CVE-2026-46021
5.5 MEDIUMIn the Linux kernel, the following vulnerability has been resolved: thermal: core: Fix thermal zone governor cleanup issues If thermal_...
Published: 2026-05-27 · Last updated: 2026-06-16
Severity and scoring
- CVSS
- 5.5 MEDIUM
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-401
Affected products
| Vendor | Product |
|---|---|
| linux | linux_kernel |
Description
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-46021
- [Patch]https://git.kernel.org/stable/c/37a430a2d4e66ec8238da6c7f7e48809bf265e13
- [Patch]https://git.kernel.org/stable/c/41ff66baf81c6541f4f985dd7eac4494d03d9440
- [Patch]https://git.kernel.org/stable/c/64d4ebf91d082034bbc5ae3ba2d7fd800bc02d06
- [Patch]https://git.kernel.org/stable/c/75f8f3c3e09122270986de9d7aa347d701676761
- [Patch]https://git.kernel.org/stable/c/f412e541d25a3dfaf3d53e012ade6ff03cae8a45
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