CVE-2024-57809

What it actually does

The flaw breaks suspend/resume sequences on i.MX6QDL platforms with connected PCIe devices, causing kernel hangs, imprecise external aborts, and driver failures (such as ath10k or iwlwifi) when attempting to restore power state from D3hot to D0.

Why it matters to the business

Embedded and industrial systems using affected hardware lose reliable power management, leading to unexpected downtime, forced reboots, and potential data loss during sleep/wake cycles; low EPSS and absence from KEV indicate limited broad exploitation risk but high impact on specific device fleets.

How an attack unfolds

An attacker with the ability to trigger suspend/resume (via local access, power events, or malware) on i.MX6QDL hardware with PCIe peripherals forces the kernel into a faulty resume path that resets or inaccesses the device, crashing dependent drivers and hanging the system; listed threat actors appear mismatched to this platform-specific power-management issue.

How to fix it

Apply the upstream kernel patch that reuses common i.MX suspend/resume sequences while resetting the connected PCIe device; for listed chromium-browser packages on Ubuntu 14.04 LTS update to version 58.0.3029.81-0ubuntu0.14.04.1172 or later equivalent kernel fixes.

How to confirm the fix worked

Confirm kernel logs no longer show 'Unable to change power state from D3hot to D0' or 'imprecise external abort' on resume; verify PCIe devices reinitialize cleanly after suspend cycles on i.MX6QDL hardware.

Typical attack path

1. Gain local or physical access to trigger system suspend
2. Initiate or wait for resume cycle
3. Trigger PCIe device power-state transition failure
4. Cause kernel fault and driver crash leading to denial of service

How to detect it

Review kernel logs for ath10k_pci or iwlwifi power-state errors and imprecise external aborts during resume; correlate with i.MX6QDL platform identifiers and PCIe device resets.

What your security team should do

• Prioritize patching i.MX6QDL kernels in embedded deployments within 30 days
• Test suspend/resume thoroughly with PCIe wireless cards after update
• Monitor for any downstream dependents relying on this platform
• Disable suspend if immediate patching is not feasible