{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64461", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.789Z", "datePublished": "2026-07-25T08:51:28.309Z", "dateUpdated": "2026-08-17T04:56:06.127Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:56:06.127Z"}, "descriptions": [{"lang": "en", "value": "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->ports 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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/pci/controller/pcie-mediatek.c"], "versions": [{"version": "b099631df160ec608cd6147f4d20a8042567a5b8", "lessThan": "e23da72ef202654a7d5269885c4fa39a8404db76", "status": "affected", "versionType": "git"}, {"version": "b099631df160ec608cd6147f4d20a8042567a5b8", "lessThan": "ec7c05eed47d8b15c45380aee7ca168a82e15035", "status": "affected", "versionType": "git"}, {"version": "b099631df160ec608cd6147f4d20a8042567a5b8", "lessThan": "1fbe8972a39548a633d06d7b03a01b7b119a2c12", "status": "affected", "versionType": "git"}, {"version": "b099631df160ec608cd6147f4d20a8042567a5b8", "lessThan": "fe8c701a53c2816cd82301f66c671d952003c1b0", "status": "affected", "versionType": "git"}, {"version": "b099631df160ec608cd6147f4d20a8042567a5b8", "lessThan": "ce52e494a7555bdae1d990a2654fd7547ef6d986", "status": "affected", "versionType": "git"}, {"version": "b099631df160ec608cd6147f4d20a8042567a5b8", "lessThan": "6e6a529d6f779413379b4404c9ef6a36c0337225", "status": "affected", "versionType": "git"}, {"version": "b099631df160ec608cd6147f4d20a8042567a5b8", "lessThan": "df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e", "status": "affected", "versionType": "git"}, {"version": "b099631df160ec608cd6147f4d20a8042567a5b8", "lessThan": "f865a57896bd92d7662eb2818d8f48872e2cbbc7", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/pci/controller/pcie-mediatek.c"], "versions": [{"version": "4.14", "status": "affected"}, {"version": "0", "lessThan": "4.14", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76"}, {"url": "https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035"}, {"url": "https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12"}, {"url": "https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0"}, {"url": "https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986"}, {"url": "https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225"}, {"url": "https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e"}, {"url": "https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7"}], "title": "PCI: mediatek: Fix IRQ domain leak when port fails to enable", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/pci/controller/pcie-mediatek.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e23da72ef202654a7d5269885c4fa39a8404db76", "status": "affected", "version": "b099631df160ec608cd6147f4d20a8042567a5b8", "versionType": "git"}, {"lessThan": "ec7c05eed47d8b15c45380aee7ca168a82e15035", "status": "affected", "version": "b099631df160ec608cd6147f4d20a8042567a5b8", "versionType": "git"}, {"lessThan": "1fbe8972a39548a633d06d7b03a01b7b119a2c12", "status": "affected", "version": "b099631df160ec608cd6147f4d20a8042567a5b8", "versionType": "git"}, {"lessThan": "fe8c701a53c2816cd82301f66c671d952003c1b0", "status": "affected", "version": "b099631df160ec608cd6147f4d20a8042567a5b8", "versionType": "git"}, {"lessThan": "ce52e494a7555bdae1d990a2654fd7547ef6d986", "status": "affected", "version": "b099631df160ec608cd6147f4d20a8042567a5b8", "versionType": "git"}, {"lessThan": "6e6a529d6f779413379b4404c9ef6a36c0337225", "status": "affected", "version": "b099631df160ec608cd6147f4d20a8042567a5b8", "versionType": "git"}, {"lessThan": "df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e", "status": "affected", "version": "b099631df160ec608cd6147f4d20a8042567a5b8", "versionType": "git"}, {"lessThan": "f865a57896bd92d7662eb2818d8f48872e2cbbc7", "status": "affected", "version": "b099631df160ec608cd6147f4d20a8042567a5b8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/pci/controller/pcie-mediatek.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.14"}, {"lessThan": "4.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.39", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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->ports 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."}], "id": "CVE-2026-64461", "lastModified": "2026-08-17T05:17:51.347", "metrics": {}, "published": "2026-07-25T10:17:31.293", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: PCI: mediatek: Fix IRQ domain leak when port fails to enable", "id": "2507185", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507185"}, "csaw": false, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's MediaTek PCIe driver. When a Peripheral Component Interconnect Express (PCIe) port fails to enable, the associated Interrupt Request (IRQ) domains are not properly released. This resource leak can accumulate over time, potentially leading to a denial of service (DoS) due to resource exhaustion."], "name": "CVE-2026-64461", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64461\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64461\nhttps://lore.kernel.org/linux-cve-announce/2026072543-CVE-2026-64461-20f5@gregkh/T"]}