OESA-2026-2840 nilfs-utils security update

Userspace utilities for creating and mounting NILFS v2 filesystems. Security Fixes: NILFS utilities through 2.3.0, fixed in commit 26efb5d, nilfssbisvalid function fails to validate slogblocksize field in NILFS2 superblock before bit-shift operations. Attackers supplying crafted NILFS2 images...

CVE-2026-55392

A flaw was found in NILFS utilities. An attacker can exploit this vulnerability by supplying a crafted NILFS2 image. This can lead to undefined behavior, oversized shifts, or out-of-memory conditions, ultimately causing a Denial of Service DoS by crashing tools such as nilfs-tune and dumpseg...

Linux Distros Unpatched Vulnerability : CVE-2026-55392

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NILFS utilities through 2.3.0, fixed in commit 26efb5d, nilfssbisvalid function fails to validate slogblocksize field in NILFS2 superblock before bit-shift...

CVE-2026-55392

NILFS utilities through 2.3.0, fixed in commit 26efb5d, nilfssbisvalid function fails to validate slogblocksize field in NILFS2 superblock before bit-shift operations. Attackers supplying crafted NILFS2 images trigger undefined behavior through oversized shifts or out-of-memory conditions, crashi...

UBUNTU-CVE-2026-55392

NILFS utilities through 2.3.0, fixed in commit 26efb5d, nilfssbisvalid function fails to validate slogblocksize field in NILFS2 superblock before bit-shift operations. Attackers supplying crafted NILFS2 images trigger undefined behavior through oversized shifts or out-of-memory conditions, crashi...

CVE-2026-55392

CVE-2026-55392 affects NILFS utilities up to version 2.3.0. The root cause is nilfs_sb_is_valid() not validating s_log_block_size in the NILFS2 superblock before bit-shift operations, enabling undefined behavior from oversized shifts and potential out-of-memory conditions that can crash tools lik...

CVE-2026-55392

NILFS utilities through 2.3.0, fixed in commit 26efb5d, nilfssbisvalid function fails to validate slogblocksize field in NILFS2 superblock before bit-shift operations. Attackers supplying crafted NILFS2 images trigger undefined behavior through oversized shifts or out-of-memory conditions, crashi...