{"id":"CVE-2026-92481","title":"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 handl…","summary":"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 handl…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= e46df235b4e605aa4e7609a27c118a1cccd4ff9a < 23252bc1cd9a58a039c9b1ae77b22d2b33da48e9","Linux >= e46df235b4e605aa4e7609a27c118a1cccd4ff9a < 903a7cdf63a81d3738594c5bd1b5955f58fda427","Linux >= e46df235b4e605aa4e7609a27c118a1cccd4ff9a < 51552c8c60d3b1fecc062eab2d8cfeaa1cb339dd","Linux >= e46df235b4e605aa4e7609a27c118a1cccd4ff9a < 7f6d898179ca4771ee602bdad4246c3952af83eb","Linux >= e46df235b4e605aa4e7609a27c118a1cccd4ff9a < e06785cba7f86d72abd531058b1a82d6952a7346","Linux >= e46df235b4e605aa4e7609a27c118a1cccd4ff9a < 88292b7103d260e3e606eb3bb2794060a5fde48e","Linux 4.18"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:50.153","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92481","references":[{"url":"https://git.kernel.org/stable/c/23252bc1cd9a58a039c9b1ae77b22d2b33da48e9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/51552c8c60d3b1fecc062eab2d8cfeaa1cb339dd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7f6d898179ca4771ee602bdad4246c3952af83eb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/88292b7103d260e3e606eb3bb2794060a5fde48e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/903a7cdf63a81d3738594c5bd1b5955f58fda427","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e06785cba7f86d72abd531058b1a82d6952a7346","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.788Z","epss":0.00215,"epssPercentile":0.10558,"slug":"CVE-2026-92481","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}