--- title: NTFS3 Hardened In Linux 7.4 Against Corrupted Or... description: NTFS3, the in-kernel NTFS read/write driver from Paragon Software, gets hardening fixes for Linux 7.4. Fuzzing and Kernel Address Sanitizer (KASAN) reports led... canonical: https://daily.dev/posts/ntfs3-hardened-in-linux-7-4-against-corrupted-or-maliciously-crafted-ntfs-volumes-h4lapvqpb twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: NTFS3 Hardened In Linux 7.4 Against Corrupted Or Maliciously-Crafted NTFS Volumes | daily.dev og:description: NTFS3, the in-kernel NTFS read/write driver from Paragon Software, gets hardening fixes for Linux 7.4. Fuzzing and Kernel Address Sanitizer (KASAN) reports led... og:url: https://daily.dev/posts/ntfs3-hardened-in-linux-7-4-against-corrupted-or-maliciously-crafted-ntfs-volumes-h4lapvqpb og:image: https://api.daily.dev/og/posts/H4laPvqPB.png og:image:alt: NTFS3 Hardened In Linux 7.4 Against Corrupted Or Maliciously-Crafted NTFS Volumes 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. # NTFS3 Hardened In Linux 7.4 Against Corrupted Or Maliciously-Crafted NTFS Volumes **[Phoronix](https://daily.dev/sources/phoronix)** · 1 min read · 0 upvotes · 0 comments ## Summary NTFS3, the in-kernel NTFS read/write driver from Paragon Software, gets hardening fixes for Linux 7.4. Fuzzing and Kernel Address Sanitizer (KASAN) reports led to fixes for corrupted or maliciously-crafted NTFS volumes. Patches address a possible 64K kernel heap leak to user-space, a damaged compressed file returning uninitialized page cache contents, a heap overflow, and mount code writing past the MFT record buffer. A new 'ugm' mount option, enabled by default, skips WSL uid/gid/mode extended attributes when set to 0. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What security fixes are in the NTFS3 driver for Linux 7.4? Linux 7.4's NTFS3 driver fixes several memory-safety bugs found via fuzzing and Kernel Address Sanitizer (KASAN), including a possible 64K kernel heap leak to user-space, a damaged compressed file returning uninitialized page cache contents, a heap overflow, and mount code writing past the MFT record buffer. _Teams hardening Linux filesystem drivers can track NTFS3 patch notes like these on daily.dev._ ### What does the new ugm mount option do in the NTFS3 driver? The 'ugm' mount option, enabled by default in Linux 7.4's NTFS3 driver, controls WSL-specific extended attributes. Setting ugm=0 when mounting an NTFS partition means newly created files skip the WSL uid/gid/mode extended attributes that Windows itself doesn't use. _Developers configuring NTFS mounts across WSL and Linux can follow driver option changes like this on daily.dev._ ## Similar posts on daily.dev - [New NTFS Driver Sees Hardening & Fixes, Windows Native Symlinks With Linux 7.2](https://daily.dev/posts/new-ntfs-driver-sees-hardening-fixes-windows-native-symlinks-with-linux-7-2-c8jw6a9d7) · Phoronix · 1 upvotes · 0 comments - [NTFS3 Driver Sees Bug Fixes & Minor Improvements With Linux 7.2](https://daily.dev/posts/ntfs3-driver-sees-bug-fixes-minor-improvements-with-linux-7-2-boacjbkk2) · Phoronix · 0 upvotes · 0 comments - [NTFS-3G Update Brings Many Security Fixes](https://daily.dev/posts/ntfs-3g-update-brings-many-security-fixes-riwlbpbes) · Phoronix · 0 upvotes · 0 comments - [What is NTFSPlus and Why Does It Matter for Linux Users?](https://daily.dev/posts/what-is-ntfsplus-and-why-does-it-matter-for-linux-users--abhe55p2j) · It's Foss · 1 upvotes · 0 comments --- Tags: [#linux](https://daily.dev/tags/linux), [#filesystems](https://daily.dev/tags/filesystems) [View this post on daily.dev](https://daily.dev/posts/ntfs3-hardened-in-linux-7-4-against-corrupted-or-maliciously-crafted-ntfs-volumes-h4lapvqpb) ```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":"NTFS3 Hardened In Linux 7.4 Against Corrupted Or Maliciously-Crafted NTFS Volumes","url":"https://daily.dev/posts/ntfs3-hardened-in-linux-7-4-against-corrupted-or-maliciously-crafted-ntfs-volumes-h4lapvqpb","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/ntfs3-hardened-in-linux-7-4-against-corrupted-or-maliciously-crafted-ntfs-volumes-h4lapvqpb"},"datePublished":"2026-10-28T10:15:55.682Z","dateModified":"2026-10-28T10:17:14.773Z","description":"NTFS3, the in-kernel NTFS read/write driver from Paragon Software, gets hardening fixes for Linux 7.4. 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