pinctrl: mediatek: free EINT resources on unbind
In the Linux kernel, the following vulnerability has been resolved: pinctrl: mediatek: free EINT resources on unbind mtk_eint_do_init() creates an IRQ domain, populates it with a mapping for every EINT line and installs a chained handler on the parent interrupt, but none of these are ever released. This was harmless while the drivers were built-in, but now that they can be built as modules and unbound/rmmod'd it leaves behind a dangling IRQ domain, interrupt mappings whose chip data points at freed memory, and a chained handler that keeps firing into that freed data. The plain allocations in mtk_eint_do_init() already use the device-managed devm_*() helpers, so tear the remaining resources down the same way: register a devm action that detaches the chained handler, waits for any in-flight handler to finish, disposes of the per-line mappings and removes the IRQ domain. This mirrors the device-managed lifecycle adopted for the GPIO chip and keeps the whole EINT setup self-cleaning on unbind.
CVE-2026-92481
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-92481
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "e46df235b4e605aa4e7609a27c118a1cccd4ff9a",
"lessThan": "23252bc1cd9a58a039c9b1ae77b22d2b33da48e9",
"versionType": "git"
},
{
"status": "affected",
"version": "e46df235b4e605aa4e7609a27c118a1cccd4ff9a",
"lessThan": "903a7cdf63a81d3738594c5bd1b5955f58fda427",
"versionType": "git"
},
{
"status": "affected",
"version": "e46df235b4e605aa4e7609a27c118a1cccd4ff9a",
"lessThan": "51552c8c60d3b1fecc062eab2d8cfeaa1cb339dd",
"versionType": "git"
},
{
"status": "affected",
"version": "e46df235b4e605aa4e7609a27c118a1cccd4ff9a",
"lessThan": "7f6d898179ca4771ee602bdad4246c3952af83eb",
"versionType": "git"
},
{
"status": "affected",
"version": "e46df235b4e605aa4e7609a27c118a1cccd4ff9a",
"lessThan": "e06785cba7f86d72abd531058b1a82d6952a7346",
"versionType": "git"
},
{
"status": "affected",
"version": "e46df235b4e605aa4e7609a27c118a1cccd4ff9a",
"lessThan": "88292b7103d260e3e606eb3bb2794060a5fde48e",
"versionType": "git"
}
],
"programFiles": [
"drivers/pinctrl/mediatek/mtk-eint.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/pinctrl/mediatek/mtk-eint.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-92481
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36754 · Revision 1
- Added to Heist Feed
- Publisher date