Messages in this thread | | | Subject | Re: [PATCH net v2] net: caif: Fix use-after-free in cfusbl_device_notify() | From | patchwork-bot+netdevbpf@kernel ... | Date | Fri, 03 Mar 2023 06:30:18 +0000 |
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Hello:
This patch was applied to netdev/net.git (main) by Jakub Kicinski <kuba@kernel.org>:
On Thu, 2 Mar 2023 01:39:13 +0900 you wrote: > syzbot reported use-after-free in cfusbl_device_notify() [1]. This > causes a stack trace like below: > > BUG: KASAN: use-after-free in cfusbl_device_notify+0x7c9/0x870 net/caif/caif_usb.c:138 > Read of size 8 at addr ffff88807ac4e6f0 by task kworker/u4:6/1214 > > CPU: 0 PID: 1214 Comm: kworker/u4:6 Not tainted 5.19.0-rc3-syzkaller-00146-g92f20ff72066 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Workqueue: netns cleanup_net > Call Trace: > <TASK> > __dump_stack lib/dump_stack.c:88 [inline] > dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 > print_address_description.constprop.0.cold+0xeb/0x467 mm/kasan/report.c:313 > print_report mm/kasan/report.c:429 [inline] > kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491 > cfusbl_device_notify+0x7c9/0x870 net/caif/caif_usb.c:138 > notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1945 > call_netdevice_notifiers_extack net/core/dev.c:1983 [inline] > call_netdevice_notifiers net/core/dev.c:1997 [inline] > netdev_wait_allrefs_any net/core/dev.c:10227 [inline] > netdev_run_todo+0xbc0/0x10f0 net/core/dev.c:10341 > default_device_exit_batch+0x44e/0x590 net/core/dev.c:11334 > ops_exit_list+0x125/0x170 net/core/net_namespace.c:167 > cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:594 > process_one_work+0x996/0x1610 kernel/workqueue.c:2289 > worker_thread+0x665/0x1080 kernel/workqueue.c:2436 > kthread+0x2e9/0x3a0 kernel/kthread.c:376 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 > </TASK> > > [...]
Here is the summary with links: - [net,v2] net: caif: Fix use-after-free in cfusbl_device_notify() https://git.kernel.org/netdev/net/c/9781e98a9711
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