CVE-2026-46062

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Source
https://cve.org/CVERecord?id=CVE-2026-46062
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46062.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-46062
Downstream
Related
Published
2026-05-27T12:57:24.416Z
Modified
2026-06-18T03:56:48.718736714Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
ntfs3: fix integer overflow in run_unpack() volume boundary check
Details

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 checkaddoverflow() as is already done for the adjacent prevlcn + dlcn and vcn64 + len checks added by commit 3ac37e100385 ("ntfs3: Fix integer overflow in rununpack()").

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

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46062.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
82cae269cfa953032fbb8980a7d554d60fb00b17
Fixed
424858f9a048057bb8f834bfe03d18f5e477e747
Fixed
e73cd5aed6b15e55c1c47577bdb473b5e88d6a69
Fixed
a954061b334ec67c79ae9d0cadd83fa521396487
Fixed
60dab3e2931f3d792438a77a6cb0cb731c43300b
Fixed
f1af27cec07a9fd0847166bdb23c99e86b05bfdc
Fixed
6175d09c23bec4b60860ee9a0170308ff4b56e10
Fixed
984a415f019536ea2d24de9010744e5302a9a948

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46062.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.15.0
Fixed
5.15.209
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.175
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.140
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.86
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.27
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.0.4

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46062.json"