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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-93145

clk: qcom: gdsc: tear down per-domain genpds in gdsc_unregister()

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 to < 418d2f0a32b2a9ceb656a88aa9139408a9b7b517affected
  • 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 to < 6333cbf7e86df9797b342ce64ae7d32ba46d8d10affected
  • 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 to < cfe16d993c578f6b17e0171a8dfd68f6fdfcfb24affected
  • 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 to < 0f4733f5fc6b6b62750619f30c18730922a1dbdbaffected
  • 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 to < 6b9228a43963bcd4db92deb467375345132c29b3affected
  • 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 to < f60f495858379dc70e87c6898d761a9db98739ffaffected
  • 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 to < 40bd77fa2857ccfa77b885b77d44cea406f24a4caffected
  • 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 to < 86b23609d5e17a770d03037e53c6a443e742a6e6affected

Linux Linux

Default version status: affected

  • 4.4affected
  • 0 to < 4.4unaffected
  • 5.10.270 to ≤ 5.10.*unaffected
  • 5.15.221 to ≤ 5.15.*unaffected
  • 6.1.188 to ≤ 6.1.*unaffected
  • 6.6.157 to ≤ 6.6.*unaffected
  • 6.12.110 to ≤ 6.12.*unaffected
  • 6.18.52 to ≤ 6.18.*unaffected
  • 7.2.6 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References