CVE-2024-56561

Summary

In the Linux kernel, the following vulnerability has been resolved:

PCI: endpoint: Fix PCI domain ID release in pci_epc_destroy()

pci_epc_destroy() invokes pci_bus_release_domain_nr() to release the PCI domain ID, but there are two issues:

  • 'epc->dev' is passed to pci_bus_release_domain_nr() which was already freed by device_unregister(), leading to a use-after-free issue.

  • Domain ID corresponds to the EPC device parent, so passing 'epc->dev' is also wrong.

Fix these issues by passing 'epc->dev.parent' to pci_bus_release_domain_nr() and also do it before device_unregister().

[mani: reworded subject and description]

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0328947c50324cf4b2d8b181bf948edb8101f59f < c74a1df6c2a2df7dd45c3fc1a5edc29a075dcf22affected
LinuxLinux0328947c50324cf4b2d8b181bf948edb8101f59f < 4acc902ed3743edd4ac2d3846604a99d17104359affected
LinuxLinuxa4934cd7a18d35fc57025f23773f6f19e2b2dbb1affected
LinuxLinux6.11.4 < 6.12affected
LinuxLinux6.12affected
LinuxLinux0 < 6.12unaffected
LinuxLinux6.12.4 <= 6.12.*unaffected
LinuxLinux6.13 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References