{
  "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-2023-53777",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53777",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-09T00:00:32.947Z",
    "updatedAt": "2026-05-11T19:51:20.826Z",
    "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": "erofs: kill hooked chains to avoid loops on deduplicated compressed images",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: kill hooked chains to avoid loops on deduplicated compressed images\n\nAfter heavily stressing EROFS with several images which include a\nhand-crafted image of repeated patterns for more than 46 days, I found\ntwo chains could be linked with each other almost simultaneously and\nform a loop so that the entire loop won't be submitted.  As a\nconsequence, the corresponding file pages will remain locked forever.\n\nIt can be _only_ observed on data-deduplicated compressed images.\nFor example, consider two chains with five pclusters in total:\n\tChain 1:  2->3->4->5    -- The tail pcluster is 5;\n        Chain 2:  5->1->2       -- The tail pcluster is 2.\n\nChain 2 could link to Chain 1 with pcluster 5; and Chain 1 could link\nto Chain 2 at the same time with pcluster 2.\n\nSince hooked chains are all linked locklessly now, I have no idea how\nto simply avoid the race.  Instead, let's avoid hooked chains completely\nuntil I could work out a proper way to fix this and end users finally\ntell us that it's needed to add it back.\n\nActually, this optimization can be found with multi-threaded workloads\n(especially even more often on deduplicated compressed images), yet I'm\nnot sure about the overall system impacts of not having this compared\nwith implementation complexity.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "267f2492c8f71dac44399988b510f9bf6b074a51",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d3b39ea24835ac03da1a30f93ae7c05d55a40191"
            },
            {
              "version": "267f2492c8f71dac44399988b510f9bf6b074a51",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b5b0d52f00e4bacb0ebdf47cd7016b0485fffad2"
            },
            {
              "version": "267f2492c8f71dac44399988b510f9bf6b074a51",
              "status": "affected",
              "versionType": "git",
              "lessThan": "10c2b98a40d9044a3e97f4697ca6213bad7e19c2"
            },
            {
              "version": "267f2492c8f71dac44399988b510f9bf6b074a51",
              "status": "affected",
              "versionType": "git",
              "lessThan": "967c28b23f6c89bb8eef6a046ea88afe0d7c1029"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.0"
            },
            {
              "version": "6.1.39",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.3.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "version": "6.4.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "version": "6.5",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}