{
  "cveId": "CVE-2023-53244",
  "url": "https://patchblox.com/security/cve/CVE-2023-53244",
  "summary": "CVE-2023-53244 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53244, released September 15, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  media: pci: tw68: Fix null-ptr-deref bug in buf...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  media: pci: tw68: Fix null-ptr-deref bug in buf prepare and finish  When the driver calls tw68_risc_buffer() to prepare the buffer, the function call dma_alloc_coherent may fail, resulting in a empty buffer buf-\u003Ecpu. Later when we free the buffer or access the buffer, null ptr deref is triggered.  This bug is similar to the following one: https://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71.  We believe the bug can be also dynamically triggered from user side. Similarly, we fix this by checking the return value of tw68_risc_buffer() and the value of buf-\u003Ecpu before buffer free.",
  "published": "2025-09-15T15:15:51Z",
  "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": 0.00148,
  "epssPercentile": 0.04037,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.37-1",
      "fix": "DEBIAN-CVE-2023-53244",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53244",
      "released": "2025-09-15T15:15:51Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53244",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53244",
      "released": "2025-09-15T15:15:51Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53244",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53244",
      "released": "2025-09-15T15:15:51Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}