CVE-2026-31519

CVE-2026-31519 affects the Linux kernel btrfs subsystem. A race during subvolume creation and orphan cleanup can leave a valid subvolume’s dentry in a broken state, marked as a broken entry in the directory cache, preventing deletion or new writes in that location. Root cause: btrfs_orphan_cleanu...

CVE-2026-31519 btrfs: set BTRFS_ROOT_ORPHAN_CLEANUP during subvol create

In the Linux kernel, the following vulnerability has been resolved: btrfs: set BTRFSROOTORPHANCLEANUP during subvol create We have recently observed a number of subvolumes with broken dentries. ls-ing the parent dir looks like: drwxrwxrwt 1 root root 16 Jan 23 16:49 . drwxr-xr-x 1 root root 24 Ja...

Linux Distros Unpatched Vulnerability : CVE-2026-31519

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: set BTRFSROOTORPHANCLEANUP during subvol create We have recently observed a number of subvolumes with broken dentries. ls-ing the parent dir looks like:...

PT-2026-34424

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the btrfs file system where the BTRFS ROOT ORPHAN CLEANUP bit is not set during subvolume creation in the create subvol function. This can lead to a race condition...