{"api_version":"1","generated_at":"2026-10-01T05:18:54+00:00","cve":"CVE-2026-92481","urls":{"html":"https://cve.report/CVE-2026-92481","api":"https://cve.report/api/cve/CVE-2026-92481.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-92481","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-92481"},"summary":{"title":"pinctrl: mediatek: free EINT resources on unbind","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: mediatek: free EINT resources on unbind\n\nmtk_eint_do_init() creates an IRQ domain, populates it with a mapping for\nevery EINT line and installs a chained handler on the parent interrupt,\nbut none of these are ever released. This was harmless while the drivers\nwere built-in, but now that they can be built as modules and\nunbound/rmmod'd it leaves behind a dangling IRQ domain, interrupt mappings\nwhose chip data points at freed memory, and a chained handler that keeps\nfiring into that freed data.\n\nThe plain allocations in mtk_eint_do_init() already use the device-managed\ndevm_*() helpers, so tear the remaining resources down the same way:\nregister a devm action that detaches the chained handler, waits for any\nin-flight handler to finish, disposes of the per-line mappings and removes\nthe IRQ domain. This mirrors the device-managed lifecycle adopted for the\nGPIO chip and keeps the whole EINT setup self-cleaning on unbind.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:50","updated_at":"2026-09-17 17:17:50"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/88292b7103d260e3e606eb3bb2794060a5fde48e","name":"https://git.kernel.org/stable/c/88292b7103d260e3e606eb3bb2794060a5fde48e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7f6d898179ca4771ee602bdad4246c3952af83eb","name":"https://git.kernel.org/stable/c/7f6d898179ca4771ee602bdad4246c3952af83eb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/903a7cdf63a81d3738594c5bd1b5955f58fda427","name":"https://git.kernel.org/stable/c/903a7cdf63a81d3738594c5bd1b5955f58fda427","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/23252bc1cd9a58a039c9b1ae77b22d2b33da48e9","name":"https://git.kernel.org/stable/c/23252bc1cd9a58a039c9b1ae77b22d2b33da48e9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e06785cba7f86d72abd531058b1a82d6952a7346","name":"https://git.kernel.org/stable/c/e06785cba7f86d72abd531058b1a82d6952a7346","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/51552c8c60d3b1fecc062eab2d8cfeaa1cb339dd","name":"https://git.kernel.org/stable/c/51552c8c60d3b1fecc062eab2d8cfeaa1cb339dd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92481","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92481","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e46df235b4e605aa4e7609a27c118a1cccd4ff9a 23252bc1cd9a58a039c9b1ae77b22d2b33da48e9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e46df235b4e605aa4e7609a27c118a1cccd4ff9a 903a7cdf63a81d3738594c5bd1b5955f58fda427 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e46df235b4e605aa4e7609a27c118a1cccd4ff9a 51552c8c60d3b1fecc062eab2d8cfeaa1cb339dd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e46df235b4e605aa4e7609a27c118a1cccd4ff9a 7f6d898179ca4771ee602bdad4246c3952af83eb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e46df235b4e605aa4e7609a27c118a1cccd4ff9a e06785cba7f86d72abd531058b1a82d6952a7346 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e46df235b4e605aa4e7609a27c118a1cccd4ff9a 88292b7103d260e3e606eb3bb2794060a5fde48e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"92481","cve":"CVE-2026-92481","epss":"0.002050000","percentile":"0.109500000","score_date":"2026-09-18","updated_at":"2026-09-19 00:06:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/pinctrl/mediatek/mtk-eint.