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CVE-2026-43332: thermal: core: Fix thermal zone device registration error path

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-08 · updated 2026-10-19
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: thermal: core: Fix thermal zone device registration error path If thermal_zone_device_register_with_trips() fails after registering a thermal zone device, it needs to wait for the tz->removal completion like thermal_zone_device_unregister(), in case user space has managed to take a reference to the thermal zone device's kobject, in which case thermal_release() may not be called by the error path itself and tz may be freed prematurely. Add the missing wait_for_completion() call to the thermal zone device registration error path.

Affected products

• Linux kernel: from 6.6.14 before 6.6.134; from 6.8 before 6.12.81; from 6.13 before 6.18.22; from 6.19 before 6.19.12; 6.7.2, 7.0-rc1, 7.0-rc2, 7.0-rc3, 7.0-rc4, 7.0-rc5 (+1) — fixed in 6.12.81, 6.18.22, 6.19.12, 6.6.134

How to fix

Upgrade to a fixed version: Linux kernel 6.12.81, 6.18.22, 6.19.12, 6.6.134. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/4d390f0e507dfb16d58f83a58d78d1150dc8b9d7
• https://git.kernel.org/stable/c/604da9c04c218362e1c1457304ebeb9c199d537c
• https://git.kernel.org/stable/c/9e07e3b81807edd356e1f794cffa00a428eff443
• https://git.kernel.org/stable/c/9e796001af97a1f7368d5114b7a8533dd98d797a
• https://git.kernel.org/stable/c/c4c7219e93319bba9ba0765dee597784c78f63c5

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