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CVE-2026-53196

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

Description (CNA)

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 ]

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e168db91442b94e64fa82a7dd297983d48ea5cc0; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 561edb021486e6723d841926aa4b48097da06190; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before cfd634f6dfd40c49a84f9bddc2867a80e2e2623a; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d92f17af7097d10bdeddf26f66f34b354104b277; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b849f30d1a9e66aae6b715aaef66e427390cb081; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f96cf7bf9fbf15d7fcf0c91fec47ba8a010369ea; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d214d2341d4f9f447e36a7d012cdf6a6631a55f1; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 183c1076eca43bbb3e7bdf597456f91d81c73e74
Linux / Linuxaffected 2.6.12; unaffected 0 before 2.6.12; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.94 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

redhat-SADP

A flaw was found in the Linux kernel's `io_ti` USB serial driver. A malicious USB device, when plugged into a host running this driver, can exploit a heap overflow vulnerability in the `get_manuf_info()` function. This occurs because the driver does not properly validate the size of data read from the device's I2C EEPROM against the allocated memory buffer. This improper validation can lead to out-of-bounds memory writes, potentially allowing an attacker to execute arbitrary code or cause a system crash (Denial of Service).