In the Linux kernel, the following vulnerability has been resolved:

ntfs3: fix integer overflow in run_unpack() volume boundary check

The volume boundary check `lcn + len > sbi->used.bitmap.nbits` uses raw
addition which can wrap around for large lcn and len values, bypassing
the validation. Use check_add_overflow() as is already done for the
adjacent prev_lcn + dlcn and vcn64 + len checks added by commit
3ac37e100385 ("ntfs3: Fix integer overflow in run_unpack()").

Found by fuzzing with a source-patched harness (LibAFL + QEMU).

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
82cae269cfa953032fbb8980a7d554d60fb00b17 affected < a954061b334ec67c79ae9d0cadd83fa521396487
82cae269cfa953032fbb8980a7d554d60fb00b17 affected < 60dab3e2931f3d792438a77a6cb0cb731c43300b
82cae269cfa953032fbb8980a7d554d60fb00b17 affected < f1af27cec07a9fd0847166bdb23c99e86b05bfdc
82cae269cfa953032fbb8980a7d554d60fb00b17 affected < 6175d09c23bec4b60860ee9a0170308ff4b56e10
82cae269cfa953032fbb8980a7d554d60fb00b17 affected < 984a415f019536ea2d24de9010744e5302a9a948
Linux Linux affected
Version Status Constraints
5.15 affected —
0 unaffected < 5.15
6.6.140 unaffected ≤ 6.6.*
6.12.86 unaffected ≤ 6.12.*
6.18.27 unaffected ≤ 6.18.*
7.0.4 unaffected ≤ 7.0.*
7.1-rc1 unaffected ≤ *

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Fixes

Solution

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Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/60dab3e2931f3d792438a77a6cb0cb731c43300b cve-icon cve-icon
https://git.kernel.org/stable/c/6175d09c23bec4b60860ee9a0170308ff4b56e10 cve-icon cve-icon
https://git.kernel.org/stable/c/984a415f019536ea2d24de9010744e5302a9a948 cve-icon cve-icon
https://git.kernel.org/stable/c/a954061b334ec67c79ae9d0cadd83fa521396487 cve-icon cve-icon
https://git.kernel.org/stable/c/f1af27cec07a9fd0847166bdb23c99e86b05bfdc cve-icon cve-icon
History

Wed, 27 May 2026 14:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix integer overflow in run_unpack() volume boundary check The volume boundary check `lcn + len > sbi->used.bitmap.nbits` uses raw addition which can wrap around for large lcn and len values, bypassing the validation. Use check_add_overflow() as is already done for the adjacent prev_lcn + dlcn and vcn64 + len checks added by commit 3ac37e100385 ("ntfs3: Fix integer overflow in run_unpack()"). Found by fuzzing with a source-patched harness (LibAFL + QEMU).
Title ntfs3: fix integer overflow in run_unpack() volume boundary check
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-05-27T12:57:24.416Z

Reserved: 2026-05-13T15:03:33.095Z

Link: CVE-2026-46062

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-27T14:17:26.063

Modified: 2026-05-27T14:48:03.013

Link: CVE-2026-46062

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.