CVE-2024-47751 — PCI: kirin: Fix buffer overflow in kirin_pcie_parse_port()

Affected: Linux

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

PCI: kirin: Fix buffer overflow in kirin_pcie_parse_port()

Within kirin_pcie_parse_port(), the pcie->num_slots is compared to pcie->gpio_id_reset size (MAX_PCI_SLOTS) which is correct and would lead to an overflow.

Thus, fix condition to pcie->num_slots + 1 >= MAX_PCI_SLOTS and move pcie->num_slots increment below the if-statement to avoid out-of-bounds array access.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

[kwilczynski: commit log]

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CVE-2024-47751 — PCI: kirin: Fix buffer overflow in kirin_pcie_parse_port()