{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-99249",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.403Z",
        "datePublished": "2026-11-03T11:18:26.800Z",
        "dateUpdated": "2026-11-03T11:18:26.800Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-11-03T11:18:26.800Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npid_namespace: make zap_pid_ns_processes() freezable\n\nWhen the init of a pid namespace exits, zap_pid_ns_processes() waits\nuntil all other pids in the namespace are freed. A tracer outside the\nnamespace that does not reap its traced zombies keeps those pids\nallocated, so this wait has no upper bound, and while it lasts every\nsuspend attempt fails:\n\n  Freezing user space processes failed after 20.006 seconds (2 tasks refusing to freeze, wq_busy=0):\n\nNeither wait is freezable. The first loop sleeps in do_wait(), which\nreturns -ERESTARTSYS on the freezer's fake signal; the loop then clears\nTIF_SIGPENDING and waits again without ever freezing. The final loop\nsleeps in TASK_INTERRUPTIBLE, and since nothing clears TIF_SIGPENDING\nthere, schedule() returns immediately after the first freeze attempt\nand the task spins until the wait ends.\n\nSleep in TASK_INTERRUPTIBLE | TASK_FREEZABLE in do_wait(), so that the\nfreezer can freeze tasks waiting there directly, and in TASK_IDLE |\nTASK_FREEZABLE in the final loop, like coredump_task_exit() does.\n\nThis was hit with Chromium-based browsers: crashpad ptrace-attaches the\nthreads of a crashed renderer, which is a pid namespace init, and does\nnot reap those killed during the dump."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/exit.c",
                        "kernel/pid_namespace.c"
                    ],
                    "versions": [
                        {
                            "version": "3eb07c8c8adb6f0572baba844ba2d9e501654316",
                            "lessThan": "064a6761d6f6ac55d090d3eaca649577ee736713",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3eb07c8c8adb6f0572baba844ba2d9e501654316",
                            "lessThan": "e8dafad7de9ede813af2d48cc04b7c88fef16682",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3eb07c8c8adb6f0572baba844ba2d9e501654316",
                            "lessThan": "4b47107f1a80c809c80093e872bcaccdbae13db4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3eb07c8c8adb6f0572baba844ba2d9e501654316",
                            "lessThan": "2e10b8a74f55b5aae33db105d3e2d3ae759c865a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3eb07c8c8adb6f0572baba844ba2d9e501654316",
                            "lessThan": "7deb5770840339fe88755bf27b92f74edc26ee87",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3eb07c8c8adb6f0572baba844ba2d9e501654316",
                            "lessThan": "81933038f5e273d17ed22792f906889393b204c5",
                            "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/exit.c",
                        "kernel/pid_namespace.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.24",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.24",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.191",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.161",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.115",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.59",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.13",
                            "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": "2.6.24",
                                    "versionEndExcluding": "6.1.191"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.24",
                                    "versionEndExcluding": "6.6.161"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.24",
                                    "versionEndExcluding": "6.12.115"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.24",
                                    "versionEndExcluding": "6.18.59"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.24",
                                    "versionEndExcluding": "7.2.13"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.24",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/064a6761d6f6ac55d090d3eaca649577ee736713"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e8dafad7de9ede813af2d48cc04b7c88fef16682"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4b47107f1a80c809c80093e872bcaccdbae13db4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2e10b8a74f55b5aae33db105d3e2d3ae759c865a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7deb5770840339fe88755bf27b92f74edc26ee87"
                },
                {
                    "url": "https://git.kernel.org/stable/c/81933038f5e273d17ed22792f906889393b204c5"
                }
            ],
            "title": "pid_namespace: make zap_pid_ns_processes() freezable",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}