wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()_CVE-2026-23336

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: cancel rfkill_block work in wiphy_unregister()\n\nThere is a use-after-free error in cfg80211_shutdown_all_interfaces found\nby syzkaller:\n\nBUG: KASAN: use-after-free in cfg80211_shutdown_all_interfaces+0x213/0x220\nRead of size 8 at addr ffff888112a78d98 by task kworker/0:5/5326\nCPU: 0 UID: 0 PID: 5326 Comm: kworker/0:5 Not tainted 6.19.0-rc2 #2 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nWorkqueue: events cfg80211_rfkill_block_work\nCall Trace:\n <TASK>\n dump_stack_lvl+0x116/0x1f0\n print_report+0xcd/0x630\n kasan_report+0xe0/0x110\n cfg80211_shutdown_all_interfaces+0x213/0x220\n cfg80211_rfkill_block_work+0x1e/0x30\n process_one_work+0x9cf/0x1b70\n worker_thread+0x6c8/0xf10\n kthread+0x3c5/0x780\n ret_from_fork+0x56d/0x700\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nThe problem arises due to the rfkill_block work is not cancelled when wiphy\nis being unregistered. In order to fix the issue cancel the corresponding\nwork in wiphy_unregister().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.",
    "published": "2026-03-25T10:27:26.061Z",
    "modified": "2026-04-02T14:44:17.632Z",
    "type": "cve",
    "title": "wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/eeea8da43ab86ac0a6b9cec225eec91564346940\nhttps://git.kernel.org/stable/c/fa18639deab4a3662d543200c5bfc29bf4e23173\nhttps://git.kernel.org/stable/c/57e39fe8da573435fa35975f414f4dc17d9f8449\nhttps://git.kernel.org/stable/c/584279ad9ff1e8e7c5494b9fce286201f7d1f9e2\nhttps://git.kernel.org/stable/c/cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5\nhttps://git.kernel.org/stable/c/767d23ade706d5fa51c36168e92a9c5533c351a1",
    "id": "CVE-2026-23336",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\nLinux Linux 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\nLinux Linux 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\nLinux Linux 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\nLinux Linux 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\nLinux Linux 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\nLinux Linux 2.6.31",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
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    "ai_score": 0
}