CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 7.1. It affects Linux.
CVE
CVE-2026-43427
Severity
HIGH
CVSS
7.1
EPSS
0.13%
Linux
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: usb: class: cdc-wdm: fix reordering issue in read code path Quoting the bug report: Due to compiler optimization or CPU out-of-order execution, the desc->length update can be reordered before the memmove. If this happens, wdm_read() can see the new length and call copy_to_user() on uninitialized memory. This also violates LKMM data race rules [1]. Fix it by using WRITE_ONCE and memory barriers.
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