Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nilfs2: A potential block overflow issue that could cause system hangs has been fixed. When a user executes the FITRIM command, a underflow can occur when calculating nblocks, if the endblock is too small. Since nblocks is of the...

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 potential deadlocks caused by newly created symlinks. Syzbot reported that pagesymlink, called by nilfssymlink, triggers memory reclamation involving the filesystem layer. This can lead to circular lock dependencies...

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: prevented the use of deleted inodes. syzbot reported a warning in nilfsrmdir. 1 Due to the corrupted inode bitmap, an inode with a number that should exist as a ".nilfs" file was reassigned by nilfsmkdir for "file0",...

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 potential kernel bug due to the lack of a writeback flag during waiting. Destructive writes to a block device on which nilfs2 is mounted can cause a kernel bug in the folio/page writeback start routine or writebac...

Astra Linux – Vulnerability found in 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 ...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

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 – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nilfs2: A general protection fault occurred 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 found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nilfs2: Access to buffers is protected when there are no active references to them. The function nilfslookupdirtydatabuffers iterates through buffers attached to dirty data folios/pages. It accesses these attached buffers without...

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: Fix null-ptr-deref in blocktouchbuffer tracepoint The patch series “nilfs2: Fix null-ptr-deref bugs on block tracepoints” addresses these bugs that occur when using nilfs2 and two block-related tracepoints. This patch...

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

In the Linux kernel, the following vulnerability has been resolved: Nilfs2: Do not write dirty data after degrading to read-only. According to the syzbot report, the call to markbufferdirty from nilfssegctordoconstruct generates a warning with certain patterns after nilfs2 detects metadata...

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: Do not force clear the buffer if it is referenced. The patch series “nilfs2: Protect busy buffer heads from being forced to be cleared” addresses this issue. This patch fixes the inconsistency in buffer head states report...

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: Handling of inconsistent states in nilfsbtnodecreateblock. Syzbot reported that an inconsistency in the buffer state was detected in nilfsbtnodecreateblock, which triggered a kernel bug. It is not appropriate to consider...

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

In the Linux kernel, the following vulnerability has been resolved: nilfs2: A infinite loop has been fixed in nilfsmdtgetblock. If the disk image that nilfs2 mounts is corrupted, and the virtual block address obtained through block lookup for a metadata file is invalid, nilfsbmaplookupatlevel may...

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 the lack of clearing of the “checked” flag. Syzbot reported that in directory operations, after Nilfs2 detects filesystem corruption and becomes read-only, blockwritebeginint may fail the BUGO...

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 potential bug in endbufferasyncwrite According to a syzbot report, endbufferasyncwrite, which handles the completion of block device writes, may detect abnormal conditions of the asyncwrite flag and cause a BUGON...

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 “SIFMT SSHIFT”. However, the nilfssetdetype function, which uses this array, specifies the...

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: Handling of errors returned by nilfspreparechunk The patch series “nilfs2: fix issues with rename operations” addresses these issues. This series corrects BUGON check failures reported by syzbot during rename operation...

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 error related to directory read operations from nilfsfindentry is now propagated to the calling functions. Syzbot reported that a task hang occurred in vcsopen during a fuzzing test for nilfs2. The root cause of this...

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

In the Linux kernel, the following vulnerability has been resolved: nilfs2: A potential out-of-band OOB read issue has been fixed in nilfsbtreecheckdelete. The function nilfsbtreecheckdelete checks whether degeneration to direct mapping occurs before deleting a b-tree entry. This can lead to memo...

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: Fixed state management in the error path of the log writing function. After the commit a694291a6211 “nilfs2: separate the wait function from nilfssegctorwrite” was applied, the log writing function...