CVE-2024-27002

Summary

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

clk: mediatek: Do a runtime PM get on controllers during probe

mt8183-mfgcfg has a mutual dependency with genpd during the probing stage, which leads to a deadlock in the following call stack:

CPU0: genpd_lock –> clk_prepare_lock genpd_power_off_work_fn() genpd_lock() generic_pm_domain::power_off() clk_unprepare() clk_prepare_lock()

CPU1: clk_prepare_lock –> genpd_lock clk_register() __clk_core_init() clk_prepare_lock() clk_pm_runtime_get() genpd_lock()

Do a runtime PM get at the probe function to make sure clk_register() won't acquire the genpd lock. Instead of only modifying mt8183-mfgcfg, do this on all mediatek clock controller probings because we don't believe this would cause any regression.

Verified on MT8183 and MT8192 Chromebooks.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxacddfc2c261b3653ab1c1b567a427299bac20d31 < 165d226472575b213dd90dfda19d1605dd7c19a8affected
LinuxLinuxacddfc2c261b3653ab1c1b567a427299bac20d31 < c0dcd5c072e2a3fff886f673e6a5d9bf8090c4ccaffected
LinuxLinuxacddfc2c261b3653ab1c1b567a427299bac20d31 < b62ed25feb342eab052822eff0c554873799a4f5affected
LinuxLinuxacddfc2c261b3653ab1c1b567a427299bac20d31 < 2f7b1d8b5505efb0057cd1ab85fca206063ea4c3affected
LinuxLinux5.2affected
LinuxLinux0 < 5.2unaffected
LinuxLinux6.1.88 <= 6.1.*unaffected
LinuxLinux6.6.29 <= 6.6.*unaffected
LinuxLinux6.8.8 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References