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CVE-2022-50442— fs/ntfs3: Validate buffer length while parsing index

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，该漏洞源于解析索引时未验证缓冲区长度，可能导致越界内存访问。

CVSS 8.4 · High EPSS 0.17% · P6 Updated Aug 15, 2026

Possible ATT&CK Techniques 2 AI

T1068 · Exploitation for Privilege Escalation T1203 · Exploitation for Client Execution

Affected Version Matrix 10

Vendor	Product	Version Range	Status
Linux	Linux	`82cae269cfa953032fbb8980a7d554d60fb00b17< 3cd9e5b41b83bb57ac3cf9888f9fef2a6ef8ed96`	affected
		`82cae269cfa953032fbb8980a7d554d60fb00b17< b15374365c9d10445ea7d66cdf885457a0223fc2`	affected
		`82cae269cfa953032fbb8980a7d554d60fb00b17< 3f6f75e8863f41c8b3dbfd9d99e3963aaca42601`	affected
		`82cae269cfa953032fbb8980a7d554d60fb00b17< 4d42ecda239cc13738d6fd84d098a32e67b368b9`	affected
		`5.15`	affected
		`< 5.15`	unaffected
		`5.15.87≤ 5.15.*`	unaffected
		`6.0.17≤ 6.0.*`	unaffected
… +2 more rows

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I. Basic Information for CVE-2022-50442

Vulnerability Information

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Vulnerability Title

fs/ntfs3: Validate buffer length while parsing index

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Validate buffer length while parsing index indx_read is called when we have some NTFS directory operations that need more information from the index buffers. This adds a sanity check to make sure the returned index buffer length is legit, or we may have some out-of-bound memory accesses. [ 560.897595] BUG: KASAN: slab-out-of-bounds in hdr_find_e.isra.0+0x10c/0x320 [ 560.898321] Read of size 2 at addr ffff888009497238 by task exp/245 [ 560.898760] [ 560.899129] CPU: 0 PID: 245 Comm: exp Not tainted 6.0.0-rc6 #37 [ 560.899505] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [ 560.900170] Call Trace: [ 560.900407] <TASK> [ 560.900732] dump_stack_lvl+0x49/0x63 [ 560.901108] print_report.cold+0xf5/0x689 [ 560.901395] ? hdr_find_e.isra.0+0x10c/0x320 [ 560.901716] kasan_report+0xa7/0x130 [ 560.901950] ? hdr_find_e.isra.0+0x10c/0x320 [ 560.902208] __asan_load2+0x68/0x90 [ 560.902427] hdr_find_e.isra.0+0x10c/0x320 [ 560.902846] ? cmp_uints+0xe0/0xe0 [ 560.903363] ? cmp_sdh+0x90/0x90 [ 560.903883] ? ntfs_bread_run+0x190/0x190 [ 560.904196] ? rwsem_down_read_slowpath+0x750/0x750 [ 560.904969] ? ntfs_fix_post_read+0xe0/0x130 [ 560.905259] ? __kasan_check_write+0x14/0x20 [ 560.905599] ? up_read+0x1a/0x90 [ 560.905853] ? indx_read+0x22c/0x380 [ 560.906096] indx_find+0x2ef/0x470 [ 560.906352] ? indx_find_buffer+0x2d0/0x2d0 [ 560.906692] ? __kasan_kmalloc+0x88/0xb0 [ 560.906977] dir_search_u+0x196/0x2f0 [ 560.907220] ? ntfs_nls_to_utf16+0x450/0x450 [ 560.907464] ? __kasan_check_write+0x14/0x20 [ 560.907747] ? mutex_lock+0x8f/0xe0 [ 560.907970] ? __mutex_lock_slowpath+0x20/0x20 [ 560.908214] ? kmem_cache_alloc+0x143/0x4b0 [ 560.908459] ntfs_lookup+0xe0/0x100 [ 560.908788] __lookup_slow+0x116/0x220 [ 560.909050] ? lookup_fast+0x1b0/0x1b0 [ 560.909309] ? lookup_fast+0x13f/0x1b0 [ 560.909601] walk_component+0x187/0x230 [ 560.909944] link_path_walk.part.0+0x3f0/0x660 [ 560.910285] ? handle_lookup_down+0x90/0x90 [ 560.910618] ? path_init+0x642/0x6e0 [ 560.911084] ? percpu_counter_add_batch+0x6e/0xf0 [ 560.912559] ? __alloc_file+0x114/0x170 [ 560.913008] path_openat+0x19c/0x1d10 [ 560.913419] ? getname_flags+0x73/0x2b0 [ 560.913815] ? kasan_save_stack+0x3a/0x50 [ 560.914125] ? kasan_save_stack+0x26/0x50 [ 560.914542] ? __kasan_slab_alloc+0x6d/0x90 [ 560.914924] ? kmem_cache_alloc+0x143/0x4b0 [ 560.915339] ? getname_flags+0x73/0x2b0 [ 560.915647] ? getname+0x12/0x20 [ 560.916114] ? __x64_sys_open+0x4c/0x60 [ 560.916460] ? path_lookupat.isra.0+0x230/0x230 [ 560.916867] ? __isolate_free_page+0x2e0/0x2e0 [ 560.917194] do_filp_open+0x15c/0x1f0 [ 560.917448] ? may_open_dev+0x60/0x60 [ 560.917696] ? expand_files+0xa4/0x3a0 [ 560.917923] ? __kasan_check_write+0x14/0x20 [ 560.918185] ? _raw_spin_lock+0x88/0xdb [ 560.918409] ? _raw_spin_lock_irqsave+0x100/0x100 [ 560.918783] ? _find_next_bit+0x4a/0x130 [ 560.919026] ? _raw_spin_unlock+0x19/0x40 [ 560.919276] ? alloc_fd+0x14b/0x2d0 [ 560.919635] do_sys_openat2+0x32a/0x4b0 [ 560.920035] ? file_open_root+0x230/0x230 [ 560.920336] ? __rcu_read_unlock+0x5b/0x280 [ 560.920813] do_sys_open+0x99/0xf0 [ 560.921208] ? filp_open+0x60/0x60 [ 560.921482] ? exit_to_user_mode_prepare+0x49/0x180 [ 560.921867] __x64_sys_open+0x4c/0x60 [ 560.922128] do_syscall_64+0x3b/0x90 [ 560.922369] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 560.923030] RIP: 0033:0x7f7dff2e4469 [ 560.923681] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 088 [ 560.924451] RSP: 002b:00007ffd41a210b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000002 [ 560.925168] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7dff2e4469 [ 560.925655] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ---truncated---

