{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-50019",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-10-21T12:17:06.064Z",
        "datePublished": "2024-10-21T19:39:25.908Z",
        "dateUpdated": "2024-10-22T13:28:47.562Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-10-21T19:39:25.908Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkthread: unpark only parked kthread\n\nCalling into kthread unparking unconditionally is mostly harmless when\nthe kthread is already unparked. The wake up is then simply ignored\nbecause the target is not in TASK_PARKED state.\n\nHowever if the kthread is per CPU, the wake up is preceded by a call\nto kthread_bind() which expects the task to be inactive and in\nTASK_PARKED state, which obviously isn't the case if it is unparked.\n\nAs a result, calling kthread_stop() on an unparked per-cpu kthread\ntriggers such a warning:\n\n\tWARNING: CPU: 0 PID: 11 at kernel/kthread.c:525 __kthread_bind_mask kernel/kthread.c:525\n\t <TASK>\n\t kthread_stop+0x17a/0x630 kernel/kthread.c:707\n\t destroy_workqueue+0x136/0xc40 kernel/workqueue.c:5810\n\t wg_destruct+0x1e2/0x2e0 drivers/net/wireguard/device.c:257\n\t netdev_run_todo+0xe1a/0x1000 net/core/dev.c:10693\n\t default_device_exit_batch+0xa14/0xa90 net/core/dev.c:11769\n\t ops_exit_list net/core/net_namespace.c:178 [inline]\n\t cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640\n\t process_one_work kernel/workqueue.c:3231 [inline]\n\t process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312\n\t worker_thread+0x86d/0xd70 kernel/workqueue.c:3393\n\t kthread+0x2f0/0x390 kernel/kthread.c:389\n\t ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n\t ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n\t </TASK>\n\nFix this with skipping unecessary unparking while stopping a kthread."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/kthread.c"
                    ],
                    "versions": [
                        {
                            "version": "5c25b5ff89f0",
                            "lessThan": "40a6e660d2a3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5c25b5ff89f0",
                            "lessThan": "8608196a155c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5c25b5ff89f0",
                            "lessThan": "19a5029981c8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5c25b5ff89f0",
                            "lessThan": "cda5423c1a1c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5c25b5ff89f0",
                            "lessThan": "214e01ad4ed7",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/kthread.c"
                    ],
                    "versions": [
                        {
                            "version": "5.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.11",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.15.168",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.1.113",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.6.57",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.11.4",
                            "lessThanOrEqual": "6.11.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.12-rc3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/40a6e660d2a3a7a5cb99f0b8ff4fb41bad039f68"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8608196a155cb6cfae04d96b10a2652d0327e33f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/19a5029981c87c2ad0845e713837faa88f5d8e2b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cda5423c1a1c906062ef235c940f249b97d9d135"
                },
                {
                    "url": "https://git.kernel.org/stable/c/214e01ad4ed7158cab66498810094fac5d09b218"
                }
            ],
            "title": "kthread: unpark only parked kthread",
            "x_generator": {
                "engine": "bippy-c9c4e1df01b2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2024-50019",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-10-22T13:27:38.124925Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-10-22T13:28:47.562Z"
                }
            }
        ]
    }
}