ghsa-4667-xxv8-3pq6
Vulnerability from github
Published
2024-10-21 21:30
Modified
2024-10-24 18:30
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Details

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

iio: health: afe4403: Fix oob read in afe4403_read_raw

KASAN report out-of-bounds read as follows:

BUG: KASAN: global-out-of-bounds in afe4403_read_raw+0x42e/0x4c0 Read of size 4 at addr ffffffffc02ac638 by task cat/279

Call Trace: afe4403_read_raw iio_read_channel_info dev_attr_show

The buggy address belongs to the variable: afe4403_channel_leds+0x18/0xffffffffffffe9e0

This issue can be reproduced by singe command:

$ cat /sys/bus/spi/devices/spi0.0/iio\:device0/in_intensity6_raw

The array size of afe4403_channel_leds is less than channels, so access with chan->address cause OOB read in afe4403_read_raw. Fix it by moving access before use it.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49031"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T20:15:13Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: health: afe4403: Fix oob read in afe4403_read_raw\n\nKASAN report out-of-bounds read as follows:\n\nBUG: KASAN: global-out-of-bounds in afe4403_read_raw+0x42e/0x4c0\nRead of size 4 at addr ffffffffc02ac638 by task cat/279\n\nCall Trace:\n afe4403_read_raw\n iio_read_channel_info\n dev_attr_show\n\nThe buggy address belongs to the variable:\n afe4403_channel_leds+0x18/0xffffffffffffe9e0\n\nThis issue can be reproduced by singe command:\n\n $ cat /sys/bus/spi/devices/spi0.0/iio\\:device0/in_intensity6_raw\n\nThe array size of afe4403_channel_leds is less than channels, so access\nwith chan-\u003eaddress cause OOB read in afe4403_read_raw. Fix it by moving\naccess before use it.",
  "id": "GHSA-4667-xxv8-3pq6",
  "modified": "2024-10-24T18:30:42Z",
  "published": "2024-10-21T21:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49031"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06c6ce21cec77dfa860d57e7a006000a57812efb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d6a437064ffbe685c67ddb16dfc0946074c6c3f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58143c1ed5882c138a3cd2251a336fc8755f23d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/726fa3e4ab97dcff1c745bdc4fb137366cb8d3df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98afcb5f3be645d330c74c5194ba0d80e26f95e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1756af172fb80a3edc143772d49e166ec691b6c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9268df36818ee4eaaaeadc80009b442a5ca69c9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7e76a77aabef8989cbc0a8417af1aa040620867"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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