{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49613",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T02:21:30.418Z",
        "datePublished": "2025-02-26T02:23:34.739Z",
        "dateUpdated": "2026-05-11T19:03:20.267Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:03:20.267Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250: Fix PM usage_count for console handover\n\nWhen console is enabled, univ8250_console_setup() calls\nserial8250_console_setup() before .dev is set to uart_port. Therefore,\nit will not call pm_runtime_get_sync(). Later, when the actual driver\nis going to take over univ8250_console_exit() is called. As .dev is\nalready set, serial8250_console_exit() makes pm_runtime_put_sync() call\nwith usage count being zero triggering PM usage count warning\n(extra debug for univ8250_console_setup(), univ8250_console_exit(), and\nserial8250_register_ports()):\n\n[    0.068987] univ8250_console_setup ttyS0 nodev\n[    0.499670] printk: console [ttyS0] enabled\n[    0.717955] printk: console [ttyS0] printing thread started\n[    1.960163] serial8250_register_ports assigned dev for ttyS0\n[    1.976830] printk: console [ttyS0] disabled\n[    1.976888] printk: console [ttyS0] printing thread stopped\n[    1.977073] univ8250_console_exit ttyS0 usage:0\n[    1.977075] serial8250 serial8250: Runtime PM usage count underflow!\n[    1.977429] dw-apb-uart.6: ttyS0 at MMIO 0x4010006000 (irq = 33, base_baud = 115200) is a 16550A\n[    1.977812] univ8250_console_setup ttyS0 usage:2\n[    1.978167] printk: console [ttyS0] printing thread started\n[    1.978203] printk: console [ttyS0] enabled\n\nTo fix the issue, call pm_runtime_get_sync() in\nserial8250_register_ports() as soon as .dev is set for an uart_port\nif it has console enabled.\n\nThis problem became apparent only recently because 82586a721595 (\"PM:\nruntime: Avoid device usage count underflows\") added the warning\nprintout. I confirmed this problem also occurs with v5.18 (w/o the\nwarning printout, obviously)."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tty/serial/8250/8250_core.c",
                        "drivers/tty/serial/serial_core.c",
                        "include/linux/serial_core.h"
                    ],
                    "versions": [
                        {
                            "version": "bedb404e91bb2908d9921fc736a518a9d89525fc",
                            "lessThan": "d9cb6fabc90102f9e61fe35bd0160db88f4f53b4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bedb404e91bb2908d9921fc736a518a9d89525fc",
                            "lessThan": "190ce5cdc55d1b66ea582ac2be6fd5a72e3cc486",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bedb404e91bb2908d9921fc736a518a9d89525fc",
                            "lessThan": "5df66302f03f87ae8953785a882d78e911f00c55",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bedb404e91bb2908d9921fc736a518a9d89525fc",
                            "lessThan": "f9b11229b79c0fb2100b5bb4628a101b1d37fbf6",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tty/serial/8250/8250_core.c",
                        "drivers/tty/serial/serial_core.c",
                        "include/linux/serial_core.h"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.132",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.56",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18.13",
                            "lessThanOrEqual": "5.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "5.10.132"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "5.15.56"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "5.18.13"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "5.19"
                                }
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d9cb6fabc90102f9e61fe35bd0160db88f4f53b4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/190ce5cdc55d1b66ea582ac2be6fd5a72e3cc486"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5df66302f03f87ae8953785a882d78e911f00c55"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f9b11229b79c0fb2100b5bb4628a101b1d37fbf6"
                }
            ],
            "title": "serial: 8250: Fix PM usage_count for console handover",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
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}