CVE-2026-53194

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: USB: serial: kl5kusb105: fix bulk-out buffer overflow klsi_105_prepare_write_buffer() is called by the generic write path with the bulk-out buffer and its size (bulk_out_size, 64 bytes). It stores a two-byte length header at the start of the buffer and copies the payload from the write fifo starting at buf + KLSI_HDR_LEN, but passes the full buffer size as the number of bytes to copy: count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN, size, &port->lock); When the fifo holds at least size bytes, size bytes are c...

Affected product and versions

Product

Linux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6

Affected versions

>= 60b3013cdaf3fa8a17243ca46b19db3cbe08d943 < 60af1fd82983c26604102e63a3fcc822c186cceb, >= 60b3013cdaf3fa8a17243ca46b19db3cbe08d943 < 0a57320f71941d4e0b1307453c9a1f0939afe666, >= 60b3013cdaf3fa8a17243ca46b19db3cbe08d943 < 14147b7963685957839c76ba8094924e22777d79, >= 60b3013cdaf3fa8a17243ca46b19db3cbe08d943 < a1288cd700f721c1a119c4f1e8efa234e59caada, >= 60b3013cdaf3fa8a17243ca46b19db3cbe08d943 < 70d86e355c564b5510fde61361df014f5476c83e, >= 60b3013cdaf3fa8a17243ca46b19db3cbe08d943 < 372f33ebed747d91870f57c0a2e62884a870bffa, >= 60b3013cdaf3fa8a17243ca46b19db3cbe08d943 < bde742b076cbe26ecc89c8c68c76ae076a524d02, >= 60b3013cdaf3fa8a17243ca46b19db3cbe08d943 < 96d47e40bf9db4a9efd5c8fb53287a508d165f14, >= 2.6.35, >= 2.6.35 < 5.10.259, >= 5.11 < 5.15.210, >= 5.16 < 6.1.176, >= 6.2 < 6.6.143, >= 6.7 < 6.12.94, >= 6.13 < 6.18.36, >= 6.19 < 7.0.13, 7.1

Fixed versions

5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.94, 6.18.36, 7.0.13

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-787