CVE-2026-64461

In the Linux kernel, the following vulnerability has been resolved: PCI: mediatek: Fix IRQ domain leak when port fails to enable When mtk_pcie_enable_port() fails, mtk_pcie_port_free() removes the port from pcie->ports and frees the port structure. However, the IRQ domains set up earlier by mtk_pcie_init_irq_domain() are never freed. Fix this by refactoring mtk_pcie_irq_teardown() into a per-port helper, mtk_pcie_irq_teardown_port(), and calling it from mtk_pcie_setup() when mtk_pcie_enable_port() fails. Since the IRQ teardown must only happen in the probe error path (during resume, child devices may have active MSI mappings and the NOIRQ context prohibits sleeping locks), mtk_pcie_enable_port() is changed to return an error code so callers can distinguish the two paths and act accordingly. This issue was reported by Sashiko while reviewing the EcoNet EN7528 SoC support series.

• git.kernel.orghttps://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12
• git.kernel.orghttps://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225
• git.kernel.orghttps://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986
• git.kernel.orghttps://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e
• git.kernel.orghttps://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76
• git.kernel.orghttps://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035
• git.kernel.orghttps://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7
• git.kernel.orghttps://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0

No related CVEs by CWE or product.