{
  "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-2022-49666",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49666",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-02-26T02:24:01.148Z",
    "updatedAt": "2026-05-23T15:22:42.733Z",
    "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": "powerpc/memhotplug: Add add_pages override for PPC",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/memhotplug: Add add_pages override for PPC\n\nWith commit ffa0b64e3be5 (\"powerpc: Fix virt_addr_valid() for 64-bit Book3E & 32-bit\")\nthe kernel now validate the addr against high_memory value. This results\nin the below BUG_ON with dax pfns.\n\n[  635.798741][T26531] kernel BUG at mm/page_alloc.c:5521!\n1:mon> e\ncpu 0x1: Vector: 700 (Program Check) at [c000000007287630]\n    pc: c00000000055ed48: free_pages.part.0+0x48/0x110\n    lr: c00000000053ca70: tlb_finish_mmu+0x80/0xd0\n    sp: c0000000072878d0\n   msr: 800000000282b033\n  current = 0xc00000000afabe00\n  paca    = 0xc00000037ffff300   irqmask: 0x03   irq_happened: 0x05\n    pid   = 26531, comm = 50-landscape-sy\nkernel BUG at :5521!\nLinux version 5.19.0-rc3-14659-g4ec05be7c2e1 (kvaneesh@ltc-boston8) (gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #625 SMP Thu Jun 23 00:35:43 CDT 2022\n1:mon> t\n[link register   ] c00000000053ca70 tlb_finish_mmu+0x80/0xd0\n[c0000000072878d0] c00000000053ca54 tlb_finish_mmu+0x64/0xd0 (unreliable)\n[c000000007287900] c000000000539424 exit_mmap+0xe4/0x2a0\n[c0000000072879e0] c00000000019fc1c mmput+0xcc/0x210\n[c000000007287a20] c000000000629230 begin_new_exec+0x5e0/0xf40\n[c000000007287ae0] c00000000070b3cc load_elf_binary+0x3ac/0x1e00\n[c000000007287c10] c000000000627af0 bprm_execve+0x3b0/0xaf0\n[c000000007287cd0] c000000000628414 do_execveat_common.isra.0+0x1e4/0x310\n[c000000007287d80] c00000000062858c sys_execve+0x4c/0x60\n[c000000007287db0] c00000000002c1b0 system_call_exception+0x160/0x2c0\n[c000000007287e10] c00000000000c53c system_call_common+0xec/0x250\n\nThe fix is to make sure we update high_memory on memory hotplug.\nThis is similar to what x86 does in commit 3072e413e305 (\"mm/memory_hotplug: introduce add_pages\")",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "fddb88bd266f4513abab7c36bca98935c9148a98",
              "status": "affected",
              "versionType": "git",
              "lessThan": "89296ac435e2cf8a5101f7fab8f0c7b754b92052"
            },
            {
              "version": "ffa0b64e3be58519ae472ea29a1a1ad681e32f48",
              "status": "affected",
              "versionType": "git",
              "lessThan": "84d146fd35a01b08e9515041de60f0f915a417d5"
            },
            {
              "version": "ffa0b64e3be58519ae472ea29a1a1ad681e32f48",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ac790d09885d36143076e7e02825c541e8eee899"
            },
            {
              "version": "deab81144d5a043f42804207fb76cfbd8a806978",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "d36febbcd537fcc50284e8b89609632d0146529f",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "a3727c25eacd7e437c4f560957fa3a376fe93e6b",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "cbc065efcba000ad8f615f506ebe61b6d3c5145b",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.15.34",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.53"
            },
            {
              "version": "5.4.190",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "5.10.111",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.11"
            },
            {
              "version": "5.16.20",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.17"
            },
            {
              "version": "5.17.3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.18"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.18"
            },
            {
              "version": "5.15.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.18.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.18.*"
            },
            {
              "version": "5.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}