CVE-2022-49841: 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…

PriorityP419medium5.5CVSS 3.1

AVLACLPRLUINSUCNINAH

EPSS

0.19%

8.8th percentile

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_write+0xe8/0x184 [ 37.562812] vfs_write+0x230/0x290 [ 37.566214] ksys_write+0x68/0xf4 [ 37.569529] __arm64_sys_write+0x20/0x2c [ 37.573452] invoke_syscall.constprop.0+0x50/0xf0 [ 37.578156] do_el0_svc+0x11c/0x150 [ 37.581648] el0_svc+0x30/0x140 [ 37.584792] el0t_64_sync_handler+0xe8/0xf0 [ 37.588976] el0t_64_sync+0x1a0/0x1a4 [ 37.592639] ---[ end trace 56e22eec54676d75 ]--- On hibernating, pm core calls into related hooks in sequence like: .freeze .freeze_noirq .thaw_noirq .thaw With .thaw_noirq hook being absent, the clock will be disabled in a unbalanced call which results the warning above. imx_uart_freeze() clk_prepare_enable() imx_uart_suspend_noirq() clk_disable() imx_uart_thaw clk_disable_unprepare() Adding the missing .thaw_noirq hook as imx_uart_resume_noirq() will have the call sequence corrected as below and thus fix the warning. imx_uart_freeze() clk_prepare_enable() imx_uart_suspend_noirq() clk_disable() imx_uart_resume_noirq() clk_enable() imx_uart_thaw clk_disable_unprepare()

Affected

18 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.0.10-1 (bookworm)	linux 6.0.10-1 (bookworm)
linux	linux	—	—
linux	linux	>= 09df0b3464e528c6a4ca2c48d9ff6d2fd7cbd775 < e401312ca6e180ee1bd65f6a766e99dd40aa95e7	e401312ca6e180ee1bd65f6a766e99dd40aa95e7
linux	linux	>= 09df0b3464e528c6a4ca2c48d9ff6d2fd7cbd775 < 476b09e07bd519ec7ba5941a6a6f9a02256dbb21	476b09e07bd519ec7ba5941a6a6f9a02256dbb21
linux	linux	>= 09df0b3464e528c6a4ca2c48d9ff6d2fd7cbd775 < 0a3160f4ffc70ee4bfa1521f698dace06e6091fd	0a3160f4ffc70ee4bfa1521f698dace06e6091fd
linux	linux	>= 09df0b3464e528c6a4ca2c48d9ff6d2fd7cbd775 < ae22294e213a402a70fa1731538367d1b758ffe7	ae22294e213a402a70fa1731538367d1b758ffe7
linux	linux	>= 09df0b3464e528c6a4ca2c48d9ff6d2fd7cbd775 < e3f9d87d6f0732827c443bd1474df21c2fad704b	e3f9d87d6f0732827c443bd1474df21c2fad704b
linux	linux	>= 09df0b3464e528c6a4ca2c48d9ff6d2fd7cbd775 < 4561d8008a467cb05ac632a215391d6b787f40aa	4561d8008a467cb05ac632a215391d6b787f40aa
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 5.10.158-1	5.10.158-1
linux	linux_kernel	>= 0 < 6.0.10-1	6.0.10-1
linux	linux_kernel	>= 0 < 6.0.10-1	6.0.10-1
linux	linux_kernel	>= 0 < 6.0.10-1	6.0.10-1
linux	linux_kernel	>= 4.16 < 4.19.267	4.19.267
linux	linux_kernel	>= 4.20 < 5.4.225	5.4.225
linux	linux_kernel	>= 5.11 < 5.15.80	5.15.80
linux	linux_kernel	>= 5.16 < 6.0.10	6.0.10
linux	linux_kernel	>= 5.5 < 5.10.156	5.10.156

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv5.5MEDIUM

vendor_debian5.5MEDIUM

vendor_redhat5.5MEDIUM

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.