CVE-2024-56586

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-56586
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix f2fs_bug_on when uninstalling filesystem call f2fs_evict_inode. creating a large files during checkpoint disable until it runs out of space and then delete it, then remount to enable checkpoint again, and then unmount the filesystem triggers the f2fs_bug_on as below: ------------[ cut here ]------------ kernel BUG at fs/f2fs/inode.c:896! CPU: 2 UID: 0 PID: 1286 Comm: umount Not tainted 6.11.0-rc7-dirty #360 Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:f2fs_evict_inode+0x58c/0x610 Call Trace: __die_body+0x15/0x60 die+0x33/0x50 do_trap+0x10a/0x120 f2fs_evict_inode+0x58c/0x610 do_error_trap+0x60/0x80 f2fs_evict_inode+0x58c/0x610 exc_invalid_op+0x53/0x60 f2fs_evict_inode+0x58c/0x610 asm_exc_invalid_op+0x16/0x20 f2fs_evict_inode+0x58c/0x610 evict+0x101/0x260 dispose_list+0x30/0x50 evict_inodes+0x140/0x190 generic_shutdown_super+0x2f/0x150 kill_block_super+0x11/0x40 kill_f2fs_super+0x7d/0x140 deactivate_locked_super+0x2a/0x70 cleanup_mnt+0xb3/0x140 task_work_run+0x61/0x90 The root cause is: creating large files during disable checkpoint period results in not enough free segments, so when writing back root inode will failed in f2fs_enable_checkpoint. When umount the file system after enabling checkpoint, the root inode is dirty in f2fs_evict_inode function, which triggers BUG_ON. The steps to reproduce are as follows: dd if=/dev/zero of=f2fs.img bs=1M count=55 mount f2fs.img f2fs_dir -o checkpoint=disable:10% dd if=/dev/zero of=big bs=1M count=50 sync rm big mount -o remount,checkpoint=enable f2fs_dir umount f2fs_dir Let's redirty inode when there is not free segments during checkpoint is disable.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/9669b28f81e0ec6305af7773846fbe2cef1e7d61 Patch
https://git.kernel.org/stable/c/9e28513fd2858911dcf47b84160a8824587536b6 Patch
https://git.kernel.org/stable/c/a365de2fbfbe1e6740bfb75ab5c3245cf7bbe4d7 Patch
https://git.kernel.org/stable/c/ac8aaf78bd039fa1be0acaa8e84a56499f79d721 Patch
https://git.kernel.org/stable/c/d5c367ef8287fb4d235c46a2f8c8d68715f3a0ca Patch
https://git.kernel.org/stable/c/dff561e4060d28edc9a2960d4a87f3c945a96aa3 Patch
https://git.kernel.org/stable/c/ef517d2d21c3d8e2ad35b2bb728bd1c90a31e617 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

07 Oct 2025, 17:19

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/9669b28f81e0ec6305af7773846fbe2cef1e7d61 - () https://git.kernel.org/stable/c/9669b28f81e0ec6305af7773846fbe2cef1e7d61 - Patch
References () https://git.kernel.org/stable/c/9e28513fd2858911dcf47b84160a8824587536b6 - () https://git.kernel.org/stable/c/9e28513fd2858911dcf47b84160a8824587536b6 - Patch
References () https://git.kernel.org/stable/c/a365de2fbfbe1e6740bfb75ab5c3245cf7bbe4d7 - () https://git.kernel.org/stable/c/a365de2fbfbe1e6740bfb75ab5c3245cf7bbe4d7 - Patch
References () https://git.kernel.org/stable/c/ac8aaf78bd039fa1be0acaa8e84a56499f79d721 - () https://git.kernel.org/stable/c/ac8aaf78bd039fa1be0acaa8e84a56499f79d721 - Patch
References () https://git.kernel.org/stable/c/d5c367ef8287fb4d235c46a2f8c8d68715f3a0ca - () https://git.kernel.org/stable/c/d5c367ef8287fb4d235c46a2f8c8d68715f3a0ca - Patch
References () https://git.kernel.org/stable/c/dff561e4060d28edc9a2960d4a87f3c945a96aa3 - () https://git.kernel.org/stable/c/dff561e4060d28edc9a2960d4a87f3c945a96aa3 - Patch
References () https://git.kernel.org/stable/c/ef517d2d21c3d8e2ad35b2bb728bd1c90a31e617 - () https://git.kernel.org/stable/c/ef517d2d21c3d8e2ad35b2bb728bd1c90a31e617 - Patch
CWE NVD-CWE-noinfo
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: se corrige f2fs_bug_on al desinstalar el sistema de archivos, se llama f2fs_evict_inode. La creación de archivos grandes durante el punto de control se desactiva hasta que se queda sin espacio y luego se elimina, luego se vuelve a montar para habilitar el punto de control nuevamente y luego se desmonta el sistema de archivos, lo que activa f2fs_bug_on como se muestra a continuación: ------------[ cortar aquí ]------------ ¡ERROR del kernel en fs/f2fs/inode.c:896! CPU: 2 UID: 0 PID: 1286 Comm: umount No contaminado 6.11.0-rc7-dirty #360 Oops: código de operación no válido: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:f2fs_evict_inode+0x58c/0x610 Rastreo de llamadas: __die_body+0x15/0x60 die+0x33/0x50 do_trap+0x10a/0x120 f2fs_evict_inode+0x58c/0x610 do_error_trap+0x60/0x80 f2fs_evict_inode+0x58c/0x610 exc_invalid_op+0x53/0x60 f2fs_evict_inode+0x58c/0x610 La causa raíz es: crear archivos grandes durante el período del punto de control de deshabilitación da como resultado que no haya suficientes segmentos libres, por lo que al volver a escribir el inodo raíz, fallará en f2fs_enable_checkpoint. Al desmontar el sistema de archivos después de habilitar el punto de control, el inodo raíz está sucio en la función f2fs_evict_inode, lo que activa BUG_ON. Los pasos para reproducir son los siguientes: dd if=/dev/zero of=f2fs.img bs=1M count=55 mount f2fs.img f2fs_dir -o checkpoint=disable:10% dd if=/dev/zero of=big bs=1M count=50 sync rm big mount -o remount,checkpoint=enable f2fs_dir umount f2fs_dir Vamos a volver a ensuciar el inodo cuando no haya segmentos libres mientras se deshabilita el punto de control.

27 Dec 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-12-27 15:15

Updated : 2025-10-07 17:19

NVD link : CVE-2024-56586

Mitre link : CVE-2024-56586

CVE.ORG link : CVE-2024-56586

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo