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CVE-2025-40067— fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist

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，该漏洞源于未验证$BITMAP属性是否为空，可能导致索引分配不当。

CVSS 7.8 · High EPSS 0.17% · P5

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux b35a50d639ca5259466ef5fea85529bb4fb17d5b< 978aac54e93ea35aab20b32ae393d3d33964e7ae affected
3ed2cc6a6e93fbeb8c0cafce1e7fb1f64a331dcc< be66551da203862c689c12e1d35ce87217c017c1 affected
d99208b91933fd2a58ed9ed321af07dacd06ddc3< 039ddf353cc33f6546a87ec1ac3210637d714bec affected
d99208b91933fd2a58ed9ed321af07dacd06ddc3< 0dc7117da8f92dd5fe077d712a756eccbe377d40 affected
358d4f821c03add421a4c49290538a705852ccf1 affected
a285395020780adac1ffbc844069c3d700bf007a affected
6.6.102< 6.6.112 affected
6.12.42< 6.12.53 affected
… +8 more rows
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I. Basic Information for CVE-2025-40067

Vulnerability Information
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Vulnerability Title
fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist Index allocation requires at least one bit in the $BITMAP attribute to track usage of index entries. If the bitmap is empty while index blocks are already present, this reflects on-disk corruption. syzbot triggered this condition using a malformed NTFS image. During a rename() operation involving a long filename (which spans multiple index entries), the empty bitmap allowed the name to be added without valid tracking. Subsequent deletion of the original entry failed with -ENOENT, due to unexpected index state. Reject such cases by verifying that the bitmap is not empty when index blocks exist.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未验证$BITMAP属性是否为空，可能导致索引分配不当。
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 b35a50d639ca5259466ef5fea85529bb4fb17d5b ~ 978aac54e93ea35aab20b32ae393d3d33964e7ae -
Linux Linux 6.17 -

II. Public POCs for CVE-2025-40067

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III. Intelligence Information for CVE-2025-40067

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Same Patch Batch · Linux · 2025-10-28 · 58 CVEs total

CVE-2025-40074 9.8 CRITICAL ipv4: start using dst_dev_rcu()
CVE-2025-40043 8.8 HIGH net: nfc: nci: Add parameter validation for packet data
CVE-2025-40039 8.8 HIGH ksmbd: Fix race condition in RPC handle list access
CVE-2025-40058 8.8 HIGH iommu/vt-d: Disallow dirty tracking if incoherent page walk
CVE-2025-40046 8.6 HIGH io_uring/zcrx: fix overshooting recv limit
CVE-2025-40068 8.4 HIGH fs: ntfs3: Fix integer overflow in run_unpack()
CVE-2025-40075 8.1 HIGH tcp_metrics: use dst_dev_net_rcu()
CVE-2025-40026 7.9 HIGH KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
CVE-2025-40079 7.8 HIGH riscv, bpf: Sign extend struct ops return values properly
CVE-2025-40061 7.8 HIGH RDMA/rxe: Fix race in do_task() when draining
CVE-2025-40028 7.8 HIGH binder: fix double-free in dbitmap
CVE-2025-40064 7.8 HIGH smc: Fix use-after-free in __pnet_find_base_ndev().
CVE-2025-40069 7.8 HIGH drm/msm: Fix obj leak in VM_BIND error path
CVE-2025-40027 7.8 HIGH net/9p: fix double req put in p9_fd_cancelled
CVE-2025-40025 7.8 HIGH f2fs: fix to do sanity check on node footer for non inode dnode
CVE-2025-40044 7.8 HIGH fs: udf: fix OOB read in lengthAllocDescs handling
CVE-2025-40045 7.8 HIGH ASoC: codecs: wcd937x: set the comp soundwire port correctly
CVE-2025-40051 7.8 HIGH vhost: vringh: Modify the return value check
CVE-2025-40047 7.8 HIGH io_uring/waitid: always prune wait queue entry in io_waitid_wait()
CVE-2025-40041 7.8 HIGH LoongArch: BPF: Sign-extend struct ops return values properly

Showing top 20 of 58 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40067

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