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A vulnerability in the Linux kernel's f2fs filesystem caused fsck to incorrectly treat migrated node blocks as fsync-written data due to improper clearing of dentry and fsync marks during node block migration. This inconsistency could lead to filesystem corruption or denial of service. The issue has been fixed in updated Linux kernel versions.

CVE-2026-46175 addresses a flaw in the Linux kernel's f2fs filesystem where the garbage collection (FGGC) of node blocks did not clear dentry and fsync marks properly during migration. This caused the filesystem check utility (fsck) to misinterpret migrated node blocks as fsync-written data, leading to inconsistencies during filesystem checks. The patch moves the set/clear logic of these marks into __write_node_folio to ensure correctness. The vulnerability affects multiple linux-azure kernel versions prior to 7.0.0-28.28~24.04.1 and related versions. The fix is included in updated kernel packages as per Ubuntu advisories USN-8566-1 and USN-8568-1.

Detailed information about UBUNTU-CVE-2026-46175 affecting null linux-azure. Get real-time updates, technical details, and mitigation strategies.

UBUNTU-CVE-2026-46175 - Live Threat Intelligence - Threat Radar | OffSeq.com

Linux azure: In the Linux kernel, the following vulnerability has been resolved: f2fs: fix fsck inconsistency caused by FGGC of node block During FGGC node block… (CVE-2026-46175)

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

This vulnerability involves the f2fs filesystem's fsck process encountering inconsistencies due to the Fine-Grained Garbage Collection of node blocks. It affects Microsoft products such as Azure Linux 3.0. The technical details and impact specifics are limited, and no CVSS score or exploit information is available. No patch or official remediation guidance has been provided at this time.

Detailed information about f2fs: fix fsck inconsistency caused by FGGC of node block affecting Microsoft Security Response Center Microsoft. Get real-time updat

f2fs: fix fsck inconsistency caused by FGGC of node block - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-46175 f2fs: fix fsck inconsistency caused by FGGC of node block - VEX

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f2fs: fix fsck inconsistency caused by FGGC of node block


Linux azure: In the Linux kernel, the following vulnerability has been resolved: f2fs: fix fsck inconsistency caused by FGGC of node block During FGGC node block… (CVE-2026-46175)CVE-2026-46175 0 A vulnerability in the Linux kernel's f2fs filesystem caused fsck to incorrectly treat migrated node blocks as fsync-written data due to improper clearing of dentry and fsync marks during node block migration. This inconsistency could lead to filesystem corruption or denial of service. The issue has been fixed in updated Linux kernel versions. MediumVulnerability#gcve #osv #ubuntu-cve-2026-46175 Join the discussion	GCVE Database	05/28/2026, 10:16:00 UTC Added: 07/17/2026, 10:20:08 UTC
f2fs: fix fsck inconsistency caused by FGGC of node blockCVE-2026-46175 0 To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle UnknownVulnerability#gcve #csaf #cve-2026-46175 Join the discussion	GCVE Database	05/02/2026, 00:00:00 UTC Added: 05/29/2026, 21:02:08 UTC

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