{
  "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-2022-49281",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49281",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-02-26T01:56:23.201Z",
    "updatedAt": "2026-05-11T18:56:39.572Z",
    "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": "cifs: fix handlecache and multiuser",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix handlecache and multiuser\n\nIn multiuser each individual user has their own tcon structure for the\nshare and thus their own handle for a cached directory.\nWhen we umount such a share we much make sure to release the pinned down dentry\nfor each such tcon and not just the master tcon.\n\nOtherwise we will get nasty warnings on umount that dentries are still in use:\n[ 3459.590047] BUG: Dentry 00000000115c6f41{i=12000000019d95,n=/}  still in use\\\n (2) [unmount of cifs cifs]\n...\n[ 3459.590492] Call Trace:\n[ 3459.590500]  d_walk+0x61/0x2a0\n[ 3459.590518]  ? shrink_lock_dentry.part.0+0xe0/0xe0\n[ 3459.590526]  shrink_dcache_for_umount+0x49/0x110\n[ 3459.590535]  generic_shutdown_super+0x1a/0x110\n[ 3459.590542]  kill_anon_super+0x14/0x30\n[ 3459.590549]  cifs_kill_sb+0xf5/0x104 [cifs]\n[ 3459.590773]  deactivate_locked_super+0x36/0xa0\n[ 3459.590782]  cleanup_mnt+0x131/0x190\n[ 3459.590789]  task_work_run+0x5c/0x90\n[ 3459.590798]  exit_to_user_mode_loop+0x151/0x160\n[ 3459.590809]  exit_to_user_mode_prepare+0x83/0xd0\n[ 3459.590818]  syscall_exit_to_user_mode+0x12/0x30\n[ 3459.590828]  do_syscall_64+0x48/0x90\n[ 3459.590833]  entry_SYSCALL_64_after_hwframe+0x44/0xae",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5e9c89d43fa6f5d458d4d0f9e22a67cc001c8da9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2fafbc198613823943c106d1ec9b516da692059f"
            },
            {
              "version": "5e9c89d43fa6f5d458d4d0f9e22a67cc001c8da9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ffa631c4bff59dde59b598011f570e27dfba3515"
            },
            {
              "version": "5e9c89d43fa6f5d458d4d0f9e22a67cc001c8da9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e71f6a3a1d5c826a30384fec587ca7503ef6bde5"
            },
            {
              "version": "5e9c89d43fa6f5d458d4d0f9e22a67cc001c8da9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "47178c7722ac528ea08aa82c3ef9ffa178962d7a"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.13",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.13"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}