{"id":40620,"date":"2026-08-24T19:21:53","date_gmt":"2026-08-24T13:51:53","guid":{"rendered":"https:\/\/www.systweak.com\/blogs\/?p=40620"},"modified":"2026-08-24T19:54:33","modified_gmt":"2026-08-24T14:24:33","slug":"chromeos-151-features-security-fixes","status":"publish","type":"post","link":"https:\/\/www.systweak.com\/blogs\/chromeos-151-features-security-fixes\/","title":{"rendered":"ChromeOS 151 Is Here: New Features, 18 Security Fixes, and Everything to Know"},"content":{"rendered":"<p ><span style=\"font-weight: 400\">ChromeOS 151 is rolling out now to Chromebooks and ChromeOS Flex devices on the Stable channel. This release has many visual updates as well as some of the most heavy-hitting security related updates we&#8217;ve seen in awhile along with several user-friendly updates that will make using your device easier. Here is a full rundown of ChromeOS 151 features, what this ChromeOS update means for your device, and whether you need to do anything about it.<\/span><\/p>\n<p ><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-40621\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2026\/08\/chrome-os.webp\" alt=\"chrome os\" width=\"702\" height=\"393\" sizes=\"(max-width: 702px) 100vw, 702px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h2 >What&#8217;s New in ChromeOS 151<\/h2>\n<p ><b>Smart bookmark bar auto-hide<\/b><span style=\"font-weight: 400\">. Under Settings, then Appearance, you will now find explicit controls for bookmark bar visibility. If Chrome notices you are not regularly interacting with the bookmark bar on the New Tab page, it can automatically hide it to keep your browsing space cleaner.<\/span><\/p>\n<p ><b>Gemini Safe Browsing.<\/b><span style=\"font-weight: 400\"> Real-time Safe Browsing protection now extends specifically to Gemini interactions, adding a layer of protection to Google&#8217;s AI assistant that previously applied mainly to regular browsing.<\/span><\/p>\n<p ><b>Chrome Kiosks App cutoffs<\/b><span style=\"font-weight: 400\">. The Chrome Apps in Kiosk Mode will be discontinued; a change that mainly affects schools and businesses running dedicated single purpose Chromebook setups.<\/span><\/p>\n<p ><b>ChromeOS 151 Security Fixes: 18 Vulnerabilities Patched<\/b><\/p>\n<p ><span style=\"font-weight: 400\">This ChromeOS 151 security update resolves 18 CVE tracked vulnerabilities across core system components, grouped here by the part of the system each one touches:<\/span><\/p>\n<ul >\n<li style=\"font-weight: 400\" aria-level=\"1\"><b>Mojo and window management:<\/b><span style=\"font-weight: 400\"> A critical integer overflow in Mojo and a use-after-free vulnerability in the Aura window manager.<\/span><\/li>\n<li style=\"font-weight: 400\" aria-level=\"1\"><b>DOM and WebGL: <\/b><span style=\"font-weight: 400\">There are multiple &#8220;use after free&#8221; vulnerabilities and multiple data validation issues with DOM, plus an improper implementation issue in WebGL.<\/span><\/li>\n<li style=\"font-weight: 400\" aria-level=\"1\"><b>File system and input handling: <\/b><span style=\"font-weight: 400\">Insufficient policy enforcement in the File System Access API and a use-after-free bug in input handling.<\/span><\/li>\n<li style=\"font-weight: 400\" aria-level=\"1\"><b>Credentials and authentication:<\/b><span style=\"font-weight: 400\"> Password data validation bugs and a Web Authentication use-after-free flaw.<\/span><\/li>\n<li style=\"font-weight: 400\" aria-level=\"1\"><b>Payments, resources, extensions, and web workers:<\/b><span style=\"font-weight: 400\"> Additional fixes spanning the payments system, resource handling, the extensions platform, and web workers.<\/span><\/li>\n<\/ul>\n<p ><span style=\"font-weight: 400\">Although Google has not indicated in their release notes that there is currently active exploitation on any of these vulnerabilities, the sheer volume, 18 separate CVEs in one release, makes this update worth installing promptly rather than postponing.