{
  "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-2023-53481",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53481",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-01T11:42:49.825Z",
    "updatedAt": "2026-10-15T21:41:28.594Z",
    "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": "ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed\n\nFollowing process will trigger an infinite loop in ubi_wl_put_peb():\n\n\tubifs_bgt\t\tubi_bgt\nubifs_leb_unmap\n  ubi_leb_unmap\n    ubi_eba_unmap_leb\n      ubi_wl_put_peb\twear_leveling_worker\n                          e1 = rb_entry(rb_first(&ubi->used)\n\t\t\t  e2 = get_peb_for_wl(ubi)\n\t\t\t  ubi_io_read_vid_hdr  // return err (flash fault)\n\t\t\t  out_error:\n\t\t\t    ubi->move_from = ubi->move_to = NULL\n\t\t\t    wl_entry_destroy(ubi, e1)\n\t\t\t      ubi->lookuptbl[e->pnum] = NULL\n      retry:\n        e = ubi->lookuptbl[pnum];\t// return NULL\n\tif (e == ubi->move_from) {\t// NULL == NULL gets true\n\t  goto retry;\t\t\t// infinite loop !!!\n\n$ top\n  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     COMMAND\n  7676 root     20   0       0      0      0 R 100.0  0.0  ubifs_bgt0_0\n\nFix it by:\n 1) Letting ubi_wl_put_peb() returns directly if wearl leveling entry has\n    been removed from 'ubi->lookuptbl'.\n 2) Using 'ubi->wl_lock' protecting wl entry deletion to preventing an\n    use-after-free problem for wl entry in ubi_wl_put_peb().\n\nFetch a reproducer in [Link].",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b40d2fbf47af58377e898b5062077a47bb28a132"
            },
            {
              "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f006f596fe851c3b6aae60b79f89f89f0e515d2f"
            },
            {
              "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b5be23f6ae610bdb262160a1f294afee6d0e6a69"
            },
            {
              "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8a18856e074479bd050b01e688c58defadce7ab0"
            },
            {
              "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3afaaf6f5867dc4ad383808d4053f428ec7b867d"
            },
            {
              "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cc4bc532acda66189bddc03b3fe1ad689d9a48a2"
            },
            {
              "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5af1c643184a5d09ff5b3f334077a4d0a163c677"
            },
            {
              "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4d57a7333e26040f2b583983e1970d9d460e56b0"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.25",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.25"
            },
            {
              "version": "4.14.308",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.276",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.235",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.173",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.100",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.18",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "version": "6.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}