PT-2026-64580

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject CLEAN SEGMENTS ioctl with out-of-range segment numbers Syzbot reported a hung task in nilfs transaction begin where multiple tasks performing chmod on a nilfs2 mount blocked for over 143 seconds waiting to acquire ...

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-2026-53320

A flaw was found in the Linux kernel's nilfs2 filesystem. A local attacker could exploit this vulnerability by sending a specially crafted input/output control ioctl request to the nilfsioctlmarkblocksdirty function. By providing a zero block number, the attacker can bypass a critical dead block...

SUSE CVE-2026-53320

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject zero bdoblocknr in nilfsioctlmarkblocksdirty nilfsioctlmarkblocksdirty uses bdoblocknr to detect dead blocks by comparing it with the current block number bdblocknr. If they differ, the block is considered dead and...

Linux Distros Unpatched Vulnerability : CVE-2026-53320

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nilfs2: reject zero bdoblocknr in nilfsioctlmarkblocksdirty nilfsioctlmarkblocksdirty uses bdoblocknr to detect dead blocks by comparing it with the current blo...

DEBIAN-CVE-2026-53320

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject zero bdoblocknr in nilfsioctlmarkblocksdirty nilfsioctlmarkblocksdirty uses bdoblocknr to detect dead blocks by comparing it with the current block number bdblocknr. If they differ, the block is considered dead and...

CVE-2026-53320

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject zero bdoblocknr in nilfsioctlmarkblocksdirty nilfsioctlmarkblocksdirty uses bdoblocknr to detect dead blocks by comparing it with the current block number bdblocknr. If they differ, the block is considered dead and...

CVE-2026-53320

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject zero bdoblocknr in nilfsioctlmarkblocksdirty nilfsioctlmarkblocksdirty uses bdoblocknr to detect dead blocks by comparing it with the current block number bdblocknr. If they differ, the block is considered dead and...

UBUNTU-CVE-2026-53320

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject zero bdoblocknr in nilfsioctlmarkblocksdirty nilfsioctlmarkblocksdirty uses bdoblocknr to detect dead blocks by comparing it with the current block number bdblocknr. If they differ, the block is considered dead and...

CVE-2026-53320 nilfs2: reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty()

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject zero bdoblocknr in nilfsioctlmarkblocksdirty nilfsioctlmarkblocksdirty uses bdoblocknr to detect dead blocks by comparing it with the current block number bdblocknr. If they differ, the block is considered dead and...

CVE-2026-53320

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject zero bdoblocknr in nilfsioctlmarkblocksdirty nilfsioctlmarkblocksdirty uses bdoblocknr to detect dead blocks by comparing it with the current block number bdblocknr. If they differ, the block is considered dead and...

CVE-2026-53320

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject zero bdoblocknr in nilfsioctlmarkblocksdirty nilfsioctlmarkblocksdirty uses bdoblocknr to detect dead blocks by comparing it with the current block number bdblocknr. If they differ, the block is considered dead and...

CVE-2026-53320

Technical details of CVE-2026-53320 are not publicly provided in the supplied documents; no vendor/product/patch information is confirmed here. Monitor for updates.

CVE-2026-53320 nilfs2: reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty()

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject zero bdoblocknr in nilfsioctlmarkblocksdirty nilfsioctlmarkblocksdirty uses bdoblocknr to detect dead blocks by comparing it with the current block number bdblocknr. If they differ, the block is considered dead and...

PT-2026-52959

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the nilfs2 file system where the nilfs ioctl mark blocks dirty function fails to validate the bd oblocknr variable. The function uses bd oblocknr to identify dead bloc...

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...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: blk-mq: use quiesced elevator switch when reinitializing queues CVE-2022-50552 In the Linux kernel, the following vulnerability has been resolved: net: clear the dst when changing skb protocol CVE-2025-38192 In th...

CVE-2026-55392 NILFS utilities - Undefined Behavior and Out-of-Memory via Unvalidated s_log_block_size

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...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: nilfs2: Fixed NULL pointer dereferencing in nilfspalloccommitfreeentry. Syzbot reported a NULL pointer dereferencing bug: NILFS loop0: segctord started. Construction interval = 5 seconds, CP frequency 3c 02 00 0f 85 26 05 00 0...

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

In the Linux kernel, the following vulnerability has been resolved: nilfs2: Fixed an underflow in calculations for the second superblock position. The macro NILFSSB2OFFSETBYTES calculates the position of the second superblock. This calculation results in an underflow when the devicesize argument ...