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🐞 Open [711] 🐞 Fixed [181] 🐞 Invalid [624] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: use-after-free Read in hci_send_acl | C | done | 2 | 709d | 920d | 22/24 | fixed on 2021/11/10 00:50 | |
linux-4.19 | KASAN: use-after-free Read in hci_send_acl | C | done | 3 | 629d | 920d | 1/1 | fixed on 2021/06/23 17:43 |
Created | Duration | User | Patch | Repo | Result |
---|---|---|---|---|---|
2022/12/03 00:30 | 12m | retest repro | linux-4.14.y | report log |
Bluetooth: Wrong link type (-22) Bluetooth: Wrong link type (-22) Bluetooth: Wrong link type (-22) Bluetooth: Wrong link type (-22) ================================================================== BUG: KASAN: use-after-free in hci_send_acl+0xac8/0xc60 net/bluetooth/hci_core.c:3540 Read of size 8 at addr ffff88809d80b558 by task kworker/u5:1/6383 CPU: 0 PID: 6383 Comm: kworker/u5:1 Not tainted 4.14.192-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: hci0 hci_rx_work Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252 kasan_report_error.cold+0x8a/0x194 mm/kasan/report.c:351 kasan_report mm/kasan/report.c:409 [inline] __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430 hci_send_acl+0xac8/0xc60 net/bluetooth/hci_core.c:3540 l2cap_send_cmd+0x19d/0x1f0 net/bluetooth/l2cap_core.c:874 l2cap_information_req net/bluetooth/l2cap_core.c:4450 [inline] l2cap_bredr_sig_cmd net/bluetooth/l2cap_core.c:5442 [inline] l2cap_sig_channel net/bluetooth/l2cap_core.c:5793 [inline] l2cap_recv_frame+0x1261/0x95c0 net/bluetooth/l2cap_core.c:7017 l2cap_recv_acldata+0x7a6/0x8b0 net/bluetooth/l2cap_core.c:7588 hci_acldata_packet net/bluetooth/hci_core.c:4066 [inline] hci_rx_work+0x3d1/0x970 net/bluetooth/hci_core.c:4249 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Allocated by task 1202: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 kmem_cache_alloc_trace+0x131/0x3d0 mm/slab.c:3618 kmalloc include/linux/slab.h:488 [inline] kzalloc include/linux/slab.h:661 [inline] hci_chan_create+0x7c/0x300 net/bluetooth/hci_conn.c:1532 l2cap_conn_add.part.0+0x18/0xc20 net/bluetooth/l2cap_core.c:7056 l2cap_conn_add net/bluetooth/l2cap_core.c:7415 [inline] l2cap_connect_cfm+0x1d2/0xce0 net/bluetooth/l2cap_core.c:7373 hci_connect_cfm include/net/bluetooth/hci_core.h:1211 [inline] hci_remote_features_evt net/bluetooth/hci_event.c:2753 [inline] hci_event_packet+0x1eb3/0x7c7a net/bluetooth/hci_event.c:5310 hci_rx_work+0x3e6/0x970 net/bluetooth/hci_core.c:4244 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Freed by task 6383: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kfree+0xc9/0x250 mm/slab.c:3815 hci_disconn_loglink_complete_evt net/bluetooth/hci_event.c:4433 [inline] hci_event_packet+0xeae/0x7c7a net/bluetooth/hci_event.c:5437 hci_rx_work+0x3e6/0x970 net/bluetooth/hci_core.c:4244 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 The buggy address belongs to the object at ffff88809d80b540 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 24 bytes inside of 128-byte region [ffff88809d80b540, ffff88809d80b5c0) The buggy address belongs to the page: page:ffffea00027602c0 count:1 mapcount:0 mapping:ffff88809d80b000 index:0x0 flags: 0xfffe0000000100(slab) raw: 00fffe0000000100 ffff88809d80b000 0000000000000000 0000000100000015 raw: ffffea000277c3e0 ffffea00027675a0 ffff88812fe52640 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809d80b400: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff88809d80b480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88809d80b500: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff88809d80b580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88809d80b600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================
Manager | Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
ci2-linux-4-14 | 2020/08/06 07:53 | linux-4.14.y | ca4f2c56d416 | 0487ea6f | .config | console log | report | syz | C | |||
ci2-linux-4-14 | 2020/08/02 14:47 | linux-4.14.y | 7f2c5eb458b8 | 96dd3623 | .config | console log | report | syz | C | |||
ci2-linux-4-14 | 2021/01/25 03:00 | linux-4.14.y | 2d2791fce891 | 52e37319 | .config | console log | report | info | KASAN: use-after-free Read in hci_send_acl | |||
ci2-linux-4-14 | 2020/08/07 14:40 | linux-4.14.y | 14b58326976d | 28ac5c9e | .config | console log | report |