CVE-2023-53481 (GCVE-0-2023-53481)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:42 – Updated: 2026-05-11 19:45
VLAI
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: ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed Following process will trigger an infinite loop in ubi_wl_put_peb(): ubifs_bgt ubi_bgt ubifs_leb_unmap ubi_leb_unmap ubi_eba_unmap_leb ubi_wl_put_peb wear_leveling_worker e1 = rb_entry(rb_first(&ubi->used) e2 = get_peb_for_wl(ubi) ubi_io_read_vid_hdr // return err (flash fault) out_error: ubi->move_from = ubi->move_to = NULL wl_entry_destroy(ubi, e1) ubi->lookuptbl[e->pnum] = NULL retry: e = ubi->lookuptbl[pnum]; // return NULL if (e == ubi->move_from) { // NULL == NULL gets true goto retry; // infinite loop !!! $ top PID USER PR NI VIRT RES SHR S %CPU %MEM COMMAND 7676 root 20 0 0 0 0 R 100.0 0.0 ubifs_bgt0_0 Fix it by: 1) Letting ubi_wl_put_peb() returns directly if wearl leveling entry has been removed from 'ubi->lookuptbl'. 2) Using 'ubi->wl_lock' protecting wl entry deletion to preventing an use-after-free problem for wl entry in ubi_wl_put_peb(). Fetch a reproducer in [Link].
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 43f9b25a9cdd7b177f77f026b1461abd1abbd174 , < b40d2fbf47af58377e898b5062077a47bb28a132 (git)
Affected: 43f9b25a9cdd7b177f77f026b1461abd1abbd174 , < f006f596fe851c3b6aae60b79f89f89f0e515d2f (git)
Affected: 43f9b25a9cdd7b177f77f026b1461abd1abbd174 , < b5be23f6ae610bdb262160a1f294afee6d0e6a69 (git)
Affected: 43f9b25a9cdd7b177f77f026b1461abd1abbd174 , < 8a18856e074479bd050b01e688c58defadce7ab0 (git)
Affected: 43f9b25a9cdd7b177f77f026b1461abd1abbd174 , < 3afaaf6f5867dc4ad383808d4053f428ec7b867d (git)
Affected: 43f9b25a9cdd7b177f77f026b1461abd1abbd174 , < cc4bc532acda66189bddc03b3fe1ad689d9a48a2 (git)
Affected: 43f9b25a9cdd7b177f77f026b1461abd1abbd174 , < 5af1c643184a5d09ff5b3f334077a4d0a163c677 (git)
Affected: 43f9b25a9cdd7b177f77f026b1461abd1abbd174 , < 4d57a7333e26040f2b583983e1970d9d460e56b0 (git)
Create a notification for this product.
Linux Linux Affected: 2.6.25
Unaffected: 0 , < 2.6.25 (semver)
Unaffected: 4.14.308 , ≤ 4.14.* (semver)
Unaffected: 4.19.276 , ≤ 4.19.* (semver)
Unaffected: 5.4.235 , ≤ 5.4.* (semver)
Unaffected: 5.10.173 , ≤ 5.10.* (semver)
Unaffected: 5.15.100 , ≤ 5.15.* (semver)
Unaffected: 6.1.18 , ≤ 6.1.* (semver)
Unaffected: 6.2.5 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "value": "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(\u0026ubi-\u003eused)\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-\u003emove_from = ubi-\u003emove_to = NULL\n\t\t\t    wl_entry_destroy(ubi, e1)\n\t\t\t      ubi-\u003elookuptbl[e-\u003epnum] = NULL\n      retry:\n        e = ubi-\u003elookuptbl[pnum];\t// return NULL\n\tif (e == ubi-\u003emove_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 \u0027ubi-\u003elookuptbl\u0027.\n 2) Using \u0027ubi-\u003ewl_lock\u0027 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]."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:45:49.295Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/b40d2fbf47af58377e898b5062077a47bb28a132"
        },
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          "url": "https://git.kernel.org/stable/c/f006f596fe851c3b6aae60b79f89f89f0e515d2f"
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          "url": "https://git.kernel.org/stable/c/b5be23f6ae610bdb262160a1f294afee6d0e6a69"
        },
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          "url": "https://git.kernel.org/stable/c/8a18856e074479bd050b01e688c58defadce7ab0"
        },
        {
          "url": "https://git.kernel.org/stable/c/3afaaf6f5867dc4ad383808d4053f428ec7b867d"
        },
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          "url": "https://git.kernel.org/stable/c/cc4bc532acda66189bddc03b3fe1ad689d9a48a2"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/4d57a7333e26040f2b583983e1970d9d460e56b0"
        }
      ],
      "title": "ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed",
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    "cveId": "CVE-2023-53481",
    "datePublished": "2025-10-01T11:42:49.825Z",
    "dateReserved": "2025-10-01T11:39:39.402Z",
    "dateUpdated": "2026-05-11T19:45:49.295Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
