CVE-2024-44942— f2fs: fix to do sanity check on F2FS_INLINE_DATA flag in inode during GC
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I. Basic Information for CVE-2024-44942
Vulnerability Information
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Vulnerability Title
f2fs: fix to do sanity check on F2FS_INLINE_DATA flag in inode during GC
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on F2FS_INLINE_DATA flag in inode during GC syzbot reports a f2fs bug as below: ------------[ cut here ]------------ kernel BUG at fs/f2fs/inline.c:258! CPU: 1 PID: 34 Comm: kworker/u8:2 Not tainted 6.9.0-rc6-syzkaller-00012-g9e4bc4bcae01 #0 RIP: 0010:f2fs_write_inline_data+0x781/0x790 fs/f2fs/inline.c:258 Call Trace: f2fs_write_single_data_page+0xb65/0x1d60 fs/f2fs/data.c:2834 f2fs_write_cache_pages fs/f2fs/data.c:3133 [inline] __f2fs_write_data_pages fs/f2fs/data.c:3288 [inline] f2fs_write_data_pages+0x1efe/0x3a90 fs/f2fs/data.c:3315 do_writepages+0x35b/0x870 mm/page-writeback.c:2612 __writeback_single_inode+0x165/0x10b0 fs/fs-writeback.c:1650 writeback_sb_inodes+0x905/0x1260 fs/fs-writeback.c:1941 wb_writeback+0x457/0xce0 fs/fs-writeback.c:2117 wb_do_writeback fs/fs-writeback.c:2264 [inline] wb_workfn+0x410/0x1090 fs/fs-writeback.c:2304 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The root cause is: inline_data inode can be fuzzed, so that there may be valid blkaddr in its direct node, once f2fs triggers background GC to migrate the block, it will hit f2fs_bug_on() during dirty page writeback. Let's add sanity check on F2FS_INLINE_DATA flag in inode during GC, so that, it can forbid migrating inline_data inode's data block for fixing.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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，该漏洞源于在GC期间对F2FS_INLINE_DATA标志的inode进行操作时，未进行适当的健全性检查。
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
II. Public POCs for CVE-2024-44942
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Same Patch Batch · Linux · 2024-08-26 · 39 CVEs total
| CVE-2024-44933 | bnxt_en : Fix memory out-of-bounds in bnxt_fill_hw_rss_tbl() | |
| CVE-2024-43908 | drm/amdgpu: Fix the null pointer dereference to ras_manager | |
| CVE-2024-43909 | drm/amdgpu/pm: Fix the null pointer dereference for smu7 | |
| CVE-2024-43910 | bpf: add missing check_func_arg_reg_off() to prevent out-of-bounds memory accesses | |
| CVE-2024-43911 | wifi: mac80211: fix NULL dereference at band check in starting tx ba session | |
| CVE-2024-43912 | wifi: nl80211: disallow setting special AP channel widths | |
| CVE-2024-43913 | nvme: apple: fix device reference counting | |
| CVE-2024-43914 | md/raid5: avoid BUG_ON() while continue reshape after reassembling | |
| CVE-2024-44931 | gpio: prevent potential speculation leaks in gpio_device_get_desc() | |
| CVE-2024-44932 | idpf: fix UAFs when destroying the queues | |
| CVE-2024-43907 | drm/amdgpu/pm: Fix the null pointer dereference in apply_state_adjust_rules | |
| CVE-2024-44934 | net: bridge: mcast: wait for previous gc cycles when removing port | |
| CVE-2024-44935 | sctp: Fix null-ptr-deref in reuseport_add_sock(). | |
| CVE-2024-44936 | power: supply: rt5033: Bring back i2c_set_clientdata | |
| CVE-2024-44937 | platform/x86: intel-vbtn: Protect ACPI notify handler against recursion | |
| CVE-2024-44938 | jfs: Fix shift-out-of-bounds in dbDiscardAG | |
| CVE-2024-44939 | jfs: fix null ptr deref in dtInsertEntry | |
| CVE-2024-44940 | fou: remove warn in gue_gro_receive on unsupported protocol | |
| CVE-2024-44941 | f2fs: fix to cover read extent cache access with lock | |
| CVE-2024-43896 | ASoC: cs-amp-lib: Fix NULL pointer crash if efi.get_variable is NULL |
Showing top 20 of 39 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2024-44942
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