CVE-2022-49543

/// Technical description

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

ath11k: fix the warning of dev_wake in mhi_pm_disable_transition()

When test device recovery with below command, it has warning in message

as below.

echo assert > /sys/kernel/debug/ath11k/wcn6855\ hw2.0/simulate_fw_crash

echo assert > /sys/kernel/debug/ath11k/qca6390\ hw2.0/simulate_fw_crash

warning message:

[ 1965.642121] ath11k_pci 0000:06:00.0: simulating firmware assert crash

[ 1968.471364] ieee80211 phy0: Hardware restart was requested

[ 1968.511305] ------------[ cut here ]------------

[ 1968.511368] WARNING: CPU: 3 PID: 1546 at drivers/bus/mhi/core/pm.c:505 mhi_pm_disable_transition+0xb37/0xda0 [mhi]

[ 1968.511443] Modules linked in: ath11k_pci ath11k mac80211 libarc4 cfg80211 qmi_helpers qrtr_mhi mhi qrtr nvme nvme_core

[ 1968.511563] CPU: 3 PID: 1546 Comm: kworker/u17:0 Kdump: loaded Tainted: G W 5.17.0-rc3-wt-ath+ #579

[ 1968.511629] Hardware name: Intel(R) Client Systems NUC8i7HVK/NUC8i7HVB

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References