<\/span><\/p>\n<h3 >Hardware and Enterprise Changes<\/h3>\n<p ><span style=\"font-weight: 400\">ChromeOS 151 sets new hardware cutoffs specifically for ChromeOS Flex, the version of ChromeOS built to run on ordinary PCs and Macs. Any device that is utilizing an older Graphics Processing Unit (GPU), including Intel and AMD GPU&#8217;s prior to 2010 as well as all Nvidia GPUs prior to 2014 will receive no further update releases and be frozen to the previous stable release of Chrome OS (ChromeOS 150) after ChromeOS 151 is released.<\/span><\/p>\n<p ><span style=\"font-weight: 400\">On the enterprise side, the URLBlocklist policy now applies fully inside Incognito windows, closing a loophole where allowlist settings could previously bypass restrictions in private browsing sessions; this change is aimed for school IT and enterprise device management.<\/span><\/p>\n<h3 >Will Every Chromebook Get This Update?<\/h3>\n<p ><span style=\"font-weight: 400\">Not immediately, and not always the same version. Chrome, and by extension ChromeOS, ships on a staged rollout that reaches devices gradually over days to weeks rather than all at once. Beyond that, many schools and enterprises have their Chromebooks locked into the separate Long Term Support (LTS) channel as opposed to the regular release cycle. The current primary LTS branch is set to remain anchored on an earlier milestone until October 6, 2026. If your Chromebook is managed by a school or workplace, it may not receive ChromeOS 151 at all until that LTS window changes, regardless of how long you wait.<\/span><\/p>\n<h3 >How to Check for the ChromeOS 151 Update<\/h3>\n<p ><span style=\"font-weight: 400\">1. Open your Chromebook&#8217;s Settings.<\/span><span style=\"font-weight: 400\"><br \/>\n<\/span><span style=\"font-weight: 400\">2. Select About ChromeOS from the bottom left menu.<\/span><span style=\"font-weight: 400\"><br \/>\n<\/span><span style=\"font-weight: 400\">3. Under this screen click check for updates.<\/span><span style=\"font-weight: 400\"><br \/>\n<\/span><span style=\"font-weight: 400\">4. If ChromeOS 151 is available for your device, it will begin downloading automatically.<\/span><\/p>\n<p><span style=\"font-weight: 400\"><h2>Frequently Asked Questions<\/h2>\n<div class=\"accordion_sec faq-section\">\n<div id=\"accordion-menu\"><\/span><\/p>\n<p><span style=\"font-weight: 400\"><\/p>\n<h3 class=\"accordion-header plus\">Is ChromeOS 151 the same update as Chrome 151 on Windows or Mac?<\/h3>\n<div class=\"accordion-panel\">\n<p class=\"accordion-content aio-answer-block\">They share the same underlying Chrome version and most of the same security fixes, since ChromeOS is built around the Chrome browser engine. However, ChromeOS 151 also includes platform-specific changes, including the Kiosk app cutoffs and Flex hardware requirements that do not apply to desktop Chrome on Windows or Mac.<\/p>\n<\/div>\n<p><\/span><\/p>\n<p><span style=\"font-weight: 400\"><\/p>\n<h3 class=\"accordion-header plus\">Why hasn't my Chromebook received ChromeOS 151 yet?<\/h3>\n<div class=\"accordion-panel\">\n<p class=\"accordion-content aio-answer-block\">Chrome updates roll out in stages over days to weeks rather than to every device at once, so your Chromebook may simply not have reached its turn yet. If your device is managed by a school or employer, then they could be utilizing a long-term support channel which has a completely separate, slower update schedule entirely.<\/p>\n<\/div>\n<p><\/span><\/p>\n<p><span style=\"font-weight: 400\"><\/p>\n<h3 class=\"accordion-header plus\">What is Gemini Safe Browsing?