EUVD-2026-82080

In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent out-of-bounds read in super root block parsing super-root inode metadata size is trusted before nilfsreadinodecommon. Reject super-root inode sizes whose computed on-disk footprint exceeds the filesystem block siz...

CVE-2026-90419 nilfs2: prevent out-of-bounds read in super root block parsing

In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent out-of-bounds read in super root block parsing super-root inode metadata size is trusted before nilfsreadinodecommon. Reject super-root inode sizes whose computed on-disk footprint exceeds the filesystem block siz...

CVE-2026-90418 nilfs2: fix BUG in nilfs_copy_dirty_pages() on dirty state mismatch

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix BUG in nilfscopydirtypages on dirty state mismatch Syzbot reported a kernel BUG triggered within nilfscopydirtypages, which copies dirty DAT file folios/pages to its shadow page cache. The BUG occurs when a retrieved...

CVE-2026-90418

CVE-2026-90418 affects the Linux kernel's nilfs2 filesystem in the function nilfs_copy_dirty_pages() , which copies dirty DAT file folios/pages to a shadow page cache. The root cause is that the 'dirty' flag of a folio/page can be cleared asynchronously after the filesystem detects metadata corru...

CVE-2026-90418: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix BUG in nilfscopydirtypages on dirty state mismatch Syzbot reported a kernel BUG triggered within nilfscopydirtypages, which copies dirty DAT file folios/pages to its shadow page cache. The BUG occurs when a retrieved...

CVE-2026-90419: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent out-of-bounds read in super root block parsing super-root inode metadata size is trusted before nilfsreadinodecommon. Reject super-root inode sizes whose computed on-disk footprint exceeds the filesystem block siz...

CVE-2026-90420: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix infinite loop in nilfscleansegments syzbot reported a hung task in nilfstransactionbegin. This occurs because the cleaner ioctl falls into an infinite loop if nilfssegctorconstruct repeatedly returns -EROFS e.g. the...

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: Added a missing check for inode numbers in directory entries. Syzbot reported that mounting and unmounting a specific pattern of corrupted Nilfs2 filesystem images causes a use-after-free of metadata file inodes, which...

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: Fixed a kernel bug related to the rename operation on broken directories. Syzbot reported that in the rename operation on broken directories in Nilfs2, the blockwritebeginint function called to prepare block writing may...

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

In the Linux kernel, the following vulnerability has been resolved: Nilfs2: Rejects invalid file types when reading inodes. To prevent inodes with invalid file types from causing malfunctions or assertion failures, add a sanity check when reading an inode from a block device. If the file type is...

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 potential hang occurred in nilfsdetachlogwriter. Syzbot reported a potential hang during nilfsdetachlogwriter called when nilfs2 unmounts the file system. Analysis revealed that this issue arises because nilfssegctorsyn...

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

In the Linux kernel, the following vulnerabilities have been resolved: nilfs2: Fix for a use-after-free of the timer for the log writer thread This patch series, titled “nilfs2: Fix for log writer-related issues”, addresses three issues related to the nilfs2 log writer. These include a...

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

In the Linux kernel, the following vulnerabilities have been resolved: nilfs2: Fixing inode number range checks The patch series “nilfs2: Fixing potential issues related to reserved inodes” addresses these issues. This series fixes a use-after-free issue reported by syzbot, which was caused by th...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

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

In the Linux kernel, the following vulnerabilities have been resolved: nilfs2: Fixed a failure to detect corruption of DAT files in BTree and direct mappings. The patch series is titled “nilfs2: Fix kernel bug at submitbhwbc”. This resolves a kernel bug reported by syzbot. Since there are two...

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: Protect references to superblock parameters exposed in sysfs The superblock buffers of nilfs2 can not only be overwritten at runtime for modifications/repairs, but they are also regularly swapped, replaced during resizing...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nilfs2: A shift-out-of-bounds condition has been fixed due to an overly large exponent of the block size. If the slogblocksize field in the superblock data is corrupted and too large, initnilfs and loadnilfs may still trigger a...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

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

In the Linux kernel, the following vulnerability has been resolved: Nilfs2: Fixed a kernel bug caused by failing to clear the buffer delay flag. Syzbot reported that after Nilfs2 reads a corrupted file system image and becomes read-only, the BUGON check for the buffer delay flag in submitbhwbc ma...