Certighost-CVE-2026-54121

Document Type: Detection Use Case Related CVE: CVE-2026-54121 Certighost Author: Youssef Benchater Detection Use Case: Certighost CVE-2026-54121 This document describes the Splunk detection built for CVE-2026-54121. It follows the standard detection use case format so it can sit in a detection...

pico-usb-wifi

= pico-usb-wifi :toc: macro :toclevels: 3 :idprefix: :idseparator: - pico-usb-wifi is firmware for the Raspberry Pi Pico W that turns it into a driverless USB Wi-Fi adapter, enumerating as a USB CDC-NCM device. :figure-caption: AI Slop .pico-usb-wifi Diagram...

CVE-2026-98773

A flaw was found in the Linux kernel's CDC ACM Communications Device Class Abstract Control Model USB driver. A timing race condition during device disconnection and port closure can lead to a use-after-free vulnerability when communication requests attempt to access already freed memory buffers....

UBUNTU-CVE-2026-98773

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

CVE-2026-98773

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

SUSE CVE-2026-98773

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

AZL-108779 CVE-2026-98773 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

DEBIAN-CVE-2026-98773

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

CVE-2026-98773

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

CVE-2026-98773 USB: cdc-acm: skip URB restart in port_shutdown if disconnected

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

CVE-2026-98773

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

EUVD-2026-103858

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

CVE-2026-98773 USB: cdc-acm: skip URB restart in port_shutdown if disconnected

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

CVE-2026-98773

The Linux kernel contains a vulnerability in the cdc-acm driver where acm_port_shutdown() unconditionally calls acm_unpoison_urbs(). When the ALWAYS_POLL_CTRL quirk is active, this causes the re-submission of control and read URBs even if the device is being disconnected. Because acm_disconnect()...

Linux Distros Unpatched Vulnerability : CVE-2026-98773

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port...

PT-2026-116992

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in port shutdown if disconnected acm port shutdown is called from the tty-port machinery whenever the last user closes the port. acm disconnect sets acm-disconnected and calls tty port tty vhangup,...

CVE-2026-98773: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: USB: cdc-acm: skip URB restart in portshutdown if disconnected acmportshutdown is called from the tty-port machinery whenever the last user closes the port. acmdisconnect sets acm-disconnected and calls ttyportttyvhangup, which...

Linux Kernel Security Vulnerabilities

The Linux kernel has a security vulnerability. This vulnerability arises from the USB cdc-acm driver not checking the disconnection status when ports are closed. As a result, the control URB and read URB are still re-submitted. This causes a competition with the concurrent disconnection process,...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: usb: cdc-acm: Check the control transfer buffer size before accessing it. If the first fragment is shorter than struct usbcdcnotification, we cannot calculate the expectedsize. Instead, log an error and discard the notification...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: USB: class: cdc-wdm: Fixed the CPU lockup caused by excessive log messages. The syzbot fuzzer found that the interrupt-URB completion callback in the cdc-wdm driver took too long. The driver’s immediate resubmission of interrupts...