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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93145
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:18:09 UTC
Updated2026-09-17 17:18:09 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.002100000 probability, percentile 0.115950000 (date 2026-09-18)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 418d2f0a32b2a9ceb656a88aa9139408a9b7b517 git Not specified
CNA Linux Linux affected 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 6333cbf7e86df9797b342ce64ae7d32ba46d8d10 git Not specified
CNA Linux Linux affected 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 cfe16d993c578f6b17e0171a8dfd68f6fdfcfb24 git Not specified
CNA Linux Linux affected 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 0f4733f5fc6b6b62750619f30c18730922a1dbdb git Not specified
CNA Linux Linux affected 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 6b9228a43963bcd4db92deb467375345132c29b3 git Not specified
CNA Linux Linux affected 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 f60f495858379dc70e87c6898d761a9db98739ff git Not specified
CNA Linux Linux affected 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 40bd77fa2857ccfa77b885b77d44cea406f24a4c git Not specified
CNA Linux Linux affected 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 86b23609d5e17a770d03037e53c6a443e742a6e6 git Not specified
CNA Linux Linux affected 4.4 Not specified
CNA Linux Linux unaffected 4.4 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/40bd77fa2857ccfa77b885b77d44cea406f24a4c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6333cbf7e86df9797b342ce64ae7d32ba46d8d10 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cfe16d993c578f6b17e0171a8dfd68f6fdfcfb24 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6b9228a43963bcd4db92deb467375345132c29b3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/86b23609d5e17a770d03037e53c6a443e742a6e6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/418d2f0a32b2a9ceb656a88aa9139408a9b7b517 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0f4733f5fc6b6b62750619f30c18730922a1dbdb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f60f495858379dc70e87c6898d761a9db98739ff 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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