{
  "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-2023-52910",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-52910",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2024-08-21T06:10:51.337Z",
    "updatedAt": "2026-08-05T09:11:57.069Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "iommu/iova: Fix alloc iova overflows issue",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/iova: Fix alloc iova overflows issue\n\nIn __alloc_and_insert_iova_range, there is an issue that retry_pfn\noverflows. The value of iovad->anchor.pfn_hi is ~0UL, then when\niovad->cached_node is iovad->anchor, curr_iova->pfn_hi + 1 will\noverflow. As a result, if the retry logic is executed, low_pfn is\nupdated to 0, and then new_pfn < low_pfn returns false to make the\nallocation successful.\n\nThis issue occurs in the following two situations:\n1. The first iova size exceeds the domain size. When initializing\niova domain, iovad->cached_node is assigned as iovad->anchor. For\nexample, the iova domain size is 10M, start_pfn is 0x1_F000_0000,\nand the iova size allocated for the first time is 11M. The\nfollowing is the log information, new->pfn_lo is smaller than\niovad->cached_node.\n\nExample log as follows:\n[  223.798112][T1705487] sh: [name:iova&]__alloc_and_insert_iova_range\nstart_pfn:0x1f0000,retry_pfn:0x0,size:0xb00,limit_pfn:0x1f0a00\n[  223.799590][T1705487] sh: [name:iova&]__alloc_and_insert_iova_range\nsuccess start_pfn:0x1f0000,new->pfn_lo:0x1efe00,new->pfn_hi:0x1f08ff\n\n2. The node with the largest iova->pfn_lo value in the iova domain\nis deleted, iovad->cached_node will be updated to iovad->anchor,\nand then the alloc iova size exceeds the maximum iova size that can\nbe allocated in the domain.\n\nAfter judging that retry_pfn is less than limit_pfn, call retry_pfn+1\nto fix the overflow issue.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4e89dce725213d3d0b0475211b500eda4ef4bf2f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c929a230c84441e400c32e7b7b4ab763711fb63e"
            },
            {
              "version": "4e89dce725213d3d0b0475211b500eda4ef4bf2f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "61cbf790e7329ed78877560be7136f0b911bba7f"
            },
            {
              "version": "4e89dce725213d3d0b0475211b500eda4ef4bf2f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dcdb3ba7e2a8caae7bfefd603bc22fd0ce9a389c"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.11"
            },
            {
              "version": "5.15.89",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}