CVE-2026-90360 regulator: core: use system_freezable_wq for init complete work
A race condition in the Linux kernel regulator core allows work to run during suspend, causing I2C errors and potential system instability or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-90360?
CVE-2026-90360 is a vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
regulator: core: use system_freezable_wq for init complete work
schedule_delayed_work() uses system_wq, which is non-freezable, allowing regulator_init_complete_work to run concurrently with system suspend. This work fires ~30s after boot to disable unused regulators via I2C. When it races with PM suspend, the I2C adapter may already be suspended, triggering a -ESHUTDOWN warning in __i2c_transfer():
WARNING: ... at __i2c_transfer+0x36c/0x3c8 Call trace: __i2c_transfer i2c_transfer regmap_i2c_write _regmap_update_bits regulator_disable_regmap _regulator_do_disable regulator_late_cleanup regulator_init_complete_work_function process_one_work
Switch to system_freezable_wq so the work is frozen before any device is suspended, eliminating the race.
Which versions are affected by CVE-2026-90360?
How do I fix CVE-2026-90360?
Apply the vendor's patch.
Is CVE-2026-90360 being exploited?
There is no known exploitation of CVE-2026-90360 in the wild and no public exploit code.
Sources
Also known as AZL-102236, BELL-CVE-2026-90360, DEBIAN-CVE-2026-90360, GHSA-8q97-2m9m-f966, UBUNTU-CVE-2026-90360.