CVE-2023-53101

In the Linux kernel, the following vulnerability has been resolved: ext4: zero i_disksize when initializing the bootloader inode If the boot loader inode has never been used before, the EXT4_IOC_SWAP_BOOT inode will initialize it, including setting the i_size to 0. However, if the "never before used" boot loader has a non-zero i_size, then i_disksize will be non-zero, and the inconsistency between i_size and i_disksize can trigger a kernel warning: WARNING: CPU: 0 PID: 2580 at fs/ext4/file.c:319 CPU: 0 PID: 2580 Comm: bb Not tainted 6.3.0-rc1-00004-g703695902cfa RIP: 0010:ext4_file_write_iter+0xbc7/0xd10 Call Trace: vfs_write+0x3b1/0x5c0 ksys_write+0x77/0x160 __x64_sys_write+0x22/0x30 do_syscall_64+0x39/0x80 Reproducer: 1. create corrupted image and mount it: mke2fs -t ext4 /tmp/foo.img 200 debugfs -wR "sif <5> size 25700" /tmp/foo.img mount -t ext4 /tmp/foo.img /mnt cd /mnt echo 123 > file 2. Run the reproducer program: posix_memalign(&buf, 1024, 1024) fd = open("file", O_RDWR | O_DIRECT); ioctl(fd, EXT4_IOC_SWAP_BOOT); write(fd, buf, 1024); Fix this by setting i_disksize as well as i_size to zero when initiaizing the boot loader inode.

• https://git.kernel.org/stable/c/01a821aacc64d4b05dafd239dbc9b7856686002fPatch
• https://git.kernel.org/stable/c/0d8a6c9a6415999fee1259ccf1796480c026b7d6Patch
• https://git.kernel.org/stable/c/3f00c476da8fe7c4c34ea16abb55d74127120413Patch
• https://git.kernel.org/stable/c/59eee0cdf8c036f554add97a4da7c06d7a9ff34aPatch
• https://git.kernel.org/stable/c/9cb27b1e76f0cc886ac09055bc41c0ab3f205167Patch
• https://git.kernel.org/stable/c/9e9a4cc5486356158554f6ad73027d8635a48b34Patch
• https://git.kernel.org/stable/c/d6c1447e483c05dbcfb3ff77ac04237a82070b8cPatch
• https://git.kernel.org/stable/c/f5361da1e60d54ec81346aee8e3d8baf1be0b762Patch

Published

May 2, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2023-53096In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2023-53097In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2023-53098In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2023-53099In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2023-5310A denial of service vulnerability exists in all Silicon Labs…6.5
• CVE-2023-53100In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2023-53102In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2023-53103In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2023-53104Rejected reason: This CVE ID has been rejected or withdrawn …
• CVE-2023-53105In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2023-53106In the Linux kernel, the following vulnerability has been re…7.8
• CVE-2023-53107In the Linux kernel, the following vulnerability has been re…7.8