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...

DEBIAN-CVE-2026-90260

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't clobber the extent buffer when zeroing it out On a zoned filesystem a freed-but-still-dirty tree block is written out as zeros EXTENTBUFFERZONEDZEROOUT only to keep the zone write pointer advancing...

CVE-2026-90260

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't clobber the extent buffer when zeroing it out On a zoned filesystem a freed-but-still-dirty tree block is written out as zeros EXTENTBUFFERZONEDZEROOUT only to keep the zone write pointer advancing...

EUVD-2026-81853

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't clobber the extent buffer when zeroing it out On a zoned filesystem a freed-but-still-dirty tree block is written out as zeros EXTENTBUFFERZONEDZEROOUT only to keep the zone write pointer advancing...

CVE-2026-90260 btrfs: zoned: don't clobber the extent buffer when zeroing it out

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't clobber the extent buffer when zeroing it out On a zoned filesystem a freed-but-still-dirty tree block is written out as zeros EXTENTBUFFERZONEDZEROOUT only to keep the zone write pointer advancing...

CVE-2026-90260

CVE-2026-90260 is a btrfs zoned filesystem vulnerability in the Linux kernel . The root cause is that btree_csum_one_bio() memzeroed the extent buffer's own folios before submission to advance the zone write pointer, destroying in-memory data while it was still referenced. When btrfs_free_tree_bl...

CVE-2026-90260: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't clobber the extent buffer when zeroing it out On a zoned filesystem a freed-but-still-dirty tree block is written out as zeros EXTENTBUFFERZONEDZEROOUT only to keep the zone write pointer advancing...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: udf: Fixed the issue of discarding data before allocation at the indirect extent boundary. When the preallocation extent is the first one in the extent block, the code would corrupt the extent tree header instead. This issue has...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: A sanity check for the btrfs root has been added in btrfssearchslot. Syzbot reports a nullptrderef issue in btrfssearchslot. The reproducer uses rescue=ibadroots, and the extent tree root is corrupted; as a result, the...

CVE-2026-80809

CVE-2026-80809 affects the Linux kernel's ocfs2 filesystem . The root cause is that ocfs2_calc_xattr_set_need() fails to reserve metadata blocks for a new xattr value's extent tree when the file already has an external xattr block, leaving meta_ac as NULL. On a fragmented filesystem , this causes...

PT-2026-85650

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix missing metadata reservation for large xattrs BUG lsetxattr panics the kernel when setting a large xattr value on a fragmented filesystem where the file already has an external xattr block. CAUSE ocfs2 calc xattr set...

ROS-20260825-73-0020

The vulnerability of the lookupInlineextentbackref function in the fs/btrfs/extent-tree.c file of the Linux kernel operating system involves the exposure of confidential information. Exploiting this vulnerability could allow an attacker to cause a service failure...

CVE-2026-53122

CVE-2026-53122: Linux kernel bug in btrfs where flushoncommit can deadlock a reflink with a pending transaction commit when copying an inline extent beyond i_size. The issue arises from locking sequences between reflink/commit paths and delalloc/ordered extents, leading to a cycle where two tasks...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Fix for corruption in the blockgrouptree dirtylist. When the incompat flag EXTENTTREEV2 is set, we unconditionally add the block group tree to the switchcommits list before calling switchcommitroots, just like we do for...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Rejects new transactions if the file system is fully read-only. BUG There is a bug report where a heavily fuzzed file system is mounted with all rescue mount options. This leads to the following warnings during unmount:...

SUSE CVE-2026-46251

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix blockgrouptree dirtylist corruption When the incompat flag EXTENTTREEV2 is set, we unconditionally add the block group tree to the switchcommits list before calling switchcommitroots, as we do for the tree root and the...

CVE-2026-46251

A flaw was found in the Linux kernel's Btrfs filesystem. When the EXTENTTREEV2 incompatibility flag is enabled, the block group tree's dirty list can become corrupted. This corruption occurs because the block group tree is incorrectly added to a commit list while already being tracked, leading to...

CVE-2026-46251

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix blockgrouptree dirtylist corruption When the incompat flag EXTENTTREEV2 is set, we unconditionally add the block group tree to the switchcommits list before calling switchcommitroots, as we do for the tree root and the...

CVE-2026-46251

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix blockgrouptree dirtylist corruption When the incompat flag EXTENTTREEV2 is set, we unconditionally add the block group tree to the switchcommits list before calling switchcommitroots, as we do for the tree root and the...

EUVD-2026-34113

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix blockgrouptree dirtylist corruption When the incompat flag EXTENTTREEV2 is set, we unconditionally add the block group tree to the switchcommits list before calling switchcommitroots, as we do for the tree root and the...