GHSA-59MW-5P3C-3RH3

Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-11-10 21:30
VLAI
Details

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

pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map

Here is the BUG report by KASAN about null pointer dereference:

BUG: KASAN: null-ptr-deref in strcmp+0x2e/0x50 Read of size 1 at addr 0000000000000000 by task python3/2640 Call Trace: strcmp __of_find_property of_find_property pinctrl_dt_to_map

kasprintf() would return NULL pointer when kmalloc() fail to allocate. So directly return ENOMEM, if kasprintf() return NULL pointer.

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-2022-49832"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T15:16:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map\n\nHere is the BUG report by KASAN about null pointer dereference:\n\nBUG: KASAN: null-ptr-deref in strcmp+0x2e/0x50\nRead of size 1 at addr 0000000000000000 by task python3/2640\nCall Trace:\n strcmp\n __of_find_property\n of_find_property\n pinctrl_dt_to_map\n\nkasprintf() would return NULL pointer when kmalloc() fail to allocate.\nSo directly return ENOMEM, if kasprintf() return NULL pointer.",
  "id": "GHSA-59mw-5p3c-3rh3",
  "modified": "2025-11-10T21:30:28Z",
  "published": "2025-05-01T15:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49832"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/040f726fecd88121f3b95e70369785ad452dddf9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5834a3a98cd266ad35a229923c0adbd0addc8d68"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/777430aa4ddccaa5accec6db90ffc1d47f00d471"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91d5c5060ee24fe8da88cd585bb43b843d2f0dce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/97e5b508e96176f1a73888ed89df396d7041bfcb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a988dcd3dd9e691c5ccc3324b209688f3b5453e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aaf552c5d53abe4659176e099575fe870d2e4768"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4d9f55cd38435358bc16d580612bc0d798d7b4c"
    }
  ],
  "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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