{
  "cveId": "CVE-2023-53481",
  "url": "https://patchblox.com/security/cve/CVE-2023-53481",
  "summary": "CVE-2023-53481 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53481, released October 1, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ubi: ubi_wl_put_peb: Fix infinite loop when wear...",
  "description": "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():  \tubifs_bgt\t\tubi_bgt ubifs_leb_unmap   ubi_leb_unmap     ubi_eba_unmap_leb       ubi_wl_put_peb\twear_leveling_worker                           e1 = rb_entry(rb_first(\u0026ubi-\u003Eused) \t\t\t  e2 = get_peb_for_wl(ubi) \t\t\t  ubi_io_read_vid_hdr  // return err (flash fault) \t\t\t  out_error: \t\t\t    ubi-\u003Emove_from = ubi-\u003Emove_to = NULL \t\t\t    wl_entry_destroy(ubi, e1) \t\t\t      ubi-\u003Elookuptbl[e-\u003Epnum] = NULL       retry:         e = ubi-\u003Elookuptbl[pnum];\t// return NULL \tif (e == ubi-\u003Emove_from) {\t// NULL == NULL gets true \t  goto retry;\t\t\t// 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 \u0027ubi-\u003Elookuptbl\u0027.  2) Using \u0027ubi-\u003Ewl_lock\u0027 protecting wl entry deletion to preventing an     use-after-free problem for wl entry in ubi_wl_put_peb().  Fetch a reproducer in [Link].",
  "published": "2025-10-01T12:15:50Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00164,
  "epssPercentile": 0.05597,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53481",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53481",
      "released": "2025-10-01T12:15:50Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53481",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53481",
      "released": "2025-10-01T12:15:50Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53481",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53481",
      "released": "2025-10-01T12:15:50Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}