{"api_version":"1","generated_at":"2026-08-02T01:11:17+00:00","cve":"CVE-2026-64461","urls":{"html":"https://cve.report/CVE-2026-64461","api":"https://cve.report/api/cve/CVE-2026-64461.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64461","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64461"},"summary":{"title":"PCI: mediatek: Fix IRQ domain leak when port fails to enable","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:31","updated_at":"2026-07-25 10:17:31"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035","name":"https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7","name":"https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e","name":"https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76","name":"https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986","name":"https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0","name":"https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225","name":"https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12","name":"https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64461","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64461","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b099631df160ec608cd6147f4d20a8042567a5b8 e23da72ef202654a7d5269885c4fa39a8404db76 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b099631df160ec608cd6147f4d20a8042567a5b8 ec7c05eed47d8b15c45380aee7ca168a82e15035 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b099631df160ec608cd6147f4d20a8042567a5b8 1fbe8972a39548a633d06d7b03a01b7b119a2c12 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b099631df160ec608cd6147f4d20a8042567a5b8 fe8c701a53c2816cd82301f66c671d952003c1b0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64461","cve":"CVE-2026-64461","epss":"0.001840000","percentile":"0.083470000","score_date":"2026-07-28","updated_at":"2026-07-29 00:05:33"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"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-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"4.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-07-25T08:51:28.309Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64461","datePublished":"2026-07-25T08:51:28.309Z","dateReserved":"2026-07-19T15:36:31.789Z","dateUpdated":"2026-07-25T08:51:28.309Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:31","lastModifiedDate":"2026-07-25 10:17:31","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64461","Ordinal":"1","Title":"PCI: mediatek: Fix IRQ domain leak when port fails to enable","CVE":"CVE-2026-64461","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64461","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"PCI: mediatek: Fix IRQ domain leak when port fails to enable"}]}}}