Heap-based buffer overflow in Linux kernel - CVE-2026-53196
Published: June 26, 2026
Vulnerability identifier: #VU135582
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-53196
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows an attacker with physical access to cause a denial of service or execute arbitrary code.
The vulnerability exists due to a heap-based buffer overflow in get_manuf_info() in the io_ti USB serial driver when processing a crafted USB device EEPROM descriptor. An attacker with physical access can connect a malicious USB device with a forged Size field to trigger the overflow and cause a denial of service or execute arbitrary code.
The out-of-bounds access is compounded because a checksum routine also iterates over the device-controlled length after the EEPROM data is read.
How to mitigate CVE-2026-53196
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/183c1076eca43bbb3e7bdf597456f91d81c73e74
- https://git.kernel.org/stable/c/561edb021486e6723d841926aa4b48097da06190
- https://git.kernel.org/stable/c/b849f30d1a9e66aae6b715aaef66e427390cb081
- https://git.kernel.org/stable/c/cfd634f6dfd40c49a84f9bddc2867a80e2e2623a
- https://git.kernel.org/stable/c/d214d2341d4f9f447e36a7d012cdf6a6631a55f1
- https://git.kernel.org/stable/c/d92f17af7097d10bdeddf26f66f34b354104b277
- https://git.kernel.org/stable/c/e168db91442b94e64fa82a7dd297983d48ea5cc0
- https://git.kernel.org/stable/c/f96cf7bf9fbf15d7fcf0c91fec47ba8a010369ea