kernel: ext4: dax: fix overflowing extents beyond inode size when partially writing

An inode corruption flaw was found in the Linux kernel's Ext4 file system functionality related to how a user can interrupt a write using the daxiomaprwfunction. This flaw allows a local user to make non-fatal mistakes with Ext4, leading to a file system denial of service...

kernel: ext4: make sure the first directory block is not a hole

The syzbot constructs a directory that has no dirblock but is non-inline, i.e. the first directory block is a hole. And no errors are reported when creating files in this directory. Then, we get a directory block without '.' and '..' but with a valid dentry. This may cause some code that relies o...

kernel: ext4: sanity check for NULL pointer after ext4_force_shutdown

REJECTED CVE A NULL pointer dereference vulnerability has been identified in the Linux Kernel's ext4 filesystem. The issue occurs during concurrent write operations with inline data, where an ext4forceshutdown is triggered due to inconsistencies like "block bitmap and bg descriptor inconsistent."...

kernel: ext4: check dot and dotdot of dx_root before making dir indexed

A flaw was found in the Linux kernel's ext4 filesystem. When converting a directory to an indexed format, the system incorrectly assumes the presence of "dot" and "dotdot" entries. A local attacker could create a specially crafted filesystem image that, when processed during a rename operation,...

kernel: ext4: fix infinite loop when replaying fast_commit

In the Linux kernel, the following vulnerability has been resolved: ext4: fix infinite loop when replaying fastcommit When doing fastcommit replay an infinite loop may occur due to an uninitialized extentstatus struct. ext4extdetermineinserthole does not detect the replay and calls...

Huawei EulerOS: Security Advisory for uboot-tools (EulerOS-SA-2025-1540)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

EulerOS 2.0 SP10 : uboot-tools (EulerOS-SA-2025-1540)

According to the versions of the uboot-tools package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : An integer overflow in ext4fsreadsymlink in Das U-Boot before 2025.01-rc1 occurs for zalloc adding one to an le32 variable via a crafted ext4...

SUSE CVE-2022-49879

In the Linux kernel, the following vulnerability has been resolved: ext4: fix BUGON when directory entry has invalid reclen The reclen field in the directory entry has to be a multiple of 4. A corrupted filesystem image can be used to hit a BUG in ext4reclentodisk, called from makeindexeddir...

SUSE CVE-2022-49880

In the Linux kernel, the following vulnerability has been resolved: ext4: fix warning in 'ext4dareleasespace' Syzkaller report issue as follows: EXT4-fs loop0: Free/Dirty block details EXT4-fs loop0: freeblocks=0 EXT4-fs loop0: dirtyblocks=0 EXT4-fs loop0: Block reservation details EXT4-fs loop0:...

ext4: fix OOB read when checking dotdot dir

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CVE-2023-53143

In the Linux kernel, the following vulnerability has been resolved: ext4: fix another off-by-one fsmap error on 1k block filesystems Apparently syzbot figured out that issuing this FSMAP call: struct fsmaphead cmd = .fmhcount = ...; .fmhkeys = .fmrdevice = / ext4 dev /, .fmrphysical = 0, ,...

CVE-2023-53129

REJECTED CVE In the Linux kernel, the following vulnerability has been resolved: ext4: Fix deadlock during directory rename As lockdep properly warns, we should not be locking irwsem while having transactions started as the proper lock ordering used by all directory handling operations is irwsem ...

CVE-2023-53091

In the Linux kernel, the following vulnerability has been resolved: ext4: update sjournalinum if it changes after journal replay When mounting a crafted ext4 image, sjournalinum may change after journal replay, which is obviously unreasonable because we have successfully loaded and replayed the...

CVE-2023-53101

In the Linux kernel, the following vulnerability has been resolved: ext4: zero idisksize when initializing the bootloader inode If the boot loader inode has never been used before, the EXT4IOCSWAPBOOT inode will initialize it, including setting the isize to 0. However, if the "never before used"...

CVE-2023-53137

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix possible corruption when moving a directory When we are renaming a directory to a different directory, we need to update '..' entry in the moved directory. However nothing prevents moved directory from being modified an...

CVE-2023-53100

In the Linux kernel, the following vulnerability has been resolved: ext4: fix WARNING in ext4updateinlinedata Syzbot found the following issue: EXT4-fs loop0: mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: none. fscrypt: AES-256-CTS-CBC using implementation...

CVE-2023-53089

In the Linux kernel, the following vulnerability has been resolved: ext4: fix task hung in ext4xattrdeleteinode Syzbot reported a hung task problem: ================================================================== INFO: task syz-executor232:5073 blocked for more than 143 seconds. Not tainted...

SUSE CVE-2023-53089

In the Linux kernel, the following vulnerability has been resolved: ext4: fix task hung in ext4xattrdeleteinode Syzbot reported a hung task problem: ================================================================== INFO: task syz-executor232:5073 blocked for more than 143 seconds. Not tainted...

SUSE CVE-2023-53091

In the Linux kernel, the following vulnerability has been resolved: ext4: update sjournalinum if it changes after journal replay When mounting a crafted ext4 image, sjournalinum may change after journal replay, which is obviously unreasonable because we have successfully loaded and replayed the...

SUSE CVE-2023-53100

In the Linux kernel, the following vulnerability has been resolved: ext4: fix WARNING in ext4updateinlinedata Syzbot found the following issue: EXT4-fs loop0: mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: none. fscrypt: AES-256-CTS-CBC using implementation...