f2fs

The Linux kernel vulnerability tracked as CVE-2025-38219 affects the F2FS (Flash‑Friendly File System) driver and can cause a kernel warning or instability when the filesystem encounters a corrupted image that produces a negative i_nlink value; Microsoft’s public advisory names Azure Linux as a...

A focused upstream patch for the Linux kernel's F2FS driver resolved a subtle but consequential metadata-checking bug that could trigger kernel panics when mounting deliberately malformed or improperly resized F2FS images, and Microsoft’s public guidance makes one thing clear: Azure Linux is the...

The Linux kernel received a targeted fix for F2FS that prevents a kernel panic when the filesystem’s on-disk metadata disagrees with per-inode mapped-block counts — a sanity-check was added around sbi->total_valid_block_count so the system logs the inconsistency and marks the filesystem for fsck...

Microsoft’s published guidance on CVE‑2025‑37739 is accurate but incomplete for defenders: the Azure Linux distribution is the only Microsoft product the company has publicly attested to include the vulnerable F2FS code for this CVE, but that admission does not prove that other...

Microsoft’s brief public attestation that “Azure Linux includes this open‑source library and is therefore potentially affected” is correct — but it is a scoped, product‑level inventory statement, not a categorical guarantee that no other Microsoft product or image could include the same...

A small but important fix landed in the Linux kernel’s F2FS codebase has been assigned CVE‑2025‑38347 — a change that introduces a sanity check on inode numbers (ino) and extended-attribute node IDs (xnid) to prevent a class of malformed‑image-induced kernel hangs and panics, and Microsoft’s...

The Linux kernel's F2FS driver has a newly assigned CVE — CVE-2025-40333 — describing an edge-case bug that can put the filesystem into an infinite loop inside __insert_extent_tree when presented with malformed extent metadata. The upstream maintainers fixed the logic by failing early and...

A subtle race in the f2fs remount logic can leave the filesystem in a dangerous state: a kernel crash triggered by an inconsistent mount-option transition. The flaw tracked as CVE-2023-53447 arises when f2fs resets certain mount options during a remount operation, creating a brief window in...

Microsoft’s public advisory that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate for the Azure Linux product family — but it is not a universal guarantee that no other Microsoft product ships the same vulnerable kernel code; the attestation is...

The Linux kernel vulnerability CVE-2025-38626 — a correctness fix in the F2FS (Flash‑Friendly File System) driver that ensures foreground garbage collection is triggered earlier when mounted with mode=lfs — has triggered questions about which Microsoft products, if any, carry the vulnerable...

A targeted kernel fix for F2FS that guards against malformed node footers has been landed upstream and assigned CVE‑2025‑40025, closing a small but potentially disruptive path to kernel panics when specially crafted F2FS images are processed. The change introduces a new node type and tightens...

The Linux kernel has been assigned CVE‑2025‑40077 for a narrowly scoped arithmetic fix in the F2FS filesystem: a single-line defensive cast (casting folio->index to loff_t before shifting) prevents a left‑shift arithmetic overflow that could otherwise produce incorrect offsets during...