clk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path
In the Linux kernel, the following vulnerability has been resolved: clk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path When mtk_clk_register_pllfhs function fails to register a PLL, it unregisters all PLLs and cleans up itself in its error path before returning, so the function callers don't need to do it. But contrary to mtk_clk_unregister_pllfhs function, that does almost the same sequence, it does not free the IO memory mapped on fhctl node, leading to a leak. Fix this leak by factorizing the cleanup sequence in a new private function and use it both mtk_clk_register_pllfhs and mtk_clk_unregister_pllfhs functions. Also, change the loop index start value to avoid the -1 operation on index at each loop.
CVE-2026-90422
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-2026-90422
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": "d7964de8a8ea800910fdd4e365c42a9e7d5c54aa",
"lessThan": "6e3e93bc718c4fea556d7ca5fba07ab3511c9918",
"versionType": "git"
},
{
"status": "affected",
"version": "d7964de8a8ea800910fdd4e365c42a9e7d5c54aa",
"lessThan": "111235106099019b8a8d1947dc5c2674e0329ffa",
"versionType": "git"
},
{
"status": "affected",
"version": "d7964de8a8ea800910fdd4e365c42a9e7d5c54aa",
"lessThan": "d35e45e5bad4fabcf122126402b6c6dcb4379672",
"versionType": "git"
},
{
"status": "affected",
"version": "d7964de8a8ea800910fdd4e365c42a9e7d5c54aa",
"lessThan": "fea0b4fd891a2af77b55e05b950e7ea55b5d234e",
"versionType": "git"
},
{
"status": "affected",
"version": "d7964de8a8ea800910fdd4e365c42a9e7d5c54aa",
"lessThan": "540d91480bcb1b28a62d7023aa70947ea44c55b9",
"versionType": "git"
}
],
"programFiles": [
"drivers/clk/mediatek/clk-pllfh.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"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/clk/mediatek/clk-pllfh.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90422
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48693 · Revision 1
- Added to Heist Feed
- Publisher date