What is CVE-2026-46062?

CVE-2026-46062 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Integer Overflow flaw (CWE-190), affecting Linux kernel versions from 5.15 onward and patched in 5.15.209, 6.1.175, 6.6.140 and others. CVE-2026-46062 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46062?

CVE-2026-46062 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-46062?

Yes, CVE-2026-46062 has been patched. Fixed versions include 5.15.209, 6.1.175, 6.6.140 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46062 actively exploited?

CVE-2026-46062 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Integer Overflow (CWE-190)?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/190.html

CVE-2026-46062

High

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).

Package Linux Kernel

Published 2026-05-27

Last modified 2026-06-16

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness type

CWE-190

CVE-2026-46062 is a Integer Overflow vulnerability

What is Integer Overflow?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.15 and later are affected. Fixed in 5.15.209, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4, 7.1 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.209 5.15.x ✓ 6.1.175 6.1.x ✓ 6.6.140 6.6.x ✓ 6.12.86 6.12.x ✓ 6.18.27 6.18.x ✓ 7.0.4 7.0.x ✓ 7.1

References

7 total

Kernel Git
https://git.kernel.org/stable/c/424858f9a048057bb8f834bfe03d18f5e477e747

Patch
Kernel Git
https://git.kernel.org/stable/c/60dab3e2931f3d792438a77a6cb0cb731c43300b

Patch
Kernel Git
https://git.kernel.org/stable/c/6175d09c23bec4b60860ee9a0170308ff4b56e10

Patch
Kernel Git
https://git.kernel.org/stable/c/984a415f019536ea2d24de9010744e5302a9a948

Patch
Kernel Git
https://git.kernel.org/stable/c/a954061b334ec67c79ae9d0cadd83fa521396487

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2026-46062

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-05-27

Modified 2026-06-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46062?

CVE-2026-46062 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Integer Overflow flaw (CWE-190) . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.209, 6.1.175, 6.6.140 and others. CVE-2026-46062 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46062?

CVE-2026-46062 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-46062?

Yes. CVE-2026-46062 has been patched. Fixed versions include 5.15.209, 6.1.175, 6.6.140 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46062 actively exploited?

No. CVE-2026-46062 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.