cbcvebase.
CVE-2024-56586
published 2024-12-27

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…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
15.3th percentile
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.

Affected

23 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.123-1 (bookworm)linux 6.1.123-1 (bookworm)
debianlinux-6.1< linux 6.1.123-1 (bookworm)linux 6.1.123-1 (bookworm)
linuxlinux
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < ac8aaf78bd039fa1be0acaa8e84a56499f79d721ac8aaf78bd039fa1be0acaa8e84a56499f79d721
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < dff561e4060d28edc9a2960d4a87f3c945a96aa3dff561e4060d28edc9a2960d4a87f3c945a96aa3
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < a365de2fbfbe1e6740bfb75ab5c3245cf7bbe4d7a365de2fbfbe1e6740bfb75ab5c3245cf7bbe4d7
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < ef517d2d21c3d8e2ad35b2bb728bd1c90a31e617ef517d2d21c3d8e2ad35b2bb728bd1c90a31e617
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 9669b28f81e0ec6305af7773846fbe2cef1e7d619669b28f81e0ec6305af7773846fbe2cef1e7d61
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 9e28513fd2858911dcf47b84160a8824587536b69e28513fd2858911dcf47b84160a8824587536b6
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < d5c367ef8287fb4d235c46a2f8c8d68715f3a0cad5c367ef8287fb4d235c46a2f8c8d68715f3a0ca
linuxlinux_kernel>= 0 < 5.10.234-15.10.234-1
linuxlinux_kernel>= 0 < 6.1.123-16.1.123-1
linuxlinux_kernel>= 0 < 6.12.5-16.12.5-1
linuxlinux_kernel>= 0 < 6.12.5-16.12.5-1
linuxlinux_kernel>= 0 < 5.4.0-211.2315.4.0-211.231
linuxlinux_kernel>= 0 < 5.15.0-135.1465.15.0-135.146
linuxlinux_kernel>= 0 < 6.8.0-58.606.8.0-58.60
linuxlinux_kernel>= 3.8 < 5.4.2875.4.287
linuxlinux_kernel>= 5.11 < 5.15.1745.15.174
linuxlinux_kernel>= 5.16 < 6.1.1206.1.120
linuxlinux_kernel>= 5.5 < 5.10.2315.10.231
linuxlinux_kernel>= 6.2 < 6.6.666.6.66
linuxlinux_kernel>= 6.7 < 6.12.56.12.5

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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