CVE-2026-98562
kernel: net: libwx: fix races in Tx timestamp handling
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 18, 2026
Updated · October 20, 2026
Description
A flaw was found in the Linux kernel's Wangxun network driver library (libwx). This vulnerability allows a local user to cause a Denial of Service (DoS) through memory corruption. A race condition in the Precision Time Protocol (PTP) transmit timestamp handling fails to properly synchronize packet transmission and cleanup routines. By transmitting network packets configured for hardware timestamping, an attacker can trigger this race condition, causing the system to access already freed memory and crash.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-366 · Race Condition within a Thread