--- title: Linux 7.3 Cleans Up Stack Randomization, Ensures It... description: Intel's Thomas Gleixner led a rework of Linux kernel stack randomization code, consolidating architecture-specific implementations (PowerPC, LoongArch, RISC-V,... canonical: https://daily.dev/posts/linux-7-3-cleans-up-stack-randomization-ensures-it-happen-as-early-as-possible-h6ox39zcm twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Linux 7.3 Cleans Up Stack Randomization, Ensures It Happen As Early As Possible | daily.dev og:description: Intel's Thomas Gleixner led a rework of Linux kernel stack randomization code, consolidating architecture-specific implementations (PowerPC, LoongArch, RISC-V,... og:url: https://daily.dev/posts/linux-7-3-cleans-up-stack-randomization-ensures-it-happen-as-early-as-possible-h6ox39zcm og:image: https://api.daily.dev/og/posts/H6Ox39zcm.png og:image:alt: Linux 7.3 Cleans Up Stack Randomization, Ensures It Happen As Early As Possible 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 7.3 Cleans Up Stack Randomization, Ensures It Happen As Early As Possible **[Phoronix](https://daily.dev/sources/phoronix)** · 2 min read · 0 upvotes · 0 comments ## Summary Intel's Thomas Gleixner led a rework of Linux kernel stack randomization code, consolidating architecture-specific implementations (PowerPC, LoongArch, RISC-V, s390, x86/x86_64) into the generic entry code. The change ensures randomization happens as early as possible right after establishing state, fixing prior violations of non-instrumentable code constraints. The same pull request also adds a CONFIG_SYSCALL_USER_DISPATCH Kconfig option and a kernel.syscall_user_dispatch runtime control to make Syscall User Dispatch (SUD) more configurable, including disabling it for security reasons. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What changed in Linux kernel stack randomization for version 7.3? Linux 7.3 consolidates stack randomization code that was previously scattered across architecture-specific low-level entry code into the generic entry code helpers. Thomas Gleixner of Intel led the rework covering PowerPC, LoongArch, RISC-V, s390, and x86/x86_64, ensuring randomization now happens at the earliest possible point right after establishing state, fixing prior violations of non-instrumentable code constraints. _Kernel engineers tracking security-hardening changes like this follow low-level Linux updates on daily.dev._ ### How do I disable Syscall User Dispatch in the Linux kernel? Syscall User Dispatch (SUD) can now be disabled at build-time using the new CONFIG_SYSCALL_USER_DISPATCH Kconfig option introduced in the Linux 7.3 kernel pull request, or controlled at run-time via the kernel.syscall_user_dispatch parameter. This makes SUD more configurable for those wanting to turn it off for security reasons. _Anyone tuning kernel security options can keep tabs on syscall dispatch controls via daily.dev._ ## Similar posts on daily.dev - [Reworked System Call Entry Handling Slated For Linux 7.3](https://daily.dev/posts/reworked-system-call-entry-handling-slated-for-linux-7-3-du1elv5ms) · Phoronix · 0 upvotes · 0 comments - [Linux 7.3 To Make It Easier To Disable Syscall User Dispatch](https://daily.dev/posts/linux-7-3-to-make-it-easier-to-disable-syscall-user-dispatch-onlvu0ecc) · Phoronix · 0 upvotes · 0 comments - [Main changes, Arm, RISC-V, and MIPS architectures](https://daily.dev/posts/main-changes-arm-risc-v-and-mips-architectures-eds3j61xx) · CNX Software · 0 upvotes · 0 comments - [Linux Lands Safeguard For RISC-V Against Another Microarchitectural Attack Vector](https://daily.dev/posts/linux-lands-safeguard-for-risc-v-against-another-microarchitectural-attack-vector-ijnx4p4vv) · Phoronix · 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-7-3-cleans-up-stack-randomization-ensures-it-happen-as-early-as-possible-h6ox39zcm) ```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 7.3 Cleans Up Stack Randomization, Ensures It Happen As Early As Possible","url":"https://daily.dev/posts/linux-7-3-cleans-up-stack-randomization-ensures-it-happen-as-early-as-possible-h6ox39zcm","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/linux-7-3-cleans-up-stack-randomization-ensures-it-happen-as-early-as-possible-h6ox39zcm"},"datePublished":"2026-08-21T12:39:24.173Z","dateModified":"2026-08-21T18:01:10.132Z","description":"Intel's Thomas Gleixner led a rework of Linux kernel stack randomization code, consolidating architecture-specific implementations (PowerPC, LoongArch, RISC-V,...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/0c79d473bddcffba924a4010852b9e29?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/0c79d473bddcffba924a4010852b9e29?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Phoronix","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Phoronix","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/6a26ba379dd64932830aa0c9803dd7ee","url":"https://daily.dev/sources/phoronix"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/linux-7-3-cleans-up-stack-randomization-ensures-it-happen-as-early-as-possible-h6ox39zcm","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"security,linux","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Phoronix","item":"https://daily.dev/sources/phoronix"},{"@type":"ListItem","position":3,"name":"Linux 7.3 Cleans Up Stack Randomization, Ensures It Happen As Early As Possible"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/linux-7-3-cleans-up-stack-randomization-ensures-it-happen-as-early-as-possible-h6ox39zcm#faq","mainEntity":[{"@type":"Question","name":"What changed in Linux kernel stack randomization for version 7.3?","acceptedAnswer":{"@type":"Answer","text":"Linux 7.3 consolidates stack randomization code that was previously scattered across architecture-specific low-level entry code into the generic entry code helpers. 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