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      "date": "2026-07-14",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53481\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-01T12:15:50.743\",\"lastModified\":\"2026-06-17T06:45:26.273\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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(\u0026ubi-\u003eused)\\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-\u003emove_from = ubi-\u003emove_to = NULL\\n\\t\\t\\t    wl_entry_destroy(ubi, e1)\\n\\t\\t\\t      ubi-\u003elookuptbl[e-\u003epnum] = NULL\\n      retry:\\n        e = ubi-\u003elookuptbl[pnum];\\t// return NULL\\n\\tif (e == ubi-\u003emove_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 \u0027ubi-\u003elookuptbl\u0027.\\n 2) Using \u0027ubi-\u003ewl_lock\u0027 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\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/mtd/ubi/wl.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"43f9b25a9cdd7b177f77f026b1461abd1abbd174\",\"lessThan\":\"b40d2fbf47af58377e898b5062077a47bb28a132\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43f9b25a9cdd7b177f77f026b1461abd1abbd174\",\"lessThan\":\"f006f596fe851c3b6aae60b79f89f89f0e515d2f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43f9b25a9cdd7b177f77f026b1461abd1abbd174\",\"lessThan\":\"b5be23f6ae610bdb262160a1f294afee6d0e6a69\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43f9b25a9cdd7b177f77f026b1461abd1abbd174\",\"lessThan\":\"8a18856e074479bd050b01e688c58defadce7ab0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43f9b25a9cdd7b177f77f026b1461abd1abbd174\",\"lessThan\":\"3afaaf6f5867dc4ad383808d4053f428ec7b867d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43f9b25a9cdd7b177f77f026b1461abd1abbd174\",\"lessThan\":\"cc4bc532acda66189bddc03b3fe1ad689d9a48a2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43f9b25a9cdd7b177f77f026b1461abd1abbd174\",\"lessThan\":\"5af1c643184a5d09ff5b3f334077a4d0a163c677\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43f9b25a9cdd7b177f77f026b1461abd1abbd174\",\"lessThan\":\"4d57a7333e26040f2b583983e1970d9d460e56b0\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/mtd/ubi/wl.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.25\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.25\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.308\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.276\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.235\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.173\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.100\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.18\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2.5\",\"lessThanOrEqual\":\"6.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-835\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.25\",\"versionEndExcluding\":\"4.14.308\",\"matchCriteriaId\":\"3619A302-E12E-46AC-B1E4-182D5643C493\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.276\",\"matchCriteriaId\":\"C902FC54-DDBD-4DA6-BFEF-26889A267464\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.235\",\"matchCriteriaId\":\"13DD5E68-8CB4-46EE-9A8F-C7F6C1A84430\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.173\",\"matchCriteriaId\":\"4D810CFB-B7C5-493C-B98A-0D5F0D8A47B6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.100\",\"matchCriteriaId\":\"6D7E5BB5-018B-46B7-A2C4-1ADB75099822\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.18\",\"matchCriteriaId\":\"C8D24FD5-5A98-4042-9419-39DCFCBEFFF5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.2.5\",\"matchCriteriaId\":\"0575B33B-A320-4E51-84CA-10C937341E02\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3afaaf6f5867dc4ad383808d4053f428ec7b867d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4d57a7333e26040f2b583983e1970d9d460e56b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5af1c643184a5d09ff5b3f334077a4d0a163c677\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8a18856e074479bd050b01e688c58defadce7ab0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b40d2fbf47af58377e898b5062077a47bb28a132\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b5be23f6ae610bdb262160a1f294afee6d0e6a69\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cc4bc532acda66189bddc03b3fe1ad689d9a48a2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f006f596fe851c3b6aae60b79f89f89f0e515d2f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T22:24:05+00:00",
      "cve": "CVE-2023-53481",
      "id": "CVE-2023-53481",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53481.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.