{
  "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-2022-49707",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49707",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-02-26T02:24:25.441Z",
    "updatedAt": "2026-05-11T19:05:11.366Z",
    "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": "ext4: add reserved GDT blocks check",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: add reserved GDT blocks check\n\nWe capture a NULL pointer issue when resizing a corrupt ext4 image which\nis freshly clear resize_inode feature (not run e2fsck). It could be\nsimply reproduced by following steps. The problem is because of the\nresize_inode feature was cleared, and it will convert the filesystem to\nmeta_bg mode in ext4_resize_fs(), but the es->s_reserved_gdt_blocks was\nnot reduced to zero, so could we mistakenly call reserve_backup_gdb()\nand passing an uninitialized resize_inode to it when adding new group\ndescriptors.\n\n mkfs.ext4 /dev/sda 3G\n tune2fs -O ^resize_inode /dev/sda #forget to run requested e2fsck\n mount /dev/sda /mnt\n resize2fs /dev/sda 8G\n\n ========\n BUG: kernel NULL pointer dereference, address: 0000000000000028\n CPU: 19 PID: 3243 Comm: resize2fs Not tainted 5.18.0-rc7-00001-gfde086c5ebfd #748\n ...\n RIP: 0010:ext4_flex_group_add+0xe08/0x2570\n ...\n Call Trace:\n  <TASK>\n  ext4_resize_fs+0xbec/0x1660\n  __ext4_ioctl+0x1749/0x24e0\n  ext4_ioctl+0x12/0x20\n  __x64_sys_ioctl+0xa6/0x110\n  do_syscall_64+0x3b/0x90\n  entry_SYSCALL_64_after_hwframe+0x44/0xae\n RIP: 0033:0x7f2dd739617b\n ========\n\nThe fix is simple, add a check in ext4_resize_begin() to make sure that\nthe es->s_reserved_gdt_blocks is zero when the resize_inode feature is\ndisabled.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0dc2fca8e4f9ac4a40e8424a10163369cca0cc06"
            },
            {
              "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7c921328ac760bba780bdace41f4cd045f7f1405"
            },
            {
              "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b9747263b13e5290ac4d63bec47e38f701303cad"
            },
            {
              "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fba54289176702a7caac0b64738406775817f451"
            },
            {
              "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bfd004a1d3a062aac300523d406ac1f3e5f1a82c"
            },
            {
              "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509",
              "status": "affected",
              "versionType": "git",
              "lessThan": "33b1bba31f4c784d33d2c2517964bdccdc9204cd"
            },
            {
              "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509",
              "status": "affected",
              "versionType": "git",
              "lessThan": "af75c481a2e45e70f62f5942c93695e95bf7bd21"
            },
            {
              "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b55c3cd102a6f48b90e61c44f7f3dda8c290c694"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.7",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.7"
            },
            {
              "version": "4.9.320",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "version": "4.14.285",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.249",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.200",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.124",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.49",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.18.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.18.*"
            },
            {
              "version": "5.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}