Description
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 ]
Published: 2026-06-25
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The Linux usb serial io_ti driver contains a heap overflow that allows a malicious USB device to set an I2C EEPROM Size field up to 16377 bytes, overflowing a 10‑byte buffer in get_manuf_info() and corrupting kernel memory, potentially leading to arbitrary code execution or a kernel crash.

Affected Systems

All current Linux kernel versions that include the io_ti driver before the 183c1076… patch are affected; the flaw is present in the generic Linux kernel regardless of distribution.

Risk and Exploitability

No CVSS or EPSS score is publicly available and the vulnerability is not listed in KEV, but the heap corruption represents a high‑severity flaw that can be exploited by physically connecting a malicious USB device, giving an attacker the opportunity for privilege escalation or denial of service.

Generated by OpenCVE AI on June 25, 2026 at 10:54 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply a Linux kernel update that fixes the io_ti driver bug.
  • Disable the io_ti USB serial driver on systems that do not require it to eliminate the vulnerable code path.
  • Use udev rules or USB lockdown to block untrusted USB devices from being enumerated as serial devices until a patched kernel is installed.

Generated by OpenCVE AI on June 25, 2026 at 10:54 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 25 Jun 2026 11:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122
CWE-20

Thu, 25 Jun 2026 09:15:00 +0000

Type Values Removed Values Added
Description 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 ]
Title USB: serial: io_ti: fix heap overflow in get_manuf_info()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-25T08:39:06.330Z

Reserved: 2026-06-09T07:44:35.391Z

Link: CVE-2026-53196

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-25T11:00:11Z

Weaknesses
  • CWE-122

    Heap-based Buffer Overflow

  • CWE-20

    Improper Input Validation