Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:[EOL][EOL]Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync[EOL][EOL]This fixes the following UFA in hci_acl_create_conn_sync where a[EOL]connection still pending is command submission (conn->state == BT_OPEN)[EOL]maybe freed, also since this also can happen with the likes of[EOL]hci_le_create_conn_sync fix it as well:[EOL][EOL]BUG: KASAN: slab-use-after-free in hci_acl_create_conn_sync+0x5ef/0x790 net/bluetooth/hci_sync.c:6861[EOL]Write of size 2 at addr ffff88805ffcc038 by task kworker/u11:2/9541[EOL][EOL]CPU: 1 UID: 0 PID: 9541 Comm: kworker/u11:2 Not tainted 6.16.0-rc7 #3 PREEMPT(full)[EOL]Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014[EOL]Workqueue: hci3 hci_cmd_sync_work[EOL]Call Trace:[EOL] <TASK>[EOL] dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120[EOL] print_address_description mm/kasan/report.c:378 [inline][EOL] print_report+0xca/0x230 mm/kasan/report.c:480[EOL] kasan_report+0x118/0x150 mm/kasan/report.c:593[EOL] hci_acl_create_conn_sync+0x5ef/0x790 net/bluetooth/hci_sync.c:6861[EOL] hci_cmd_sync_work+0x210/0x3a0 net/bluetooth/hci_sync.c:332[EOL] process_one_work kernel/workqueue.c:3238 [inline][EOL] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321[EOL] worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402[EOL] kthread+0x70e/0x8a0 kernel/kthread.c:464[EOL] ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148[EOL] ret_from_fork_asm+0x1a/0x30 home/kwqcheii/source/fuzzing/kernel/kasan/linux-6.16-rc7/arch/x86/entry/entry_64.S:245[EOL] </TASK>[EOL][EOL]Allocated by task 123736:[EOL] kasan_save_stack mm/kasan/common.c:47 [inline][EOL] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68[EOL] poison_kmalloc_redzone mm/kasan/common.c:377 [inline][EOL] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394[EOL] kasan_kmalloc include/linux/kasan.h:260 [inline][EOL] __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4359[EOL] kmalloc_noprof include/linux/slab.h:905 [inline][EOL] kzalloc_noprof include/linux/slab.h:1039 [inline][EOL] __hci_conn_add+0x233/0x1b30 net/bluetooth/hci_conn.c:939[EOL] hci_conn_add_unset net/bluetooth/hci_conn.c:1051 [inline][EOL] hci_connect_acl+0x16c/0x4e0 net/bluetooth/hci_conn.c:1634[EOL] pair_device+0x418/0xa70 net/bluetooth/mgmt.c:3556[EOL] hci_mgmt_cmd+0x9c9/0xef0 net/bluetooth/hci_sock.c:1719[EOL] hci_sock_sendmsg+0x6ca/0xef0 net/bluetooth/hci_sock.c:1839[EOL] sock_sendmsg_nosec net/socket.c:712 [inline][EOL] __sock_sendmsg+0x219/0x270 net/socket.c:727[EOL] sock_write_iter+0x258/0x330 net/socket.c:1131[EOL] new_sync_write fs/read_write.c:593 [inline][EOL] vfs_write+0x54b/0xa90 fs/read_write.c:686[EOL] ksys_write+0x145/0x250 fs/read_write.c:738[EOL] do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline][EOL] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94[EOL] entry_SYSCALL_64_after_hwframe+0x77/0x7f[EOL][EOL]Freed by task 103680:[EOL] kasan_save_stack mm/kasan/common.c:47 [inline][EOL] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68[EOL] kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576[EOL] poison_slab_object mm/kasan/common.c:247 [inline][EOL] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264[EOL] kasan_slab_free include/linux/kasan.h:233 [inline][EOL] slab_free_hook mm/slub.c:2381 [inline][EOL] slab_free mm/slub.c:4643 [inline][EOL] kfree+0x18e/0x440 mm/slub.c:4842[EOL] device_release+0x9c/0x1c0[EOL] kobject_cleanup lib/kobject.c:689 [inline][EOL] kobject_release lib/kobject.c:720 [inline][EOL] kref_put include/linux/kref.h:65 [inline][EOL] kobject_put+0x22b/0x480 lib/kobject.c:737[EOL] hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline][EOL] hci_conn_del+0x8ff/0xcb0 net/bluetooth/hci_conn.c:1173[EOL] hci_conn_complete_evt+0x3c7/0x1040 net/bluetooth/hci_event.c:3199[EOL] hci_event_func net/bluetooth/hci_event.c:7477 [inline][EOL] hci_event_packet+0x7e0/0x1200 net/bluetooth/hci_event.c:7531[EOL] hci_rx_work+0x46a/0xe80 net/bluetooth/hci_core.c:4070[EOL] process_one_work kernel/workqueue.c:3238 [inline][EOL] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321[EOL] worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402[EOL] kthread+0x70e/0x8a0 kernel/kthread.c:464[EOL] ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148[EOL] ret_from_fork_asm+0x1a/0x30 home/kwqcheii/sour[EOL]---truncated---