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

In the Linux kernel, the following vulnerability has been resolved: EXT4: Zeroing idisksize when initializing the bootloader inode If the bootloader inode has never been used before, the EXT4IOCSWAPBOOT inode will initialize it, including setting isize to 0. However, if the “never before used”...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed an inode leak in ext4xattrinodecreate, which occurs on an error path. There is a issue when using setxattr with a fault injection: localhost fsck.ext4 -fn /dev/sda e2fsck 1.46.6-rc1 12-Sep-2022 Pass 1: Checking...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ext4: fixed a race condition between ext4write and ext4convertinlinedata Hulk Robot reported a BUG: ================================================================== EXT4-fs error device loop3: ext4mbgeneratebuddy:805: group 0,...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: memory leaks have been fixed in ext4fnamesetupfilename,preparelookup. If filename case-folding fails, memory will be leaked from the fscryptname structure, specifically from the 'cryptobuf.name' member. Make sure that this...

Astra Linux – Vulnerability in Linux

A vulnerability was discovered in the Linux kernel, where an information leak occurs through the ext4extentheader to the user space...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ext4: Avoid cycles in the h-tree A maliciously corrupted filesystem can contain cycles in the h-tree stored inside a directory. This can easily lead to the kernel corrupting tree nodes that have already been verified during...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: ext4: fixed the bug in estreesearch Hulk Robot reported a BUG: kernel BUG at fs/ext4/extentsstatus.c:199! ... RIP: 0010:ext4esend fs/ext4/extentsstatus.c:199 inline RIP: 0010:estreesearch+0x1e0/0x260 fs/ext4/extentsstatus.c:21...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: fix invalid free tracking in ext4xattrMoveToBlock In ext4xattrMoveToBlock, the value of the extended attribute that we need to move to an external block may be allocated by kvmalloc if the value is stored in an external...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ext4: Do not report a bug if someone dirty pages without first consulting ext4. The unpinuserpagesremote function dirty pages without properly warning the file system in advance. Jan Kara noted this race condition in 20181...

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

A use-after-free flaw was discovered in the ext4remount function in the fs/ext4/super.c file within ext4 in the Linux kernel. This flaw allows a local user to cause an information leak issue when freeing the old quota file names before a potential failure, resulting in a use-after-free condition...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ext4: fixed the bug in ext4writepages We encountered the following issue: EXT4-fs error device loop0: ext4mbgeneratebuddy:1141: group 0, block bitmap and bg descriptor inconsistent: 25 vs 31513 free cls ------------ cut here...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Initializing quotas for ‘old.inode’ in ‘ext4rename’. Syzbot identified the following issues: - ext4parseparam: swantextraisize=128 - ext4inodeinfoinit: swantextraisize=32 - ext4rename: old.inode=ffff88823869a2c8;...

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 double-free of blocks due to incorrect movedlen values during extent movements. In ext4moveextents, movedlen is updated only when all movements are successfully executed. It also discards preallocations for originod...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: Fixed the function prototype mismatch in ext4featktype. With Clang’s Kernel Control Flow Integrity kCFI, CONFIGCFICLANG, indirect call targets are validated against the expected function pointer prototype to ensure that the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Allow ext4getgroupinfo to fail. Previously, ext4getgroupinfo would treat an invalid group number as a BUG, since this should never happen in theory. However, if a malicious attacker modifies the superblock via the block...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: A bug has been fixed in ext4mbreleasegrouppa. If a malicious fuzzer overwrites the ext4 superblock while it is mounted, causing sfirstdatablock to be set to a very large number, the calculation of the block group may...

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

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed a task that was stuck in ext4xattrdeleteinode. Syzbot reported a problem with stuck tasks: ================================================================== INFO: Task syz-executor232:5073 is blocked for more than...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Handle wraparound when searching for blocks for indirectly mapped blocks The commit 4865c768b563 states that “ext4: Always allocate blocks only from groups that inode can use” restricts the blocks that will be allocated for...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021603)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021603 advisory. In the Linux kernel, the following vulnerability has been resolved: nfsd: map the EBADMSG to nfserrio to avoid warning Ext4 will throw -EBADMSG through ext4readdir...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021555)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021555 advisory. In the Linux kernel, the following vulnerability has been resolved: ext4: avoid deadlock in fs reclaim with page writeback Ext4 has a filesystem wide lock protectin...