{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2022-49270",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49270",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-02-26T01:56:17.683Z",
    "updatedAt": "2026-05-11T18:56:26.788Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "dm: fix use-after-free in dm_cleanup_zoned_dev()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm: fix use-after-free in dm_cleanup_zoned_dev()\n\ndm_cleanup_zoned_dev() uses queue, so it must be called\nbefore blk_cleanup_disk() starts its killing:\n\nblk_cleanup_disk->blk_cleanup_queue()->kobject_put()->blk_release_queue()->\n->...RCU...->blk_free_queue_rcu()->kmem_cache_free()\n\nOtherwise, RCU callback may be executed first and\ndm_cleanup_zoned_dev() will touch free'd memory:\n\n BUG: KASAN: use-after-free in dm_cleanup_zoned_dev+0x33/0xd0\n Read of size 8 at addr ffff88805ac6e430 by task dmsetup/681\n\n CPU: 4 PID: 681 Comm: dmsetup Not tainted 5.17.0-rc2+ #6\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014\n Call Trace:\n  <TASK>\n  dump_stack_lvl+0x57/0x7d\n  print_address_description.constprop.0+0x1f/0x150\n  ? dm_cleanup_zoned_dev+0x33/0xd0\n  kasan_report.cold+0x7f/0x11b\n  ? dm_cleanup_zoned_dev+0x33/0xd0\n  dm_cleanup_zoned_dev+0x33/0xd0\n  __dm_destroy+0x26a/0x400\n  ? dm_blk_ioctl+0x230/0x230\n  ? up_write+0xd8/0x270\n  dev_remove+0x156/0x1d0\n  ctl_ioctl+0x269/0x530\n  ? table_clear+0x140/0x140\n  ? lock_release+0xb2/0x750\n  ? remove_all+0x40/0x40\n  ? rcu_read_lock_sched_held+0x12/0x70\n  ? lock_downgrade+0x3c0/0x3c0\n  ? rcu_read_lock_sched_held+0x12/0x70\n  dm_ctl_ioctl+0xa/0x10\n  __x64_sys_ioctl+0xb9/0xf0\n  do_syscall_64+0x3b/0x90\n  entry_SYSCALL_64_after_hwframe+0x44/0xae\n RIP: 0033:0x7fb6dfa95c27",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "bb37d77239af25cde59693dbe3fac04dd17d7b29",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0987f00a76a17aa7213da492c00ed9e5a6210c73"
            },
            {
              "version": "bb37d77239af25cde59693dbe3fac04dd17d7b29",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fdfe414ca28ddfd562c233fb27385cf820de03e8"
            },
            {
              "version": "bb37d77239af25cde59693dbe3fac04dd17d7b29",
              "status": "affected",
              "versionType": "git",
              "lessThan": "43a043aed964659bc69ef81f266912b73c80d837"
            },
            {
              "version": "bb37d77239af25cde59693dbe3fac04dd17d7b29",
              "status": "affected",
              "versionType": "git",
              "lessThan": "588b7f5df0cb64f281290c7672470c006abe7160"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.14"
            },
            {
              "version": "5.15.33",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.16.19",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.16.*"
            },
            {
              "version": "5.17.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.17.*"
            },
            {
              "version": "5.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}