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| Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| upstream | KASAN: use-after-free Read in route4_get net | 19 | C | 8 | 1916d | 1946d | 15/29 | fixed on 2020/05/10 10:41 | ||
| linux-4.14 | KASAN: use-after-free Read in route4_get | 19 | syz | error | 3 | 1870d | 1954d | 0/1 | upstream: reported syz repro on 2020/03/05 03:16 | |
| linux-4.19 | KASAN: use-after-free Read in route4_get | 19 | 7 | 1935d | 1942d | 0/1 | auto-closed as invalid on 2020/07/22 04:44 |
| Created | Duration | User | Patch | Repo | Result |
|---|---|---|---|---|---|
| 2021/11/12 06:52 | 16m | bisect fix | linux-4.19.y | error job log | |
| 2021/10/13 06:09 | 35m | bisect fix | linux-4.19.y | OK (0) job log log |
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready ================================================================== BUG: KASAN: use-after-free in route4_get+0x3e1/0x420 net/sched/cls_route.c:239 Read of size 4 at addr ffff88809f730e40 by task syz-executor497/9517 CPU: 1 PID: 9517 Comm: syz-executor497 Not tainted 4.19.206-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+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load4_noabort+0x88/0x90 mm/kasan/report.c:432 route4_get+0x3e1/0x420 net/sched/cls_route.c:239 tc_new_tfilter+0x535/0x16c0 net/sched/cls_api.c:1300 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2457 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1911 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227 __sys_sendmsg net/socket.c:2265 [inline] __do_sys_sendmsg net/socket.c:2274 [inline] __se_sys_sendmsg net/socket.c:2272 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x449799 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 00 00 90 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f924dcaa318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004cf508 RCX: 0000000000449799 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000004 RBP: 00000000004cf500 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 000000000049e49c R13: 00007ffcb51bdfdf R14: 00007f924dcaa400 R15: 0000000000022000 Allocated by task 9517: kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] route4_change+0x2a5/0x22a0 net/sched/cls_route.c:495 tc_new_tfilter+0xb52/0x16c0 net/sched/cls_api.c:1320 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2457 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1911 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227 __sys_sendmsg net/socket.c:2265 [inline] __do_sys_sendmsg net/socket.c:2274 [inline] __se_sys_sendmsg net/socket.c:2272 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 2888: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 route4_delete_filter_work+0x17/0x20 net/sched/cls_route.c:270 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 The buggy address belongs to the object at ffff88809f730e00 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 64 bytes inside of 192-byte region [ffff88809f730e00, ffff88809f730ec0) The buggy address belongs to the page: page:ffffea00027dcc00 count:1 mapcount:0 mapping:ffff88813bff0040 index:0x0 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea00023dd9c8 ffffea00027bfe88 ffff88813bff0040 raw: 0000000000000000 ffff88809f730000 0000000100000010 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809f730d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88809f730d80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff88809f730e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88809f730e80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88809f730f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021/09/13 06:09 | linux-4.19.y | b172b44fcb17 | 3ce60af8 | .config | console log | report | syz | C | ci2-linux-4-19 | KASAN: use-after-free Read in route4_get | ||
| 2021/09/12 17:57 | linux-4.19.y | b172b44fcb17 | 3ce60af8 | .config | console log | report | syz | ci2-linux-4-19 | KASAN: use-after-free Read in route4_get |