btrfs_fixes

btrfsfixes: カスタム BTRFS リペアツール 12TB マルチデバイス BTRFS プールにおいて、ネイティブコマンド（btrfs check --repair、--init-extent-tree など）では修復できなかった深刻なエクステントツリーの破損を回復するために作成されたカスタムツールです。 構造化されたリカバリのケーススタディ、根本原因の分類、およびこれらのツールのほとんどを不要にするはずだった上流btrfs-progs の改善提案については、INCIDENT-ANALYSIS.md を参照してください。 これらのツールを使用するタイミング...

ffs

FFS - S Sistema de Archivos Esta es una herramienta CLI para buscar archivos como grep que no usa el kernel del sistema operativo para leer archivos, sino que lee tus discos directamente. Es prácticamente inútil, pero increíblemente genial. esto es solo 1.5k líneas de código C que: requiere sudo...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fix for the iteration of extrefs during log replay. When calling inodeaddref and processing extrefs, if we jump to the next label, the value of victimname.len is undefined. This occurs because victimname.len wasn’t...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed an issue where inode lists were leaked during backref walking in findparentnodes. During backref walking, when findparentnodes is called, if we are dealing with a data extent and an error occurs while resolving...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: btrfs: qgroup: Fixed a bug where sleep was performed from an invalid context in btrfsqgroupinherit. Syzkaller reported the bug as follows: Bug: A sleep function is called from an invalid context at include/linux/sched/mm.h:274 Ca...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Fixed a use-after-free in btrfsencodedreadendio. Shinichiro reported the following use-after-free that sometimes occurs in our CI system when running fstests' btrfs/284 on a TCMU runner device: BUG: KASAN:...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Fixed leaks in the ulist structure during error paths in the qgroup self tests. In the testnosharedqgroup and testmultiplerefs qgroup self tests, if we fail to add the tree reference, remove the extent item, or remove t...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Fixed a hang that occurred during unmount when the block group reclaim task was running. When starting an unmount, at closectree, if the reclaim task is running and is in the middle of a data block group relocation, a...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed a race condition when deleting the quota root from the “dirtycowonlyroots” list. When disabling quotas, we delete the quota root from the fsinfo-dirtycowonlyroots list without locking it, which requires the protectio...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Additional debug information will be output if an inline backref cannot be found. BREAK Syzbot reported several warnings that were triggered within the function lookupInlineExtentBackref. CAUSE As usual, the reproducer of...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: replaced BUGON with error handling in updaterefforcow. Instead of using BUGON, simply return an error, log an error message, and abort the transaction if we encounter an extent buffer belonging to the relocation tree th...

CVE-2026-89644

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all exit paths. For direct writes into a NOCOW range,...

CVE-2026-89645

In the Linux kernel, the following vulnerability has been resolved: btrfs: drop recovered reloc root refs on recovery failure During relocation recovery, each fs root gets a reference to its relocation root. If loading or adding a later root fails, or if the first transaction commit fails,...

Linux Distros Unpatched Vulnerability : CVE-2026-89772

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: write-protect folios during data writeback commit 095be159f3eb btrfs: unify folio dirty flag clearing replaced the foliocleardirtyforio call in...

Linux Distros Unpatched Vulnerability : CVE-2026-89645

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: drop recovered reloc root refs on recovery failure During relocation recovery, each fs root gets a reference to its relocation root. If loading or adding...

Linux Distros Unpatched Vulnerability : CVE-2026-89644

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all...

CVE-2026-89645

A flaw was found in the btrfs file system in the Linux kernel. During relocation recovery, if an error occurs, such as a memory allocation failure, the system may not properly drop references to relocation roots. This oversight can lead to resource exhaustion, potentially allowing a local attacke...

CVE-2026-89772

A flaw was found in the Btrfs filesystem of the Linux kernel. This vulnerability allows a local attacker with write access to a memory-mapped file to modify data while it is being written to disk. This can lead to data corruption, where the integrity of the stored information is compromised, or...

CVE-2026-89644

A flaw was found in the Linux kernel's btrfs filesystem. When performing direct I/O writes in a NOCOW No Copy-On-Write range, an extent map reference may not be properly released if an error occurs during extent creation. This oversight can lead to an extent map leak, potentially causing memory...

CVE-2026-89772

In the Linux kernel, the following vulnerability has been resolved: btrfs: write-protect folios during data writeback commit 095be159f3eb "btrfs: unify folio dirty flag clearing" replaced the foliocleardirtyforio call in extentwritecachepages with a plain foliotestdirty check. Besides clearing th...