Apple, as it always does, has posted the security details of its Watch OS 1.0.1 update. If you thought this update was minor, thanks to Apple's typical low-key description, take a look at the details. Then update right away.

APPLE-SA-2015-05-19-1 Watch OS 1.0.1 Watch OS 1.0.1 is now available and addresses the following: Certificate Trust Policy Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: Update to the certificate trust policy Description: The certificate trust policy was updated. The complete list of certificates may be viewed at https://support.apple.com/kb/204873 FontParser Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: Processing a maliciously crafted font file may lead to arbitrary code execution Description: A memory corruption issue existed in the processing of font files. This issue was addressed through improved bounds checking. CVE-ID CVE-2015-1093 : Marc Schoenefeld Foundation Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: An application using NSXMLParser may be misused to disclose information Description: An XML External Entity issue existed in NSXMLParser's handling of XML. This issue was addressed by not loading external entities across origins. CVE-ID CVE-2015-1092 : Ikuya Fukumoto IOHIDFamily Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: A malicious application may be able to determine kernel memory layout Description: An issue existed in IOHIDFamily that led to the disclosure of kernel memory content. This issue was addressed through improved bounds checking. CVE-ID CVE-2015-1096 : Ilja van Sprundel of IOActive IOAcceleratorFamily Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: A malicious application may be able to determine kernel memory layout Description: An issue existed in IOAcceleratorFamily that led to the disclosure of kernel memory content. This issue was addressed by removing unneeded code. CVE-ID CVE-2015-1094 : Cererdlong of Alibaba Mobile Security Team Kernel Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: A malicious application may be able to cause a system denial of service Description: A race condition existed in the kernel's setreuid system call. This issue was addressed through improved state management. CVE-ID CVE-2015-1099 : Mark Mentovai of Google Inc. Kernel Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: An attacker with a privileged network position may be able to redirect user traffic to arbitrary hosts Description: ICMP redirects were enabled by default. This issue was addressed by disabling ICMP redirects. CVE-ID CVE-2015-1103 : Zimperium Mobile Security Labs Kernel Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: A remote attacker may be able to cause a denial of service Description: A state inconsistency issue existed in the handling of TCP out of band data. This issue was addressed through improved state management. CVE-ID CVE-2015-1105 : Kenton Varda of Sandstorm.io Kernel Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: A malicious application may escalate privileges using a compromised service intended to run with reduced privileges Description: setreuid and setregid system calls failed to drop privileges permanently. This issue was addressed by correctly dropping privileges. CVE-ID CVE-2015-1117 : Mark Mentovai of Google Inc. Kernel Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: A remote attacker may be able to bypass network filters Description: The system would treat some IPv6 packets from remote network interfaces as local packets. The issue was addressed by rejecting these packets. CVE-ID CVE-2015-1104 : Stephen Roettger of the Google Security Team Kernel Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: An attacker with a privileged network position may be able to cause a denial of service Description: A state inconsistency existed in the processing of TCP headers. This issue was addressed through improved state handling. CVE-ID CVE-2015-1102 : Andrey Khudyakov and Maxim Zhuravlev of Kaspersky Lab Kernel Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: A malicious application may be able to cause unexpected system termination or read kernel memory Description: An out of bounds memory access issue existed in the kernel. This issue was addressed through improved memory handling. CVE-ID CVE-2015-1100 : Maxime Villard of m00nbsd Kernel Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: A malicious application may be able to execute arbitrary code with system privileges Description: A memory corruption issue existed in the kernel. This issue was addressed through improved memory handling. CVE-ID CVE-2015-1101 : [email protected] working with HP's Zero Day Initiative Secure Transport Available for: Apple Watch Sport, Apple Watch, and Apple Watch Edition Impact: An attacker with a privileged network position may intercept SSL/TLS connections Description: Secure Transport accepted short ephemeral RSA keys, usually used only in export-strength RSA cipher suites, on connections using full-strength RSA cipher suites. This issue, also known as FREAK, only affected connections to servers which support export-strength RSA cipher suites, and was addressed by removing support for ephemeral RSA keys. CVE-ID CVE-2015-1067 : Benjamin Beurdouche, Karthikeyan Bhargavan, Antoine Delignat-Lavaud, Alfredo Pironti, and Jean Karim Zinzindohoue of Prosecco at Inria Paris

Apple's note continues: "Information will also be posted to the Apple Security Updates web site: https://support.apple.com/kb/HT201222