CVE-2026-46072 Details
Description
In the Linux kernel, the following vulnerability has been resolved: ntfs3: add buffer boundary checks to run_unpack() run_unpack() checks `run_buf < run_last` at the top of the while loop but then reads size_size and offset_size bytes via run_unpack_s64() without verifying they fit within the remaining buffer. A crafted NTFS image with truncated run data in an MFT attribute triggers an OOB heap read of up to 15 bytes when the filesystem is mounted. Add boundary checks before each run_unpack_s64() call to ensure the declared field size does not exceed the remaining buffer. Found by fuzzing with a source-patched harness (LibAFL + QEMU).
A vulnerability in the Linux kernel's NTFS3 file system implementation allows for an out-of-bounds heap read of up to 15 bytes. This issue arises in the 'run_unpack()' function, which processes run-length encoded data from NTFS Master File Table attributes. The vulnerability is triggered by a crafted NTFS image with truncated run data, leading to improper buffer size handling. The issue has been addressed by adding buffer boundary checks to ensure that the read operations do not exceed the available data.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for upgrading the Linux kernel can be found in the official Linux documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/41aadf5cb482793a24e05aa136224e179a778586 | kernel.org | Patch |
| https://git.kernel.org/stable/c/425de2aba0d061b3e715d51a3b1992c112ed5b99 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b62567bca47408e6739dee75f02a2113548af875 | kernel.org | Patch |
| https://git.kernel.org/stable/c/bbad75336870b51b81979b97613746237fcb02fe | kernel.org | Patch |
| https://git.kernel.org/stable/c/bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d3012690a7065d9ca86521a525ad11e8af491d45 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e64f7dfcaff79e7dfff9121a382dd77f9b462f62 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.15, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.140 >= 6.7, < 6.12.86 >= 6.13, < 6.18.27 >= 6.19, < 7.0.4 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 24, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 1, 2026 | CVE Modified | kernel.org |
| May 27, 2026 | New CVE Received | kernel.org |