c:884 sctp_wait_for_sndbuf+0x5e3/0x7c0 net/sctp/socket.c:7836 sctp_sendmsg+0x2750/0x31f0 net/sctp/socket.c:1935 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 SYSC_sendto+0x352/0x5a0 net/socket.c:1750 SyS_sendto+0x40/0x50 net/socket.c:1718 do_syscall_32_irqs_on arch/x86/entry/common.c:329 [inline] do_fast_syscall_32+0x3f2/0xf05 arch/x86/entry/common.c:391 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124 The buggy address belongs to the object at ffff8801d21d4700 which belongs to the cache kmalloc-4096 of size 4096 The buggy address is located 32 bytes inside of 4096-byte region [ffff8801d21d4700, ffff8801d21d5700) The buggy address belongs to the page: page:ffffea0007487500 count:1 mapcount:0 mapping:ffff8801d21d4700 index:0x0 compound_mapcount: 0 flags: 0x200000000008100(slab|head) raw: 0200000000008100 ffff8801d21d4700 0000000000000000 0000000100000001 raw: ffffea0007487420 ffff8801dac01a48 ffff8801dac00dc0 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d21d4600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8801d21d4680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8801d21d4700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801d21d4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801d21d4800: 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2017/10/29 18:58 | upstream | 25a5d23b4799 | 80c74880 | .config | console log | report | syz | C | ci-upstream-kasan-gce | |||
2017/10/29 18:57 | upstream | 25a5d23b4799 | 80c74880 | .config | console log | report | syz | C | ci-upstream-kasan-gce | |||
2017/10/29 18:56 | net-next-old | aad93c70b9a3 | 80c74880 | .config | console log | report | syz | C | ci-upstream-net-kasan-gce | |||
2017/10/30 01:04 | linux-next | 36ef71cae353 | e511d9f8 | .config | console log | report | syz | C | ci-upstream-next-kasan-gce | |||
2017/10/29 18:57 | mmots | 0f611fb6dcc0 | e0a2b195 | .config | console log | report | syz | C | ci-upstream-mmots-kasan-gce | |||
2017/10/29 18:39 | linux-next | 36ef71cae353 | e511d9f8 | .config | console log | report | syz | C | ci-upstream-next-kasan-gce | |||
2017/11/08 05:27 | upstream | fbc3edf7d773 | 9547ae3a | .config | console log | report | ci-upstream-kasan-gce | |||||
2017/10/23 01:35 | net-next-old | f8ddadc4db6c | ab829b1b | .config | console log | report | ci-upstream-net-kasan-gce | |||||
2017/11/17 01:56 | linux-next | 785be731fbc6 | 348d8f13 | .config | console log | report | ci-upstream-next-kasan-gce | |||||
2017/11/15 00:34 | linux-next | c9b945f2a731 | cf38de00 | .config | console log | report | ci-upstream-next-kasan-gce | |||||
2017/11/14 02:46 | linux-next | c348a99ee55f | f9a8d567 | .config | console log | report | ci-upstream-next-kasan-gce | |||||
2017/11/13 23:15 | linux-next | c348a99ee55f | f9a8d567 | .config | console log | report | ci-upstream-next-kasan-gce | |||||
2017/11/12 01:15 | linux-next | d9e0e63d9a6f | e0a2b195 | .config | console log | report | ci-upstream-next-kasan-gce | |||||
2017/11/10 21:52 | linux-next | d9e0e63d9a6f | e0a2b195 | .config | console log | report | ci-upstream-next-kasan-gce | |||||
2017/11/10 15:26 | linux-next | d9e0e63d9a6f | e0a2b195 | .config | console log | report | ci-upstream-next-kasan-gce | |||||
2017/11/10 01:24 | linux-next | 5515cf16e270 | e0a2b195 | .config | console log | report | ci-upstream-next-kasan-gce | |||||
2017/11/03 02:28 | linux-next | fa8785e862ef | 02b8363d | .config | console log | report | skylake-linux-next-kasan-qemu | |||||
2017/11/01 08:50 | linux-next | 36ef71cae353 | e511d9f8 | .config | console log | report | ci-upstream-next-kasan-gce | |||||
2017/10/31 22:33 | linux-next | 36ef71cae353 | e511d9f8 | .config | console log | report | ci-upstream-next-kasan-gce | |||||
2017/10/29 17:31 | linux-next | 36ef71cae353 | e511d9f8 | .config | console log | report | ci-upstream-next-kasan-gce |