ghsa-rpfq-qgpp-7qm9
Vulnerability from github
Published
2024-09-06 09:32
Modified
2024-09-10 18:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer

In af9035_i2c_master_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach af9035_i2c_master_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash.

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

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52915"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-06T09:15:02Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer\n\nIn af9035_i2c_master_xfer, msg is controlled by user. When msg[i].buf\nis null and msg[i].len is zero, former checks on msg[i].buf would be\npassed. Malicious data finally reach af9035_i2c_master_xfer. If accessing\nmsg[i].buf[0] without sanity check, null ptr deref would happen.\nWe add check on msg[i].len to prevent crash.\n\nSimilar commit:\ncommit 0ed554fd769a\n(\"media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()\")",
  "id": "GHSA-rpfq-qgpp-7qm9",
  "modified": "2024-09-10T18:30:42Z",
  "published": "2024-09-06T09:32:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52915"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0143f282b15f7cedc0392ea10050fb6000fd16e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/41b7181a40af84448a2b144fb02d8bf32b7e9a23"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c01ef65de0b321b2db1ef9abf8f1d15862b937e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7bf744f2de0a848fb1d717f5831b03db96feae89"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2f54ed7739dfdf42c4df0a11131aad7c8635464"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b49c6e5dd236787f13a062ec528d724169f11152"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9ef84a7c222497ecb5fdf93361c76931804825e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa58d9db5cad4bb7bb694b6837e3b96d87554f2b"
    }
  ],
  "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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