ffs

FFS - F File System This is a cli tool for searching files like grep that does not use the OS kernel to read files, but reads your disks directly. It is practically useless, but insanely cool. this is just 1.5k lines of C code that: requires sudo only when reading a raw device node e.g. /dev/rdis...

CVE-2026-80631

A flaw was found in the Linux kernel's Btrfs filesystem, specifically within its LZO decompression functionality. A local attacker could provide a specially crafted Btrfs image containing a compressed segment that, due to improper validation of its length, overflows the compressed input buffer...

btrfs_fixes

btrfsfixes: Custom BTRFS Repair Tools Custom tools written during recovery of a 12TB multi-device BTRFS pool with severe extent tree corruption that the native commands btrfs check --repair, --init-extent-tree, etc. could not repair. SeeINCIDENT-ANALYSIS.md for a structured case study of the...

UBUNTU-CVE-2026-80631

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject compressed segment that overflows the compressed input lzodecompressbio validates each on-disk segment length seglen only against the workspace cbuf size, not against the compressed input size compressedlen, th...

AZL-98102 CVE-2026-80631 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject compressed segment that overflows the compressed input lzodecompressbio validates each on-disk segment length seglen only against the workspace cbuf size, not against the compressed input size compressedlen, th...

CVE-2026-80631

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject compressed segment that overflows the compressed input lzodecompressbio validates each on-disk segment length seglen only against the workspace cbuf size, not against the compressed input size compressedlen, th...

CVE-2026-80631

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject compressed segment that overflows the compressed input lzodecompressbio validates each on-disk segment length seglen only against the workspace cbuf size, not against the compressed input size compressedlen, th...

CVE-2026-80631

CVE-2026-80631 affects the Linux kernel's btrfs LZO decompression path (lzo_decompress_bio() in fs/btrfs/lzo.c). The root cause is an insufficient validation check: each on-disk segment length (seg_len) is validated only against the workspace buffer size, not against the actual compressed input s...

CVE-2026-80631 btrfs: lzo: reject compressed segment that overflows the compressed input

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject compressed segment that overflows the compressed input lzodecompressbio validates each on-disk segment length seglen only against the workspace cbuf size, not against the compressed input size compressedlen, th...

EUVD-2026-67507

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject compressed segment that overflows the compressed input lzodecompressbio validates each on-disk segment length seglen only against the workspace cbuf size, not against the compressed input size compressedlen, th...

CVE-2026-80631 btrfs: lzo: reject compressed segment that overflows the compressed input

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject compressed segment that overflows the compressed input lzodecompressbio validates each on-disk segment length seglen only against the workspace cbuf size, not against the compressed input size compressedlen, th...

Linux Distros Unpatched Vulnerability : CVE-2026-80631

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: lzo: reject compressed segment that overflows the compressed input lzodecompressbio validates each on-disk segment length seglen only against the workspa...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098815)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098815 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: fix zero size inode with non-zero size after log replay When logging that an inode exists,...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098799)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098799 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: fix missing lastunlinktrans update when removing a directory When removing a directory we...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098773)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098773 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: do not free data reservation in fallback from inline due to -ENOSPC If we fail to create a...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098893)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098893 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: only release the dirty pages io tree after successful writes WARNING With extra warning o...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098735)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098735 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: ensure no dirty metadata is written back for an fs with errors BUG During development of a...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098958)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098958 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: don't BUG on unexpected delayed ref type in runonedelayedref There is no need to BUG, we c...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098821)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098821 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: reserve enough transaction items for qgroup ioctls Currently our qgroup ioctls don't...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098992)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098992 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: tracepoints: get correct superblock from dentry in event btrfssyncfile If overlay is used ...