{"id":"CVE-2026-64461","summary":"PCI: mediatek: Fix IRQ domain leak when port fails to enable","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: mediatek: Fix IRQ domain leak when port fails to enable\n\nWhen mtk_pcie_enable_port() fails, mtk_pcie_port_free() removes the port\nfrom pcie-\u003eports and frees the port structure. However, the IRQ domains set\nup earlier by mtk_pcie_init_irq_domain() are never freed.\n\nFix this by refactoring mtk_pcie_irq_teardown() into a per-port helper,\nmtk_pcie_irq_teardown_port(), and calling it from mtk_pcie_setup() when\nmtk_pcie_enable_port() fails. Since the IRQ teardown must only happen in\nthe probe error path (during resume, child devices may have active MSI\nmappings and the NOIRQ context prohibits sleeping locks),\nmtk_pcie_enable_port() is changed to return an error code so callers can\ndistinguish the two paths and act accordingly.\n\nThis issue was reported by Sashiko while reviewing the EcoNet EN7528 SoC\nsupport series.","modified":"2026-07-27T04:03:22.263619418Z","published":"2026-07-25T08:51:28.309Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64461.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986"},{"type":"WEB","url":"https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64461.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64461"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b099631df160ec608cd6147f4d20a8042567a5b8"},{"fixed":"e23da72ef202654a7d5269885c4fa39a8404db76"},{"fixed":"ec7c05eed47d8b15c45380aee7ca168a82e15035"},{"fixed":"1fbe8972a39548a633d06d7b03a01b7b119a2c12"},{"fixed":"fe8c701a53c2816cd82301f66c671d952003c1b0"},{"fixed":"ce52e494a7555bdae1d990a2654fd7547ef6d986"},{"fixed":"6e6a529d6f779413379b4404c9ef6a36c0337225"},{"fixed":"df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e"},{"fixed":"f865a57896bd92d7662eb2818d8f48872e2cbbc7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64461.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.14.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.39"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64461.json"}}],"schema_version":"1.7.5"}