btrfs: fix double free in create_space_info_sub_group() error path_CVE-2026-46164

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix double free in create_space_info_sub_group() error path\n\nWhen kobject_init_and_add() fails, the call chain is:\n\ncreate_space_info_sub_group()\n-> btrfs_sysfs_add_space_info_type()\n-> kobject_init_and_add()\n-> failure\n-> kobject_put(&sub_group->kobj)\n-> space_info_release()\n-> kfree(sub_group)\n\nThen control returns to create_space_info_sub_group(), where:\n\nbtrfs_sysfs_add_space_info_type() returns error\n-> kfree(sub_group)\n\nThus, sub_group is freed twice.\n\nKeep parent->sub_group[index] = NULL for the failure path, but after\nbtrfs_sysfs_add_space_info_type() has called kobject_put(), let the\nkobject release callback handle the cleanup.",
    "published": "2026-05-28T09:36:19.810Z",
    "modified": "2026-05-30T10:48:32.353Z",
    "type": "cve",
    "title": "btrfs: fix double free in create_space_info_sub_group() error path",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/d2a675f2e238ec96c8e91e2718c1f910c9c8fb21\nhttps://git.kernel.org/stable/c/14b22be1dd844383eb03af9b1ee3b6b25d32aeaf\nhttps://git.kernel.org/stable/c/dfd05a16b5c9d1d98b47905f37f2fccda52173d1\nhttps://git.kernel.org/stable/c/259af6857a1b4f1e9ef8b780353f9d11c26a22bd\nhttps://git.kernel.org/stable/c/a7449edf96143f192606ec8647e3167e1ecbd728",
    "id": "CVE-2026-46164",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 0bd151ce4200ca847990e05cca29a76456982ca5\nLinux Linux 190d5a7c4fe42b8c9aa46e3336389e7cb10395bb\nLinux Linux f92ee31e031c7819126d2febdda0c3e91f5d2eb9\nLinux Linux f92ee31e031c7819126d2febdda0c3e91f5d2eb9\nLinux Linux f92ee31e031c7819126d2febdda0c3e91f5d2eb9\nLinux Linux 64c7ddda83acfbaa0efb381a1928ce908c584607\nLinux Linux 6.6.122\nLinux Linux 6.12.67\nLinux Linux 6.1.162\nLinux Linux 6.16",
    "sourceHref": "",
    "cvss": {
        "score": 7,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "0bd151ce4200ca847990e05cca29a76456982ca5",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}