Skip to content
CVE PROGRAM SOURCE RECORDUnscored

CVE-2021-47424

i40e: Fix freeing of uninitialized misc IRQ vector

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix freeing of uninitialized misc IRQ vector When VSI set up failed in i40e_probe() as part of PF switch set up driver was trying to free misc IRQ vectors in i40e_clear_interrupt_scheme and produced a kernel Oops: Trying to free already-free IRQ 266 WARNING: CPU: 0 PID: 5 at kernel/irq/manage.c:1731 __free_irq+0x9a/0x300 Workqueue: events work_for_cpu_fn RIP: 0010:__free_irq+0x9a/0x300 Call Trace: ? synchronize_irq+0x3a/0xa0 free_irq+0x2e/0x60 i40e_clear_interrupt_scheme+0x53/0x190 [i40e] i40e_probe.part.108+0x134b/0x1a40 [i40e] ? kmem_cache_alloc+0x158/0x1c0 ? acpi_ut_update_ref_count.part.1+0x8e/0x345 ? acpi_ut_update_object_reference+0x15e/0x1e2 ? strstr+0x21/0x70 ? irq_get_irq_data+0xa/0x20 ? mp_check_pin_attr+0x13/0xc0 ? irq_get_irq_data+0xa/0x20 ? mp_map_pin_to_irq+0xd3/0x2f0 ? acpi_register_gsi_ioapic+0x93/0x170 ? pci_conf1_read+0xa4/0x100 ? pci_bus_read_config_word+0x49/0x70 ? do_pci_enable_device+0xcc/0x100 local_pci_probe+0x41/0x90 work_for_cpu_fn+0x16/0x20 process_one_work+0x1a7/0x360 worker_thread+0x1cf/0x390 ? create_worker+0x1a0/0x1a0 kthread+0x112/0x130 ? kthread_flush_work_fn+0x10/0x10 ret_from_fork+0x1f/0x40 The problem is that at that point misc IRQ vectors were not allocated yet and we get a call trace that driver is trying to free already free IRQ vectors. Add a check in i40e_clear_interrupt_scheme for __I40E_MISC_IRQ_REQUESTED PF state before calling i40e_free_misc_vector. This state is set only if misc IRQ vectors were properly initialized.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • c17401a1dd210a5f22ab1ec7c7366037c158a14c to < 60ad4cde0ad28921f9ea25b0201c774b95ffa4b4affected
  • c17401a1dd210a5f22ab1ec7c7366037c158a14c to < 17063cac4088b8e2fc0f633abddca5426ed58312affected
  • c17401a1dd210a5f22ab1ec7c7366037c158a14c to < 97aeed72af4f83ae51534f0a2473ff52f8d66236affected
  • c17401a1dd210a5f22ab1ec7c7366037c158a14c to < 75099439209d3cda439a1d9b00d19a50f0066fefaffected
  • c17401a1dd210a5f22ab1ec7c7366037c158a14c to < 2e5a20573a926302b233b0c2e1077f5debc7ab2eaffected

Linux Linux

Default version status: affected

  • 4.15affected
  • 0 to < 4.15unaffected
  • 4.19.211 to ≤ 4.19.*unaffected
  • 5.4.153 to ≤ 5.4.*unaffected
  • 5.10.73 to ≤ 5.10.*unaffected
  • 5.14.12 to ≤ 5.14.*unaffected
  • 5.15 to ≤ *unaffected

References