CVE-2022-49841

/// Technical description

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

serial: imx: Add missing .thaw_noirq hook

The following warning is seen with non-console UART instance when

system hibernates.

[ 37.371969] ------------[ cut here ]------------

[ 37.376599] uart3_root_clk already disabled

[ 37.380810] WARNING: CPU: 0 PID: 296 at drivers/clk/clk.c:952 clk_core_disable+0xa4/0xb0

...

[ 37.506986] Call trace:

[ 37.509432] clk_core_disable+0xa4/0xb0

[ 37.513270] clk_disable+0x34/0x50

[ 37.516672] imx_uart_thaw+0x38/0x5c

[ 37.520250] platform_pm_thaw+0x30/0x6c

[ 37.524089] dpm_run_callback.constprop.0+0x3c/0xd4

[ 37.528972] device_resume+0x7c/0x160

[ 37.532633] dpm_resume+0xe8/0x230

[ 37.536036] hibernation_snapshot+0x288/0x430

[ 37.540397] hibernate+0x10c/0x2e0

[ 37.543798] state_store+0xc4/0xd0

[ 37.547203] kobj_attr_store+0x1c/0x30

[ 37.550953] sysfs_kf_write+0x48/0x60

[ 37.554619] kernfs_fop_write_iter+0x118/0x1ac

[ 37.559063] new_sync

/// 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