CVE-2023-53481 (GCVE-0-2023-53481)
Vulnerability from cvelistv5
Published
2025-10-01 11:42
Modified
2025-10-01 11:42
Severity ?
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].
References
Impacted products
Vendor Product Version
Linux Linux Version: 43f9b25a9cdd7b177f77f026b1461abd1abbd174
Version: 43f9b25a9cdd7b177f77f026b1461abd1abbd174
Version: 43f9b25a9cdd7b177f77f026b1461abd1abbd174
Version: 43f9b25a9cdd7b177f77f026b1461abd1abbd174
Version: 43f9b25a9cdd7b177f77f026b1461abd1abbd174
Version: 43f9b25a9cdd7b177f77f026b1461abd1abbd174
Version: 43f9b25a9cdd7b177f77f026b1461abd1abbd174
Version: 43f9b25a9cdd7b177f77f026b1461abd1abbd174
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mtd/ubi/wl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
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              "versionType": "git"
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              "versionType": "git"
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            {
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              "versionType": "git"
            }
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/mtd/ubi/wl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.25"
            },
            {
              "lessThan": "2.6.25",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.308",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.276",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.235",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.173",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.100",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.308",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.276",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
                },
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.235",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.173",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.100",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.18",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.5",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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]."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-01T11:42:49.825Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b40d2fbf47af58377e898b5062077a47bb28a132"
        },
        {
          "url": "https://git.kernel.org/stable/c/f006f596fe851c3b6aae60b79f89f89f0e515d2f"
        },
        {
          "url": "https://git.kernel.org/stable/c/b5be23f6ae610bdb262160a1f294afee6d0e6a69"
        },
        {
          "url": "https://git.kernel.org/stable/c/8a18856e074479bd050b01e688c58defadce7ab0"
        },
        {
          "url": "https://git.kernel.org/stable/c/3afaaf6f5867dc4ad383808d4053f428ec7b867d"
        },
        {
          "url": "https://git.kernel.org/stable/c/cc4bc532acda66189bddc03b3fe1ad689d9a48a2"
        },
        {
          "url": "https://git.kernel.org/stable/c/5af1c643184a5d09ff5b3f334077a4d0a163c677"
        },
        {
          "url": "https://git.kernel.org/stable/c/4d57a7333e26040f2b583983e1970d9d460e56b0"
        }
      ],
      "title": "ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53481",
    "datePublished": "2025-10-01T11:42:49.825Z",
    "dateReserved": "2025-10-01T11:39:39.402Z",
    "dateUpdated": "2025-10-01T11:42:49.825Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53481\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-01T12:15:50.743\",\"lastModified\":\"2025-10-02T19:12:17.160\",\"vulnStatus\":\"Awaiting Analysis\",\"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].\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3afaaf6f5867dc4ad383808d4053f428ec7b867d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4d57a7333e26040f2b583983e1970d9d460e56b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5af1c643184a5d09ff5b3f334077a4d0a163c677\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8a18856e074479bd050b01e688c58defadce7ab0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b40d2fbf47af58377e898b5062077a47bb28a132\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b5be23f6ae610bdb262160a1f294afee6d0e6a69\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cc4bc532acda66189bddc03b3fe1ad689d9a48a2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f006f596fe851c3b6aae60b79f89f89f0e515d2f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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