{
  "cveId": "CVE-2023-53991",
  "url": "https://patchblox.com/security/cve/CVE-2023-53991",
  "summary": "CVE-2023-53991 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53991, released December 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  drm/msm/dpu: Disallow unallocated resources to b...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/msm/dpu: Disallow unallocated resources to be returned  In the event that the topology requests resources that have not been created by the system (because they are typically not represented in dpu_mdss_cfg ^1), the resource(s) in global_state (in this case DSC blocks, until their allocation/assignment is being sanity-checked in \u0022drm/msm/dpu: Reject topologies for which no DSC blocks are available\u0022) remain NULL but will still be returned out of dpu_rm_get_assigned_resources, where the caller expects to get an array containing num_blks valid pointers (but instead gets these NULLs).  To prevent this from happening, where null-pointer dereferences typically result in a hard-to-debug platform lockup, num_blks shouldn\u0027t increase past NULL blocks and will print an error and break instead. After all, max_blks represents the static size of the maximum number of blocks whereas the actual amount varies per platform.  ^1: which can happen after a git rebase ended up moving additions to _dpu_cfg to a different struct which has the same patch context.  Patchwork: https://patchwork.freedesktop.org/patch/517636/",
  "published": "2025-12-24T11:15:52Z",
  "severity": "",
  "epss": 0.002,
  "epssPercentile": 0.09924,
  "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-2023-53991",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53991",
      "released": "2025-12-24T11:15:52Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53991",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53991",
      "released": "2025-12-24T11:15:52Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53991",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53991",
      "released": "2025-12-24T11:15:52Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T01:44:33Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}