{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98752",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.368Z",
        "datePublished": "2026-10-18T15:47:36.877Z",
        "dateUpdated": "2026-10-21T12:56:27.804Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:56:27.804Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: port: fix tty_port_tty_vhangup() race\n\nDrivers rely on tty_port_tty_vhangup() to synchronously hang up their\nports before tearing down resources as part of deregistration (e.g. on\nphysical disconnect).\n\nIf tty_port_tty_vhangup() races with another hangup it may however\nreturn before the port has been shut down. This is in turn can lead to\nuse-after-free and NULL-pointer dereferences in racing ioctls (including\na synchronous hangup) and in processing of racing asynchronous hangups\n(carrier loss).\n\nAdd the missing serialisation to tty_port_tty_vhangup() and\ntty_port_hangup() so that the former does not return until the port has\nbeen shut down also when there is a racing hangup.\n\nNote that serial core does not use tty_port_hangup(), but it already\nholds the port mutex when clearing port->tty and shutting down the port\nin uart_hangup()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tty/tty_port.c",
                        "include/linux/tty_port.h"
                    ],
                    "versions": [
                        {
                            "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e",
                            "lessThan": "ce220b4cdf62f73db0c1940f968eb33b9899fdd0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e",
                            "lessThan": "6d1a984afc3ca477dab3e51ec806671d443ad524",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e",
                            "lessThan": "6b7be3b9b857947e9c1338d4919d4ebd3b75e907",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e",
                            "lessThan": "017b18addbe8dcace1a569a00d40ed1ba1e03f4c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e",
                            "lessThan": "b48820de8c1a596c5b99775524dfce73c6576c5d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4260dc792fabfd20c8644fa9414b2ae48372365f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2.6.31.2",
                            "lessThan": "2.6.32",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tty/tty_port.c",
                        "include/linux/tty_port.h"
                    ],
                    "versions": [
                        {
                            "version": "2.6.32",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.32",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.113",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.56",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.10",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "2.6.32",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.12.113"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.18.56"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "7.2.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "7.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ce220b4cdf62f73db0c1940f968eb33b9899fdd0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6d1a984afc3ca477dab3e51ec806671d443ad524"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6b7be3b9b857947e9c1338d4919d4ebd3b75e907"
                },
                {
                    "url": "https://git.kernel.org/stable/c/017b18addbe8dcace1a569a00d40ed1ba1e03f4c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b48820de8c1a596c5b99775524dfce73c6576c5d"
                }
            ],
            "title": "tty: port: fix tty_port_tty_vhangup() race",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}