{
    "id": "CVE-2025-38352",
    "published": "2025-07-22 08:15:23",
    "last_modified": "2026-09-08 18:17:32",
    "cvss_score": "7.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-367",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nposix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()\n\nIf an exiting non-autoreaping task has already passed exit_notify() and\ncalls handle_posix_cpu_timers() from IRQ, it can be reaped by its parent\nor debugger right after unlock_task_sighand().\n\nIf a concurrent posix_cpu_timer_del() runs at that moment, it won't be\nable to detect timer->it.cpu.firing != 0: cpu_timer_task_rcu() and/or\nlock_task_sighand() will fail.\n\nAdd the tsk->exit_state check into run_posix_cpu_timers() to fix this.\n\nThis fix is not needed if CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y, because\nexit_task_work() is called before exit_notify(). But the check still\nmakes sense, task_work_add(&tsk->posix_cputimers_work.work) will fail\nanyway in this case.",
    "epss_score": "0.01289",
    "epss_percentile": "0.69045",
    "kev": 1,
    "kev_due": "2025-09-25",
    "has_exploit": 0,
    "updated_at": "2026-09-27 18:17:50",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2025-09-25."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "linux",
            "product": "linux_kernel"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2025-38352",
        "date_added": "2025-09-04",
        "due_date": "2025-09-25",
        "vendor": "Linux",
        "product": "Kernel",
        "name": "Linux Kernel Time-of-Check Time-of-Use (TOCTOU) Race Condition Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://git.kernel.org/stable/c/2c72fe18cc5f9f1750f5bc148cf1c94c29e106ff",
        "https://git.kernel.org/stable/c/2f3daa04a9328220de46f0d5c919a6c0073a9f0b",
        "https://git.kernel.org/stable/c/460188bc042a3f40f72d34b9f7fc6ee66b0b757b",
        "https://git.kernel.org/stable/c/764a7a5dfda23f69919441f2eac2a83e7db6e5bb",
        "https://git.kernel.org/stable/c/78a4b8e3795b31dae58762bc091bb0f4f74a2200",
        "https://git.kernel.org/stable/c/c076635b3a42771ace7d276de8dc3bc76ee2ba1b",
        "https://git.kernel.org/stable/c/c29d5318708e67ac13c1b6fc1007d179fb65b4d7",
        "https://git.kernel.org/stable/c/f90fff1e152dedf52b932240ebbd670d83330eca",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/farazsth98/chronomaly",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-38352"
    ]
}