CVE-2023-53148 — linux / linux_kernel
Double FreeIn the Linux kernel, the following vulnerability has been resolved:
igb: Fix igb_down hung on surprise removal
In a setup where a Thunderbolt hub connects to Ethernet and a display through USB Type-C, users may experience a hung task timeout when they remove the cable between the PC and the Thunderbolt hub. This is because the igb_down function is called multiple times when the Thunderbolt hub is unplugged. For example, the igb_io_error_detected triggers the first call, and the igb_remove triggers the second call. The second call to igb_down will block at napi_synchronize. Here's the call trace: __schedule+0x3b0/0xddb ? __mod_timer+0x164/0x5d3 schedule+0x44/0xa8 schedule_timeout+0xb2/0x2a4 ? run_local_timers+0x4e/0x4e msleep+0x31/0x38 igb_down+0x12c/0x22a [igb 6615058754948bfde0bf01429257eb59f13030d4] __igb_close+0x6f/0x9c [igb 6615058754948bfde0bf01429257eb59f13030d4] igb_close+0x23/0x2b [igb 6615058754948bfde0bf01429257eb59f13030d4] __dev_close_many+0x95/0xec dev_close_many+0x6e/0x103 unregister_netdevice_many+0x105/0x5b1 unregister_netdevice_queue+0xc2/0x10d unregister_netdev+0x1c/0x23 igb_remove+0xa7/0x11c [igb 6615058754948bfde0bf01429257eb59f13030d4] pci_device_remove+0x3f/0x9c device_release_driver_internal+0xfe/0x1b4 pci_stop_bus_device+0x5b/0x7f pci_stop_bus_device+0x30/0x7f pci_stop_bus_device+0x30/0x7f pci_stop_and_remove_bus_device+0x12/0x19 pciehp_unconfigure_device+0x76/0xe9 pciehp_disable_slot+0x6e/0x131 pciehp_handle_presence_or_link_change+0x7a/0x3f7 pciehp_ist+0xbe/0x194 irq_thread_fn+0x22/0x4d ? irq_thread+0x1fd/0x1fd irq_thread+0x17b/0x1fd ? irq_forced_thread_fn+0x5f/0x5f kthread+0x142/0x153 ? __irq_get_irqchip_state+0x46/0x46 ? kthread_associate_blkcg+0x71/0x71 ret_from_fork+0x1f/0x30
In this case, igb_io_error_detected detaches the network interface and requests a PCIE slot reset, however, the PCIE reset callback is not being invoked and thus the Ethernet connection breaks down. As the PCIE error in this case is a non-fatal one, requesting a slot reset can be avoided. This patch fixes the task hung issue and preserves Ethernet connection by ignoring non-fatal PCIE errors.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | - | 4.14.322 |
| linux / linux_kernel | 4.15 | 4.19.291 |
| linux / linux_kernel | 4.20 | 5.4.251 |
| linux / linux_kernel | 5.5 | 5.10.188 |
| linux / linux_kernel | 5.11 | 5.15.150 |
| linux / linux_kernel | 5.16 | 6.1.42 |
| linux / linux_kernel | 6.2 | 6.4.7 |
- https://git.kernel.org/stable/c/004d25060c78fc31f66da0fa439c544dda1ac9d5
- https://git.kernel.org/stable/c/124e39a734cb90658b8f0dc110847bbfc6e33792
- https://git.kernel.org/stable/c/39695e87d86f0e7d897fba1d2559f825aa20caeb
- https://git.kernel.org/stable/c/41f63b72a01c0e0ac59ab83fd2d921fcce0f602d
- https://git.kernel.org/stable/c/994c2ceb70ea99264ccc6f09e6703ca267dad63c
- https://git.kernel.org/stable/c/c2312e1d12b1c3ee4100c173131b102e2aed4d04
- https://git.kernel.org/stable/c/c9f56f3c7bc908caa772112d3ae71cdd5d18c257
- https://git.kernel.org/stable/c/fa92c463eba75dcedbd8d689ffdcb83293aaa0c3
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