GHSA-29X9-4344-PX4H

Vulnerability from github – Published: 2025-09-05 18:31 – Updated: 2026-01-22 18:50
VLAI?
Details

In the Linux kernel, the following vulnerability has been resolved:

media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb()

In dib7090p_rw_on_apb, msg is controlled by user. When msg[0].buf is null and msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing msg[0].buf[2] without sanity check, null pointer deref would happen. We add check on msg[0].len to prevent crash. Similar issue occurs when access msg[1].buf[0] and msg[1].buf[1].

Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2025-38694"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-04T16:15:37Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb()\n\nIn dib7090p_rw_on_apb, msg is controlled by user. When msg[0].buf is null and\nmsg[0].len is zero, former checks on msg[0].buf would be passed. If accessing\nmsg[0].buf[2] without sanity check, null pointer deref would happen. We add\ncheck on msg[0].len to prevent crash. Similar issue occurs when access\nmsg[1].buf[0] and msg[1].buf[1].\n\nSimilar commit: commit 0ed554fd769a (\"media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()\")",
  "id": "GHSA-29x9-4344-px4h",
  "modified": "2026-01-22T18:50:53Z",
  "published": "2025-09-05T18:31:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38694"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/09906650484a09b3a4d4b3d3065395856810becd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0bb32863426afe0badac25c28d59021f211d0f48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19eb5d8e6aa1169d368a4d69aae5572950deb89d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/529fd5593b721e6f4370c591f5086649ed149ff6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0f744d6cdde81d7382e183f77a4080a39b206cd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc07cae4f36bb18d5b6a9ed835c1278ca44ec82e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c33280d6bd668dbdc5a5f07887cc63a52ab4789c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce5cac69b2edac3e3246fee03e8f4c2a1075238b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce8b7c711b9c4f040b5419729d0972db8e374324"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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