{
  "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-2023-53189",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53189",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-15T14:05:26.685Z",
    "updatedAt": "2026-10-15T21:41:27.813Z",
    "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": "ipv6/addrconf: fix a potential refcount underflow for idev",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6/addrconf: fix a potential refcount underflow for idev\n\nNow in addrconf_mod_rs_timer(), reference idev depends on whether\nrs_timer is not pending. Then modify rs_timer timeout.\n\nThere is a time gap in [1], during which if the pending rs_timer\nbecomes not pending. It will miss to hold idev, but the rs_timer\nis activated. Thus rs_timer callback function addrconf_rs_timer()\nwill be executed and put idev later without holding idev. A refcount\nunderflow issue for idev can be caused by this.\n\n\tif (!timer_pending(&idev->rs_timer))\n\t\tin6_dev_hold(idev);\n\t\t  <--------------[1]\n\tmod_timer(&idev->rs_timer, jiffies + when);\n\nTo fix the issue, hold idev if mod_timer() return 0.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c6395e32935d35e6f935e7caf1c2dac5a95943b4"
            },
            {
              "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
              "status": "affected",
              "versionType": "git",
              "lessThan": "df62fdcd004afa72ecbed0e862ebb983acd3aa57"
            },
            {
              "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c7eeba47058532f6077d6a658e38b6698f6ae71a"
            },
            {
              "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2ad31ce40e8182860b631e37209e93e543790b7c"
            },
            {
              "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
              "status": "affected",
              "versionType": "git",
              "lessThan": "82abd1c37d3bf2a2658b34772c17a25a6f9cca42"
            },
            {
              "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
              "status": "affected",
              "versionType": "git",
              "lessThan": "436b7cc7eae7851c184b671ed7a4a64c750b86f7"
            },
            {
              "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1f656e483eb4733d62f18dfb206a49b78f60f495"
            },
            {
              "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
              "status": "affected",
              "versionType": "git",
              "lessThan": "06a0716949c22e2aefb648526580671197151acc"
            },
            {
              "version": "973d5956f754cfc306f5e274d71503498f4b0324",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "3.10.105",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.11"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.11"
            },
            {
              "version": "4.14.322",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.291",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.251",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.121",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.4.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "version": "6.5",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}