{
  "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-2025-22070",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-22070",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-04-16T14:12:23.295Z",
    "updatedAt": "2026-10-21T12:36:13.739Z",
    "importedAt": "2026-10-24T01:57:29.455Z",
    "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": "fs/9p: fix NULL pointer dereference on mkdir",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/9p: fix NULL pointer dereference on mkdir\n\nWhen a 9p tree was mounted with option 'posixacl', parent directory had a\ndefault ACL set for its subdirectories, e.g.:\n\n  setfacl -m default:group:simpsons:rwx parentdir\n\nthen creating a subdirectory crashed 9p client, as v9fs_fid_add() call in\nfunction v9fs_vfs_mkdir_dotl() sets the passed 'fid' pointer to NULL\n(since dafbe689736) even though the subsequent v9fs_set_create_acl() call\nexpects a valid non-NULL 'fid' pointer:\n\n  [   37.273191] BUG: kernel NULL pointer dereference, address: 0000000000000000\n  ...\n  [   37.322338] Call Trace:\n  [   37.323043]  <TASK>\n  [   37.323621] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434)\n  [   37.324448] ? page_fault_oops (arch/x86/mm/fault.c:714)\n  [   37.325532] ? search_module_extables (kernel/module/main.c:3733)\n  [   37.326742] ? p9_client_walk (net/9p/client.c:1165) 9pnet\n  [   37.328006] ? search_bpf_extables (kernel/bpf/core.c:804)\n  [   37.329142] ? exc_page_fault (./arch/x86/include/asm/paravirt.h:686 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538)\n  [   37.330196] ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:574)\n  [   37.331330] ? p9_client_walk (net/9p/client.c:1165) 9pnet\n  [   37.332562] ? v9fs_fid_xattr_get (fs/9p/xattr.c:30) 9p\n  [   37.333824] v9fs_fid_xattr_set (fs/9p/fid.h:23 fs/9p/xattr.c:121) 9p\n  [   37.335077] v9fs_set_acl (fs/9p/acl.c:276) 9p\n  [   37.336112] v9fs_set_create_acl (fs/9p/acl.c:307) 9p\n  [   37.337326] v9fs_vfs_mkdir_dotl (fs/9p/vfs_inode_dotl.c:411) 9p\n  [   37.338590] vfs_mkdir (fs/namei.c:4313)\n  [   37.339535] do_mkdirat (fs/namei.c:4336)\n  [   37.340465] __x64_sys_mkdir (fs/namei.c:4354)\n  [   37.341455] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\n  [   37.342447] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\nFix this by simply swapping the sequence of these two calls in\nv9fs_vfs_mkdir_dotl(), i.e. calling v9fs_set_create_acl() before\nv9fs_fid_add().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "dafbe689736f62c696ac64809b17bdc752cfbe76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b17edabd917142d9ecd058f7c6ee9da5e32af1dd"
            },
            {
              "version": "dafbe689736f62c696ac64809b17bdc752cfbe76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8522051c58d68146b93e8a5ba9987e83b3d64e7b"
            },
            {
              "version": "dafbe689736f62c696ac64809b17bdc752cfbe76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2139dea5c53e3bb63ac49a6901c85e525a80ee8a"
            },
            {
              "version": "dafbe689736f62c696ac64809b17bdc752cfbe76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6517b395cb1e43fbf3962dd93e6fb4a5e5ab100e"
            },
            {
              "version": "dafbe689736f62c696ac64809b17bdc752cfbe76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3f61ac7c65bdb26accb52f9db66313597e759821"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.0"
            },
            {
              "version": "6.6.160",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.23",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.13.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.13.*"
            },
            {
              "version": "6.14.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.14.*"
            },
            {
              "version": "6.15",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}