thermal: core: Fix thermal zone governor cleanup issues
In the Linux kernel, the following vulnerability has been resolved: thermal: core: Fix thermal zone governor cleanup issues If thermal_zone_device_register_with_trips() fails after adding a thermal governor to the thermal zone being registered, the governor is not removed from it as appropriate which may lead to a memory leak. In turn, thermal_zone_device_unregister() calls thermal_set_governor() without acquiring the thermal zone lock beforehand which may race with a governor update via sysfs and may lead to a use-after-free in that case. Address these issues by adding two thermal_set_governor() calls, one to thermal_release() to remove the governor from the given thermal zone, and one to the thermal zone registration error path to cover failures preceding the thermal zone device registration.
CVE-2026-46021
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-2026-46021
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": "e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8",
"lessThan": "a172fa18bc370b776ac1510abb0dcb50a7a35fac",
"versionType": "git"
},
{
"status": "affected",
"version": "e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8",
"lessThan": "8e563d8db50f303171aceb79eec0807e7ba06951",
"versionType": "git"
},
{
"status": "affected",
"version": "e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8",
"lessThan": "d4eb861adde5ce22e459fbd29366f47bb2167977",
"versionType": "git"
},
{
"status": "affected",
"version": "e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8",
"lessThan": "37a430a2d4e66ec8238da6c7f7e48809bf265e13",
"versionType": "git"
},
{
"status": "affected",
"version": "e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8",
"lessThan": "f412e541d25a3dfaf3d53e012ade6ff03cae8a45",
"versionType": "git"
},
{
"status": "affected",
"version": "e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8",
"lessThan": "75f8f3c3e09122270986de9d7aa347d701676761",
"versionType": "git"
},
{
"status": "affected",
"version": "e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8",
"lessThan": "64d4ebf91d082034bbc5ae3ba2d7fd800bc02d06",
"versionType": "git"
},
{
"status": "affected",
"version": "e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8",
"lessThan": "41ff66baf81c6541f4f985dd7eac4494d03d9440",
"versionType": "git"
}
],
"programFiles": [
"drivers/thermal/thermal_core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.259",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.86",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.27",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.4",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/thermal/thermal_core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-46021
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #28372 · Revision 1
- Added to Heist Feed
- Publisher date