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"23252bc1cd9a58a039c9b1ae77b22d2b33da48e9","status":"affected","version":"e46df235b4e605aa4e7609a27c118a1cccd4ff9a","versionType":"git"},{"lessThan":"903a7cdf63a81d3738594c5bd1b5955f58fda427","status":"affected","version":"e46df235b4e605aa4e7609a27c118a1cccd4ff9a","versionType":"git"},{"lessThan":"51552c8c60d3b1fecc062eab2d8cfeaa1cb339dd","status":"affected","version":"e46df235b4e605aa4e7609a27c118a1cccd4ff9a","versionType":"git"},{"lessThan":"7f6d898179ca4771ee602bdad4246c3952af83eb","status":"affected","version":"e46df235b4e605aa4e7609a27c118a1cccd4ff9a","versionType":"git"},{"lessThan":"e06785cba7f86d72abd531058b1a82d6952a7346","status":"affected","version":"e46df235b4e605aa4e7609a27c118a1cccd4ff9a","versionType":"git"},{"lessThan":"88292b7103d260e3e606eb3bb2794060a5fde48e","status":"affected","version":"e46df235b4e605aa4e7609a27c118a1cccd4ff9a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/pinctrl/mediatek/mtk-eint.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.18"},{"lessThan":"4.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"4.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"4.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"4.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"4.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"4.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"4.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: mediatek: free EINT resources on unbind\n\nmtk_eint_do_init() creates an IRQ domain, populates it with a mapping for\nevery EINT line and installs a chained handler on the parent interrupt,\nbut none of these are ever released. This was harmless while the drivers\nwere built-in, but now that they can be built as modules and\nunbound/rmmod'd it leaves behind a dangling IRQ domain, interrupt mappings\nwhose chip data points at freed memory, and a chained handler that keeps\nfiring into that freed data.\n\nThe plain allocations in mtk_eint_do_init() already use the device-managed\ndevm_*() helpers, so tear the remaining resources down the same way:\nregister a devm action that detaches the chained handler, waits for any\nin-flight handler to finish, disposes of the per-line mappings and removes\nthe IRQ domain. This mirrors the device-managed lifecycle adopted for the\nGPIO chip and keeps the whole EINT setup self-cleaning on unbind."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:09:58.378Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/23252bc1cd9a58a039c9b1ae77b22d2b33da48e9"},{"url":"https://git.kernel.org/stable/c/903a7cdf63a81d3738594c5bd1b5955f58fda427"},{"url":"https://git.kernel.org/stable/c/51552c8c60d3b1fecc062eab2d8cfeaa1cb339dd"},{"url":"https://git.kernel.org/stable/c/7f6d898179ca4771ee602bdad4246c3952af83eb"},{"url":"https://git.kernel.org/stable/c/e06785cba7f86d72abd531058b1a82d6952a7346"},{"url":"https://git.kernel.org/stable/c/88292b7103d260e3e606eb3bb2794060a5fde48e"}],"title":"pinctrl: mediatek: free EINT resources on unbind","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-92481","datePublished":"2026-09-17T16:09:58.378Z","dateReserved":"2026-09-16T12:21:13.870Z","dateUpdated":"2026-09-17T16:09:58.378Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:50","lastModifiedDate":"2026-09-17 17:17:50","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"92481","Ordinal":"1","Title":"pinctrl: mediatek: free EINT resources on unbind","CVE":"CVE-2026-92481","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"92481","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: mediatek: free EINT resources on unbind\n\nmtk_eint_do_init() creates an IRQ domain, populates it with a mapping for\nevery EINT line and installs a chained handler on the parent interrupt,\nbut none of these are ever released. This was harmless while the drivers\nwere built-in, but now that they can be built as modules and\nunbound/rmmod'd it leaves behind a dangling IRQ domain, interrupt mappings\nwhose chip data points at freed memory, and a chained handler that keeps\nfiring into that freed data.\n\nThe plain allocations in mtk_eint_do_init() already use the device-managed\ndevm_*() helpers, so tear the remaining resources down the same way:\nregister a devm action that detaches the chained handler, waits for any\nin-flight handler to finish, disposes of the per-line mappings and removes\nthe IRQ domain. This mirrors the device-managed lifecycle adopted for the\nGPIO chip and keeps the whole EINT setup self-cleaning on unbind.","Type":"Description","Title":"pinctrl: mediatek: free EINT resources on unbind"}]}}}