GHSA-F3Q5-7M6P-4QXQ

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-06-30 03:37
VLAI
Details

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

USB: serial: io_ti: fix heap overflow in get_manuf_info()

get_manuf_info() reads le16_to_cpu(rom_desc->Size) bytes from the device I2C EEPROM into a buffer allocated with kmalloc_obj(), which is sizeof(struct edge_ti_manuf_descriptor) = 10 bytes.

The Size field comes from the device and is only validated (in check_i2c_image()) to make sure the descriptor fits within TI_MAX_I2C_SIZE (16384 bytes), not against the destination buffer size. A malicious USB device can therefore set Size to any value up to 16377, causing a heap overflow of up to 16367 bytes when plugged into a host running this driver.

valid_csum() is called after read_rom() and also iterates buffer[0..Size-1], compounding the out-of-bounds access.

Fix by rejecting descriptors with unexpected length before calling read_rom().

[ johan: amend commit message; also check for short descriptors ]

Severity
7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-53196"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:37Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: io_ti: fix heap overflow in get_manuf_info()\n\nget_manuf_info() reads le16_to_cpu(rom_desc-\u003eSize) bytes from the\ndevice I2C EEPROM into a buffer allocated with kmalloc_obj(), which\nis sizeof(struct edge_ti_manuf_descriptor) = 10 bytes.\n\nThe Size field comes from the device and is only validated (in\ncheck_i2c_image()) to make sure the descriptor fits within\nTI_MAX_I2C_SIZE (16384 bytes), not against the destination buffer size.\nA malicious USB device can therefore set Size to any value up to 16377,\ncausing a heap overflow of up to 16367 bytes when plugged into a host\nrunning this driver.\n\nvalid_csum() is called after read_rom() and also iterates\nbuffer[0..Size-1], compounding the out-of-bounds access.\n\nFix by rejecting descriptors with unexpected length before calling\nread_rom().\n\n[ johan: amend commit message; also check for short descriptors ]",
  "id": "GHSA-f3q5-7m6p-4qxq",
  "modified": "2026-06-30T03:37:13Z",
  "published": "2026-06-25T09:31:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53196"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-53196"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492750"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/183c1076eca43bbb3e7bdf597456f91d81c73e74"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/561edb021486e6723d841926aa4b48097da06190"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b849f30d1a9e66aae6b715aaef66e427390cb081"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfd634f6dfd40c49a84f9bddc2867a80e2e2623a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d214d2341d4f9f447e36a7d012cdf6a6631a55f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d92f17af7097d10bdeddf26f66f34b354104b277"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e168db91442b94e64fa82a7dd297983d48ea5cc0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f96cf7bf9fbf15d7fcf0c91fec47ba8a010369ea"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53196.json"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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