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CVE-2024-42297— f2fs: fix to don't dirty inode for readonly filesystem

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于f2fs在处理只读文件系统的inode时，未能正确处理脏inode，导致内核崩溃。

CVSS 7.8 · High EPSS 0.25% · P14

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 98e4da8ca301e062d79ae168c67e56f3c3de3ce4< 2d2916516577f2239b3377d9e8d12da5e6ccdfcf affected
98e4da8ca301e062d79ae168c67e56f3c3de3ce4< 54162974aea37a8cae00742470a78c7f6bd6f915 affected
98e4da8ca301e062d79ae168c67e56f3c3de3ce4< 54bc4e88447e385c4d4ffa85d93e0dce628fcfa6 affected
98e4da8ca301e062d79ae168c67e56f3c3de3ce4< ec56571b4b146a1cfbedab49d5fcaf19fe8bf4f1 affected
98e4da8ca301e062d79ae168c67e56f3c3de3ce4< 9ce8135accf103f7333af472709125878704fdd4 affected
98e4da8ca301e062d79ae168c67e56f3c3de3ce4< e62ff092a42f4a1bae3b310cf46673b4f3aac3b5 affected
98e4da8ca301e062d79ae168c67e56f3c3de3ce4< 2434344559f6743efb3ac15d11af9a0db9543bd3 affected
98e4da8ca301e062d79ae168c67e56f3c3de3ce4< 192b8fb8d1c8ca3c87366ebbef599fa80bb626b8 affected
… +10 more rows
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I. Basic Information for CVE-2024-42297

Vulnerability Information
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Vulnerability Title
f2fs: fix to don't dirty inode for readonly filesystem
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to don't dirty inode for readonly filesystem syzbot reports f2fs bug as below: kernel BUG at fs/f2fs/inode.c:933! RIP: 0010:f2fs_evict_inode+0x1576/0x1590 fs/f2fs/inode.c:933 Call Trace: evict+0x2a4/0x620 fs/inode.c:664 dispose_list fs/inode.c:697 [inline] evict_inodes+0x5f8/0x690 fs/inode.c:747 generic_shutdown_super+0x9d/0x2c0 fs/super.c:675 kill_block_super+0x44/0x90 fs/super.c:1667 kill_f2fs_super+0x303/0x3b0 fs/f2fs/super.c:4894 deactivate_locked_super+0xc1/0x130 fs/super.c:484 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1256 task_work_run+0x24a/0x300 kernel/task_work.c:180 ptrace_notify+0x2cd/0x380 kernel/signal.c:2399 ptrace_report_syscall include/linux/ptrace.h:411 [inline] ptrace_report_syscall_exit include/linux/ptrace.h:473 [inline] syscall_exit_work kernel/entry/common.c:251 [inline] syscall_exit_to_user_mode_prepare kernel/entry/common.c:278 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x15c/0x280 kernel/entry/common.c:296 do_syscall_64+0x50/0x110 arch/x86/entry/common.c:88 entry_SYSCALL_64_after_hwframe+0x63/0x6b The root cause is: - do_sys_open - f2fs_lookup - __f2fs_find_entry - f2fs_i_depth_write - f2fs_mark_inode_dirty_sync - f2fs_dirty_inode - set_inode_flag(inode, FI_DIRTY_INODE) - umount - kill_f2fs_super - kill_block_super - generic_shutdown_super - sync_filesystem : sb is readonly, skip sync_filesystem() - evict_inodes - iput - f2fs_evict_inode - f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)) : trigger kernel panic When we try to repair i_current_depth in readonly filesystem, let's skip dirty inode to avoid panic in later f2fs_evict_inode().
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于f2fs在处理只读文件系统的inode时，未能正确处理脏inode，导致内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 ~ 2d2916516577f2239b3377d9e8d12da5e6ccdfcf -
Linux Linux 3.8 -

II. Public POCs for CVE-2024-42297

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III. Intelligence Information for CVE-2024-42297

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Other References for CVE-2024-42297 (8)

Same Patch Batch · Linux · 2024-08-17 · 109 CVEs total

CVE-2024-42285 9.8 CRITICAL RDMA/iwcm: Fix a use-after-free related to destroying CM IDs
CVE-2024-42284 9.1 CRITICAL tipc: Return non-zero value from tipc_udp_addr2str() on error
CVE-2024-42318 8.8 HIGH landlock: Don't lose track of restrictions on cred_transfer
CVE-2024-42287 8.8 HIGH scsi: qla2xxx: Complete command early within lock
CVE-2024-43847 8.8 HIGH wifi: ath12k: fix invalid memory access while processing fragmented packets
CVE-2024-43848 8.8 HIGH wifi: mac80211: fix TTLM teardown work
CVE-2024-42279 7.8 HIGH spi: microchip-core: ensure TX and RX FIFOs are empty at start of a transfer
CVE-2024-42299 7.8 HIGH fs/ntfs3: Update log->page_{mask,bits} if log->page_size changed
CVE-2024-42314 7.8 HIGH btrfs: fix extent map use-after-free when adding pages to compressed bio
CVE-2024-43840 7.8 HIGH bpf, arm64: Fix trampoline for BPF_TRAMP_F_CALL_ORIG
CVE-2024-42296 7.8 HIGH f2fs: fix return value of f2fs_convert_inline_inode()
CVE-2024-43832 7.8 HIGH s390/uv: Don't call folio_wait_writeback() without a folio reference
CVE-2024-42293 7.8 HIGH arm64: mm: Fix lockless walks with static and dynamic page-table folding
CVE-2024-43830 7.8 HIGH leds: trigger: Unregister sysfs attributes before calling deactivate()
CVE-2024-42300 7.8 HIGH erofs: fix race in z_erofs_get_gbuf()
CVE-2024-43845 7.8 HIGH udf: Fix bogus checksum computation in udf_rename()
CVE-2024-42288 7.8 HIGH scsi: qla2xxx: Fix for possible memory corruption
CVE-2024-43846 7.8 HIGH lib: objagg: Fix general protection fault
CVE-2024-42280 7.8 HIGH mISDN: Fix a use after free in hfcmulti_tx()
CVE-2024-42311 7.8 HIGH hfs: fix to initialize fields of hfs_inode_info after hfs_alloc_inode()

Showing top 20 of 109 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42297

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