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 – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: nilfs2: A bug in markbufferdirty was fixed, as it sometimes generates a warning due to the forced discard of reused buffers. A syzbot stress test using a corrupted disk image revealed that markbufferdirty called from nilfsmark...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: nilfs2: Fixed a shift-out-of-bounds/overflow issue in nilfssb2badoffset. The patch series “nilfs2: Fix UBSAN shift-out-of-bounds warnings during mount time” addresses this issue. The first patch fixes a bug reported by syzbot,...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fixed a general protection fault in nilfsbtreeinsert If nilfs2 reads a corrupted disk image and attempts to read a b-tree node by calling nilfsbtreegetblock against an invalid virtual block address, it returns -ENOENT...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: nilfs2: Replaces WARNONs with nilfserror in cases where checkpoint acquisition fails. If the creation or finalization of a checkpoint fails due to anomalies in the checkpoint metadata on disk, a kernel warning is generated. This...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nilfs2: The OOB issue in nilfssetdetype has been fixed. The size of the nilfstypebymode array in the fs/nilfs2/dir.c file is defined as “SIFT SSHIFT”. However, the nilfssetdetype function, which uses this array, specifies the ind...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nilfs2: The use-after-free of nilfsroot occurred during the process of dirtying inodes via iput. During the unmount process of nilfs2, nothing holds the nilfsroot structure after nilfsdetachlogwriter releases it. Previously,...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: nilfs2: Fixing the lifetime of the sysfs interface The current nilfs2 sysfs support has issues with the timing of the creation and deletion of sysfs entries. This may lead to null pointer dereferences, use-after-free errors, a...

Astra Linux – Vulnerability in Linux 5.10, Linux

A vulnerability has been discovered in the Linux kernel. It has been classified as problematic. The affected function is nilfsbmaplookupatlevel in the file fs/nilfs2/inode.c of the nilfs2 component. Manipulation of this function can lead to a null pointer dereference. The attack can be launched...

nilfs2: fix NULL i_assoc_inode dereference in nilfs_mdt_save_to_shadow_map

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Unity Linux 20.1060a Security Update: kernel (UTSA-2026-014340)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-014340 advisory. In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent use of deleted inode syzbot reported a WARNING in nilfsrmdir. 1 Because the inode...