{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3"
            },
            {
              "fixed": "eeea8da43ab86ac0a6b9cec225eec91564346940"
            },
            {
              "fixed": "fa18639deab4a3662d543200c5bfc29bf4e23173"
            },
            {
              "fixed": "57e39fe8da573435fa35975f414f4dc17d9f8449"
            },
            {
              "fixed": "584279ad9ff1e8e7c5494b9fce286201f7d1f9e2"
            },
            {
              "fixed": "cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5"
            },
            {
              "fixed": "767d23ade706d5fa51c36168e92a9c5533c351a1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.31"
            },
            {
              "fixed": "6.1.167"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.130"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.77"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.17"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23336.json"
  },
  "details": "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 \u003cTASK\u003e\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 \u003c/TASK\u003e\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.",
  "id": "CVE-2026-23336",
  "modified": "2026-04-01T23:09:54.242667509Z",
  "published": "2026-03-25T10:27:26.061Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57e39fe8da573435fa35975f414f4dc17d9f8449"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/584279ad9ff1e8e7c5494b9fce286201f7d1f9e2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/767d23ade706d5fa51c36168e92a9c5533c351a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eeea8da43ab86ac0a6b9cec225eec91564346940"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa18639deab4a3662d543200c5bfc29bf4e23173"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23336.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23336"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()"
}