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: Quota: Fixed a warning in dqgrab. The following issue occurs during fault injection: WARNING: CPU: 1 PID: 14870 at include/linux/quotaops.h:51 dquotdisable+0x13b7/0x18c0 Modules linked in: CPU: 1 PID: 14870 Comm: fsconfig Not...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: fixed a warning in ext4iomapbegin due to a race between bmap and write The issue occurs as follows: ------------ cut here ------------ WARNING: CPU: 3 PID: 9310 at fs/ext4/inode.c:3441 ext4iomapbegin+0x182/0x5d0 RIP:...

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: ext4: Fix for corruption during online resizing We observed corruption during online resizing of a file system that is larger than 16 TiB and has a 4k block size. When there are more than 2^32 blocks, resizeinode is turned off by...

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

In the Linux kernel, the following vulnerabilities have been resolved: ext4: fixed a warning in mbfindextent Syzbot identified the following issues: EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioreadnolock, ODIRECT, and fastcommit support! EXT4-fs loop0: orphan...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix for null-ptr-deref in ext4writeinfo I identified a bug involving null-ptr-deref as follows: ========================================== KASAN: null-ptr-deref in range 0x0000000000000068-0x000000000000006f CPU: 1 PID: 158...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ext4: Added the EXT4IGETBAD flag to prevent unexpected bad inodes. There are many places that may encounter problems and crash when ext4iget returns a bad inode. However, if the iget function returns a bad inode, it may not be...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Turn quotas off if mount fails after enabling quotas Yi discovered during a review of the patch “ext4: Don’t report errors with inconsistent journal features” that when ext4markrecoverycomplete returns an error value, the...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed a bug in ext4escacheextent when ext4splitextentat failed. We encountered the issue when running fsstress with an IO fault: 130747.323114 Kernel BUG at fs/ext4/extentsstatus.c:762! 130747.323117 Internal error: Oops...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ext4: Avoid resizing to a partial cluster size This patch prevents attempts to resize the filesystem to a cluster boundary that is not an integer multiple of the cluster size. Online resizing to a size that is not integral to the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Silence the warning when evicting an inode with dioreadnolock When evicting an inode with the default dioreadnolock setting, it may cause problems where unwritten extents are converted by the kworker after writing new, newl...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: Fixed a bug in ext4mbnew inodepa due to overflow. When calculating the end position of ext4freeextent, this position might be exactly where ext4lblkt i.e., uint overflows. For example, if acgex.felogical is 4294965248 and...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: improved error handling for ext4dirhash The ext4dirhash function almost never fails, especially since the “hash tree” feature was first introduced. However, with the addition of support for encrypted, case-folded file names...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: a potential memory leak has been fixed in ext4fcrecordmodified inode. Since krealloc may return NULL, in this case, state-fcmodifiedinodes may not be freed by krealloc. However, state-fcmodifiedinodes is already set to NULL...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: The block range must be validated before being used in ext4mbclearbb. The block range to be freed is validated in ext4freeblocks, using ext4 inodeblockvalid, and then it is passed to ext4mbclearbb. However, in some cases on...

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

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed an warning in ext4updateinlinedata. Syzbot identified the following issue: EXT4-fs loop0: Mounted a filesystem with ID 00000000-0000-0000-0000-000000000000 without a journal. Quota mode: none. fscrypt: Uses...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix deadlock due to corruption of mbcache entries When manipulating xattr blocks, a deadlock can occur due to infinite loops within ext4xattrblockset. In this process, we continuously try to reuse xattr blocks for mbcache,...

Astra Linux - уязвимость в u-boot

In Das U-Boot versions 2016.11-rc1 through 2019.07-rc4, an underflow can cause memcpy to overwrite a very large amount of data including the entire stack, while reading a crafted ext4 filesystem...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: In ext4, the work related to queued discard operations is always drained in ext4mbrelease. While reviewing the recent ext4 patch1, Sashiko raised the following concern2: If the file system is initially mounted with the discard...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: Do not set SBRDONLY after filesystem errors When the filesystem is mounted with errors=remount-ro, we previously set the SBRDONLY flag to prevent any further modifications to the filesystem. We knew that this approach misse...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix for leaking uninitialized memory in the fast-commit journal When space at the end of the fast-commit journal blocks is unused, make sure to zero it out so that uninitialized memory is not leaked to the disk...