CVE-2024-42297

CVE Details

Release Date:

2024-08-17

Description

In the Linux kernel, the following vulnerability has been resolved:\nf2fs: fix to don't dirty inode for readonly filesystem\nsyzbot reports f2fs bug as below:\nkernel BUG at fs/f2fs/inode.c:933!\nRIP: 0010:f2fs_evict_inode+0x1576/0x1590 fs/f2fs/inode.c:933\nCall Trace:\nevict+0x2a4/0x620 fs/inode.c:664\ndispose_list fs/inode.c:697 [inline]\nevict_inodes+0x5f8/0x690 fs/inode.c:747\ngeneric_shutdown_super+0x9d/0x2c0 fs/super.c:675\nkill_block_super+0x44/0x90 fs/super.c:1667\nkill_f2fs_super+0x303/0x3b0 fs/f2fs/super.c:4894\ndeactivate_locked_super+0xc1/0x130 fs/super.c:484\ncleanup_mnt+0x426/0x4c0 fs/namespace.c:1256\ntask_work_run+0x24a/0x300 kernel/task_work.c:180\nptrace_notify+0x2cd/0x380 kernel/signal.c:2399\nptrace_report_syscall include/linux/ptrace.h:411 [inline]\nptrace_report_syscall_exit include/linux/ptrace.h:473 [inline]\nsyscall_exit_work kernel/entry/common.c:251 [inline]\nsyscall_exit_to_user_mode_prepare kernel/entry/common.c:278 [inline]\n__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]\nsyscall_exit_to_user_mode+0x15c/0x280 kernel/entry/common.c:296\ndo_syscall_64+0x50/0x110 arch/x86/entry/common.c:88\nentry_SYSCALL_64_after_hwframe+0x63/0x6b\nThe root cause is:\n- do_sys_open\n- f2fs_lookup\n- __f2fs_find_entry\n- f2fs_i_depth_write\n- f2fs_mark_inode_dirty_sync\n- f2fs_dirty_inode\n- set_inode_flag(inode, FI_DIRTY_INODE)\n- umount\n- kill_f2fs_super\n- kill_block_super\n- generic_shutdown_super\n- sync_filesystem\n: sb is readonly, skip sync_filesystem()\n- evict_inodes\n- iput\n- f2fs_evict_inode\n- f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE))\n: trigger kernel panic\nWhen we try to repair i_current_depth in readonly filesystem, let's\nskip dirty inode to avoid panic in later f2fs_evict_inode().

See more information about CVE-2024-42297 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	5.5
Vector String:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality:	None
Integrity:	None
Availability:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12780	2024-10-11
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12782	2024-10-14
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12868	2024-12-06
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12780	2024-10-11
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12782	2024-10-14
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12815	2024-11-11
Oracle Linux version 9 (kernel-uek)	ELSA-2024-12815	2024-11-11