Zheng Zhang

**Name of the Vulnerable Software and Affected Versions** Linux Kernel (affected versions not specified) **Description** A denial of service issue was discovered due to a possible recursive locking scenario, resulting in a deadlock in the `table clear()` function in the drivers/md/dm-ioctl.c file of the Linux Kernel Device Mapper-Multipathing sub-component. This issue can be exploited to cause a denial of service. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** macOS versions prior to 12.0.1 macOS Big Sur versions prior to 11.6.2 macOS Catalina versions prior to Security Update 2021-008 **Description** A logic issue was addressed with improved validation. A malicious application may be able to disclose kernel memory. **Recommendations** For macOS versions prior to 12.0.1, update to macOS Monterey 12.0.1. For macOS Big Sur versions prior to 11.6.2, update to macOS Big Sur 11.6.2. For macOS Catalina versions prior to Security Update 2021-008, apply Security Update 2021-008.

**Name of the Vulnerable Software and Affected Versions** macOS versions prior to 12.1 macOS Big Sur versions prior to 11.6.2 macOS Catalina versions prior to Security Update 2021-008 **Description** A race condition issue was addressed with improved locking, which could allow a remote attacker to cause unexpected application termination or heap corruption. **Recommendations** For macOS versions prior to 12.1, update to macOS Monterey 12.1 or later. For macOS Big Sur versions prior to 11.6.2, update to macOS Big Sur 11.6.2 or later. For macOS Catalina versions prior to Security Update 2021-008, apply Security Update 2021-008 or later.

**Name of the Vulnerable Software and Affected Versions** macOS versions prior to 12.0.1 macOS Big Sur versions prior to 11.6.1 Security Update versions prior to 2021-007 Catalina **Description** A race condition was addressed with improved state handling, which may allow a malicious application to execute arbitrary code with kernel privileges. The issue is related to a Bluetooth component vulnerability in the macOS operating system, caused by concurrent execution using a shared resource with incorrect synchronization. **Recommendations** For macOS versions prior to 12.0.1, update to macOS Monterey 12.0.1 or later. For macOS Big Sur versions prior to 11.6.1, update to macOS Big Sur 11.6.1 or later. For Security Update versions prior to 2021-007 Catalina, apply Security Update 2021-007 Catalina or later.