CVE-2025-40067
fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
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.
Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2025-04-16 CVE Reserved
- 2025-10-28 CVE Published
- 2026-04-07 EPSS Updated
- 2026-05-11 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (9)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/b35a50d639ca5259466ef5fea85529bb4fb17d5b | Vuln. Introduced | |
| https://git.kernel.org/stable/c/3ed2cc6a6e93fbeb8c0cafce1e7fb1f64a331dcc | Vuln. Introduced | |
| https://git.kernel.org/stable/c/d99208b91933fd2a58ed9ed321af07dacd06ddc3 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/358d4f821c03add421a4c49290538a705852ccf1 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/a285395020780adac1ffbc844069c3d700bf007a | Vuln. Introduced |
| URL | Date | SRC |
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| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.6.102 < 6.6.112 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6.102 < 6.6.112" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.12.42 < 6.12.53 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.12.42 < 6.12.53" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.17 < 6.17.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.17 < 6.17.3" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.17 < 6.18 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.17 < 6.18" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 6.15.10 Search vendor "Linux" for product "Linux Kernel" and version "6.15.10" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 6.16.1 Search vendor "Linux" for product "Linux Kernel" and version "6.16.1" | en |
Affected
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