GHSA-W643-8CR7-VJMG

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31
VLAI
Details

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

iio: gyro: bmg160: bail out when bandwidth/filter is not in table

bmg160_get_filter() walks bmg160_samp_freq_table[] looking for the entry matching the bw_bits value read from the chip:

for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) {
    if (bmg160_samp_freq_table[i].bw_bits == bw_bits)
        break;
}
*val = bmg160_samp_freq_table[i].filter;

If no entry matches, i ends up equal to the array size and the next line reads one slot past the end. bmg160_set_filter() has the same shape, driven by 'val' instead of bw_bits.

smatch flags both:

drivers/iio/gyro/bmg160_core.c:204 bmg160_get_filter() error: buffer overflow 'bmg160_samp_freq_table' 7 <= 7 drivers/iio/gyro/bmg160_core.c:222 bmg160_set_filter() error: buffer overflow 'bmg160_samp_freq_table' 7 <= 7

Return -EINVAL when no entry matches.

The set_filter() path is reachable from userspace via the sysfs in_anglvel_filter_low_pass_3db_frequency interface, so userspace can trivially trigger the out-of-bounds read with a value that is not in bmg160_samp_freq_table[].filter.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64495"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:35Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: gyro: bmg160: bail out when bandwidth/filter is not in table\n\nbmg160_get_filter() walks bmg160_samp_freq_table[] looking for the entry\nmatching the bw_bits value read from the chip:\n\n\tfor (i = 0; i \u003c ARRAY_SIZE(bmg160_samp_freq_table); ++i) {\n\t\tif (bmg160_samp_freq_table[i].bw_bits == bw_bits)\n\t\t\tbreak;\n\t}\n\t*val = bmg160_samp_freq_table[i].filter;\n\nIf no entry matches, i ends up equal to the array size and the next line\nreads one slot past the end. bmg160_set_filter() has the same shape, driven\nby \u0027val\u0027 instead of bw_bits.\n\nsmatch flags both:\n\n  drivers/iio/gyro/bmg160_core.c:204 bmg160_get_filter() error:\n  buffer overflow \u0027bmg160_samp_freq_table\u0027 7 \u003c= 7\n  drivers/iio/gyro/bmg160_core.c:222 bmg160_set_filter() error:\n  buffer overflow \u0027bmg160_samp_freq_table\u0027 7 \u003c= 7\n\nReturn -EINVAL when no entry matches.\n\nThe set_filter() path is reachable from userspace via the sysfs\nin_anglvel_filter_low_pass_3db_frequency interface, so userspace can\ntrivially trigger the out-of-bounds read with a value that is not in\nbmg160_samp_freq_table[].filter.",
  "id": "GHSA-w643-8cr7-vjmg",
  "modified": "2026-07-25T12:31:38Z",
  "published": "2026-07-25T12:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64495"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/029481cddb98697716f4bf3021d035eaf2ca0e1f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1dc3a833be11e5d503038e3c701745fd0e03903c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c8675468862161d1c59130266852b66867d3861"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77e56ebb1786f4296afd5fa46975a989b285ae65"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7bbf02b63961fc1768c9c654392c11f2077d4c59"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8320c77e67382d5d55d77043a5f60a867d408a2b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d202515baea4e2e3be448d1590099af28f2346d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d85ee50f58dd83fe74f6d0bf8bd345c657b216e8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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