<\/h3>\n<div class=\"accordion-panel\">\n<p class=\"accordion-content aio-answer-block\">Gemini Safe Browsing adds an additional layer of security to protect users in their interactions with the Gemini AI Assistant by extending Google\u2019s real time Safe Browsing Protection, adding a security layer that previously applied mainly to general web browsing rather than AI features.<\/p>\n<\/div>\n<p><\/span><\/p>\n<p><span style=\"font-weight: 400\"><\/p>\n<h3 class=\"accordion-header plus\">My ChromeOS Flex device stopped receiving updates. Why?<\/h3>\n<div class=\"accordion-panel\">\n<p class=\"accordion-content aio-answer-block\">ChromeOS 151 introduces hardware cutoffs for older graphics processors, all devices with Intel\/AMD GPUs produced prior to 2010, and NVIDIA GPUs prior to 2014, will be restricted from receiving further software updates. If your Flex device falls into that category, it will remain on ChromeOS 150 permanently rather than continuing to receive future updates.<\/p>\n<\/div>\n<p><\/span><\/p>\n<p><span style=\"font-weight: 400\"><\/p>\n<h3 class=\"accordion-header plus\">Do I need to do anything to install ChromeOS 151?<\/h3>\n<div class=\"accordion-panel\">\n<p class=\"accordion-content aio-answer-block\">In most cases, no. This Chromebook update installs automatically once it reaches your device, though you can manually check for it under Settings >About Chrome OS tab and then click on Check for Updates if you want to confirm your current status.<\/p>\n<\/div>\n<p><\/span><\/p>\n<p><span style=\"font-weight: 400\"><\/p>\n<h3 class=\"accordion-header plus\">Are any of the 18 patched vulnerabilities being actively exploited?<\/h3>\n<div class=\"accordion-panel\">\n<p class=\"accordion-content aio-answer-block\">Google's release notes do not show active exploitation for any of the 18 CVEs they have resolved with this release. That said, the volume of fixes is still a reasonable prompt to update sooner rather than later, since a lack of confirmed exploitation is not the same as zero risk.<\/p>\n<\/div>\n<p><\/span><\/p>\n<p><span style=\"font-weight: 400\"><\/div>\n<\/div>\n<\/span><\/p>\n<h3 >The Bottom Line<\/h3>\n<p ><span style=\"font-weight: 400\">ChromeOS 151, the ChromeOS latest version rolling out now, pairs a couple of small, welcome interface changes with a genuinely heavy security update, 18 vulnerabilities patched in a single release, plus meaningful hardware and enterprise policy changes underneath. Because rollout is staged, and managed devices on the Long-Term Support channel may not see it for a while yet. So if you want to find out right away how far into the process your particular device is, check Settings&gt;About ChromeOS.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ChromeOS 151 is rolling out now to Chromebooks and ChromeOS Flex devices on the Stable channel. This release has many visual updates as well as some of the most heavy-hitting security related updates we&#8217;ve seen in awhile along with several user-friendly updates that will make using your device easier. Here is a full rundown of&hellip; <a class=\"more-link\" href=\"https:\/\/www.systweak.com\/blogs\/chromeos-151-features-security-fixes\/\">Continue reading <span class=\"screen-reader-text\">ChromeOS 151 Is Here: New Features, 18 Security Fixes, and Everything to Know<\/span><\/a><\/p>\n","protected":false},"author":27,"featured_media":40626,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[126],"tags":[],"class_list":["post-40620","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-browser","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1-RC3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ChromeOS 151: New Features and Security Fixes<\/title>\n<meta name=\"description\" content=\"ChromeOS 151 is rolling out now with 18 security fixes and a handful of quality-of-life changes. 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