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:N/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

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	82cae269cfa953032fbb8980a7d554d60fb00b17 ~ 3cd9e5b41b83bb57ac3cf9888f9fef2a6ef8ed96	-
Linux	Linux	5.15	-

II. Public POCs for CVE-2022-50442

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2022-50442

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https://www.cve.org/CVERecord?id=CVE-2022-50442

Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total

CVE-2023-53517	9.8 CRITICAL	tipc: do not update mtu if msg_max is too small in mtu negotiation
CVE-2023-53454	8.8 HIGH	HID: multitouch: Correct devm device reference for hidinput input_dev name
CVE-2025-39918	8.8 HIGH	wifi: mt76: fix linked list corruption
CVE-2025-39919	8.8 HIGH	wifi: mt76: mt7996: add missing check for rx wcid entries
CVE-2023-53493	8.4 HIGH	accel/qaic: tighten bounds checking in decode_message()
CVE-2022-50421	7.8 HIGH	rpmsg: char: Avoid double destroy of default endpoint
CVE-2023-53484	7.8 HIGH	lib: cpu_rmap: Avoid use after free on rmap->obj array entries
CVE-2022-50440	7.8 HIGH	drm/vmwgfx: Validate the box size for the snooped cursor
CVE-2023-53490	7.8 HIGH	mptcp: fix disconnect vs accept race
CVE-2022-50454	7.8 HIGH	drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()
CVE-2025-39924	7.8 HIGH	erofs: fix invalid algorithm for encoded extents
CVE-2023-53510	7.8 HIGH	scsi: ufs: core: Fix handling of lrbp->cmd
CVE-2023-53465	7.8 HIGH	soundwire: qcom: fix storing port config out-of-bounds
CVE-2025-39927	7.8 HIGH	ceph: fix race condition validating r_parent before applying state
CVE-2022-50459	7.8 HIGH	scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()
CVE-2022-50437	7.8 HIGH	drm/msm/hdmi: fix memory corruption with too many bridges
CVE-2023-53494	7.8 HIGH	crypto: xts - Handle EBUSY correctly
CVE-2023-53495	7.8 HIGH	net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc()
CVE-2022-50432	7.8 HIGH	kernfs: fix use-after-free in __kernfs_remove
CVE-2022-50423	7.8 HIGH	ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()

Showing top 20 of 169 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux

V. Comments for CVE-2022-50442

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2022-50442— fs/ntfs3: Validate buffer length while parsing index

Quick assessment

Possible ATT&CK Techniques 2 AI

Affected Version Matrix 10

I. Basic Information for CVE-2022-50442

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2022-50442

III. Intelligence Information for CVE-2022-50442

Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2022-50442

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