CVE-2026-53196

/// Technical 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 ]

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References