--- title: Linux isn't immune | daily.dev description: Meltdown and Spectre hardware vulnerabilities represent an unprecedented challenge for the Linux kernel community. The Meltdown mitigation arrived as kernel... canonical: https://daily.dev/posts/linux-isn-t-immune-gfwfa4evb twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Linux isn't immune | daily.dev og:description: Meltdown and Spectre hardware vulnerabilities represent an unprecedented challenge for the Linux kernel community. The Meltdown mitigation arrived as kernel... og:url: https://daily.dev/posts/linux-isn-t-immune-gfwfa4evb og:image: https://api.daily.dev/og/posts/gFwFa4Evb.png og:image:alt: Linux isn't immune og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Linux isn't immune **[Collabora Blog](https://daily.dev/sources/collabora)** · 2 min read · 0 upvotes · 0 comments ## Summary Meltdown and Spectre hardware vulnerabilities represent an unprecedented challenge for the Linux kernel community. The Meltdown mitigation arrived as kernel page-table isolation (KPTI), merged in Linux 4.15-rc6, which separates kernel and userspace page tables. Spectre remains harder to fully resolve, with only initial mitigations available. The piece argues that too many vendors fail to keep their kernels patched and that tracking mainline Linux closely is now more critical than ever. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How did the Linux kernel mitigate the Meltdown vulnerability? The Linux kernel mitigated Meltdown through kernel page-table isolation (KPTI), a fundamental change to kernel memory management that isolates the kernel page table from the userspace page table. This patch set was merged in Linux 4.15-rc6. Spectre, by contrast, is harder to fix — initial mitigations exist but more efficient solutions were still being developed at the time. _Kernel developers tracking Linux security patches follow new KPTI and Spectre developments on daily.dev._ ## Similar posts on daily.dev - [Newer RISC-V CPUs Vulnerable To Spectre V1 - Linux Mitigation Patches Posted](https://daily.dev/posts/newer-risc-v-cpus-vulnerable-to-spectre-v1---linux-mitigation-patches-posted-w75vepfxx) · Phoronix · 0 upvotes · 0 comments - [The Hidden Kernel Problem at the Heart of Cloud Native Security](https://daily.dev/posts/the-hidden-kernel-problem-at-the-heart-of-cloud-native-security-dzbrqdvdy) · The New Stack · 0 upvotes · 0 comments - [Eight stable kernels with fix for a single vulnerability](https://daily.dev/posts/eight-stable-kernels-with-fix-for-a-single-vulnerability-fwk63qgar) · LWN.net · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#linux](https://daily.dev/tags/linux) [View this post on daily.dev](https://daily.dev/posts/linux-isn-t-immune-gfwfa4evb) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Linux isn't immune","url":"https://daily.dev/posts/linux-isn-t-immune-gfwfa4evb","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/linux-isn-t-immune-gfwfa4evb"},"datePublished":"2026-08-11T08:55:26.049Z","dateModified":"2026-08-11T09:24:30.577Z","description":"Meltdown and Spectre hardware vulnerabilities represent an unprecedented challenge for the Linux kernel community. 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This patch set was merged in Linux 4.15-rc6. Spectre, by contrast, is harder to fix — initial mitigations exist but more efficient solutions were still being developed at the time. Kernel developers tracking Linux security patches follow new KPTI and Spectre developments on daily.dev."}}]} ```