CVE-2025-38631

Summary

In the Linux kernel, the following vulnerability has been resolved:

clk: imx95-blk-ctl: Fix synchronous abort

When enabling runtime PM for clock suppliers that also belong to a power domain, the following crash is thrown: error: synchronous external abort: 0000000096000010 [#1] PREEMPT SMP Workqueue: events_unbound deferred_probe_work_func pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=–) pc : clk_mux_get_parent+0x60/0x90 lr : clk_core_reparent_orphans_nolock+0x58/0xd8 Call trace: clk_mux_get_parent+0x60/0x90 clk_core_reparent_orphans_nolock+0x58/0xd8 of_clk_add_hw_provider.part.0+0x90/0x100 of_clk_add_hw_provider+0x1c/0x38 imx95_bc_probe+0x2e0/0x3f0 platform_probe+0x70/0xd8

Enabling runtime PM without explicitly resuming the device caused the power domain cut off after clk_register() is called. As a result, a crash happens when the clock hardware provider is added and attempts to access the BLK_CTL register.

Fix this by using devm_pm_runtime_enable() instead of pm_runtime_enable() and getting rid of the pm_runtime_disable() in the cleanup path.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/c1dead8bb303f86905ea6a09e5acda931165453b
• https://git.kernel.org/stable/c/9f0ee0baf25b46bb82655c687718ebb0ae1def7b
• https://git.kernel.org/stable/c/533dc3cb375cabd8a2beba293d63ef2acd3d0005
• https://git.kernel.org/stable/c/b08217a257215ed9130fce93d35feba66b49bf0a

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