GHSA-VRW4-655G-RQ7M
Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-11-10 21:30In 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": [],
"aliases": [
"CVE-2022-49841"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-01T15:16:07Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: imx: Add missing .thaw_noirq hook\n\nThe following warning is seen with non-console UART instance when\nsystem hibernates.\n\n[ 37.371969] ------------[ cut here ]------------\n[ 37.376599] uart3_root_clk already disabled\n[ 37.380810] WARNING: CPU: 0 PID: 296 at drivers/clk/clk.c:952 clk_core_disable+0xa4/0xb0\n...\n[ 37.506986] Call trace:\n[ 37.509432] clk_core_disable+0xa4/0xb0\n[ 37.513270] clk_disable+0x34/0x50\n[ 37.516672] imx_uart_thaw+0x38/0x5c\n[ 37.520250] platform_pm_thaw+0x30/0x6c\n[ 37.524089] dpm_run_callback.constprop.0+0x3c/0xd4\n[ 37.528972] device_resume+0x7c/0x160\n[ 37.532633] dpm_resume+0xe8/0x230\n[ 37.536036] hibernation_snapshot+0x288/0x430\n[ 37.540397] hibernate+0x10c/0x2e0\n[ 37.543798] state_store+0xc4/0xd0\n[ 37.547203] kobj_attr_store+0x1c/0x30\n[ 37.550953] sysfs_kf_write+0x48/0x60\n[ 37.554619] kernfs_fop_write_iter+0x118/0x1ac\n[ 37.559063] new_sync_write+0xe8/0x184\n[ 37.562812] vfs_write+0x230/0x290\n[ 37.566214] ksys_write+0x68/0xf4\n[ 37.569529] __arm64_sys_write+0x20/0x2c\n[ 37.573452] invoke_syscall.constprop.0+0x50/0xf0\n[ 37.578156] do_el0_svc+0x11c/0x150\n[ 37.581648] el0_svc+0x30/0x140\n[ 37.584792] el0t_64_sync_handler+0xe8/0xf0\n[ 37.588976] el0t_64_sync+0x1a0/0x1a4\n[ 37.592639] ---[ end trace 56e22eec54676d75 ]---\n\nOn hibernating, pm core calls into related hooks in sequence like:\n\n .freeze\n .freeze_noirq\n .thaw_noirq\n .thaw\n\nWith .thaw_noirq hook being absent, the clock will be disabled in a\nunbalanced call which results the warning above.\n\n imx_uart_freeze()\n clk_prepare_enable()\n imx_uart_suspend_noirq()\n clk_disable()\n imx_uart_thaw\n clk_disable_unprepare()\n\nAdding the missing .thaw_noirq hook as imx_uart_resume_noirq() will have\nthe call sequence corrected as below and thus fix the warning.\n\n imx_uart_freeze()\n clk_prepare_enable()\n imx_uart_suspend_noirq()\n clk_disable()\n imx_uart_resume_noirq()\n clk_enable()\n imx_uart_thaw\n clk_disable_unprepare()",
"id": "GHSA-vrw4-655g-rq7m",
"modified": "2025-11-10T21:30:28Z",
"published": "2025-05-01T15:31:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49841"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0a3160f4ffc70ee4bfa1521f698dace06e6091fd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4561d8008a467cb05ac632a215391d6b787f40aa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/476b09e07bd519ec7ba5941a6a6f9a02256dbb21"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ae22294e213a402a70fa1731538367d1b758ffe7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e3f9d87d6f0732827c443bd1474df21c2fad704b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e401312ca6e180ee1bd65f6a766e99dd40aa95e7"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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