In FreeBSD before 11.2-STABLE(r338986), 11.2-RELEASE-p4, 11.1-RELEASE-p15, 10.4-STABLE(r338985), and 10.4-RELEASE-p13, due to improper maintenance of IPv6 protocol control block flags through various failure paths, an unprivileged authenticated local user may be able to cause a NULL pointer dereference causing the kernel to crash.

NVIDIA GPU Display Driver contains a vulnerability in the DirectX and OpenGL Usermode drivers where a specially crafted pixel shader can cause infinite recursion leading to denial of service.

The debugging feature in the kernel in Apple OS X before 10.11 mismanages state, which allows local users to cause a denial of service via unspecified vectors.

The IOKit implementation in the kernel in Apple iOS before 7.1.2 and Apple TV before 6.1.2, and in IOReporting in Apple OS X before 10.9.4, allows local users to cause a denial of service (NULL pointer dereference and reboot) via crafted API arguments.

Integer signedness error in the kernel in Apple Mac OS X before 10.9 allows local users to cause a denial of service (system crash) via a crafted tty read operation.

Trend Micro's Virus Scan API (VSAPI) and Advanced Threat Scan Engine (ATSE) - are vulnerable to a memory exhaustion vulnerability that may lead to denial-of-service or system freeze if exploited by an attacker using a specially crafted file.

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 14.4 and iPadOS 14.4. An attacker in a privileged position may be able to perform a denial of service attack.

A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected device. To exploit this vulnerability, the attacker would need to have valid credentials on the device. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending one or more crafted IPC messages to the AnyConnect process on an affected device. A successful exploit could allow the attacker to stop the AnyConnect process, causing a DoS condition on the device. Note: The process under attack will automatically restart so no action is needed by the user or admin.

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Catalina 10.15.5. Inserting a USB device that sends invalid messages may cause a kernel panic.

In 11.4-PRERELEASE before r360733 and 11.3-RELEASE before p13, improper mbuf handling in the kernel causes a use-after-free bug by sending IPv6 Hop-by-Hop options over the loopback interface. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.