What is CVE-2026-46068?

CVE-2026-46068 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Out-of-bounds Write flaw (CWE-787), affecting Linux kernel versions from 4.2 onward and patched in 6.6.141, 6.12.88, 6.18.27 and others. CVE-2026-46068 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46068?

CVE-2026-46068 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:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-46068?

Yes, CVE-2026-46068 has been patched. Fixed versions include 6.6.141, 6.12.88, 6.18.27 and others. If you are running Linux kernel 4.2 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46068 actively exploited?

CVE-2026-46068 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/787.html

CVE-2026-46068

High

In the Linux kernel, the following vulnerability has been resolved: crypto: nx - fix bounce buffer leaks in nx842_crypto_{alloc,free}_ctx The bounce buffers are allocated with __get_free_pages() using BOUNCE_BUFFER_ORDER (order 2 = 4 pages), but both the allocation error path and nx842_crypto_free_ctx() release the buffers with free_page(). Use free_pages() with the matching order instead.

Package Linux Kernel

Published 2026-05-27

Last modified 2026-06-24

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

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-787

CVE-2026-46068 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.2 and later are affected. Fixed in 6.6.141, 6.12.88, 6.18.27, 7.0.4, 7.1 and their respective stable series.

Affected from

≥ 4.2

Fixed in

✓ 6.6.141 6.6.x ✓ 6.12.88 6.12.x ✓ 6.18.27 6.18.x ✓ 7.0.4 7.0.x ✓ 7.1

References

5 total

Kernel Git
https://git.kernel.org/stable/c/5c07962fed66e1238fad7635fa150570bd38b4c5

Patch
Kernel Git
https://git.kernel.org/stable/c/80fd99d7c30ea889662d21f1b44d8fea4c83138d

Patch
Kernel Git
https://git.kernel.org/stable/c/910bb34b801d39794e656f7d48414844b2bd354e

Patch
Kernel Git
https://git.kernel.org/stable/c/adb3faf2db1a66d0f015b44ac909a32dfc7f2f9c

Patch
Kernel Git
https://git.kernel.org/stable/c/f17a4850d1ce7c11cba8b1830b9bfedfede878bb

Patch

Details

CVE ID CVE-2026-46068

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-05-27

Modified 2026-06-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46068?

CVE-2026-46068 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . It affects Linux kernel versions from 4.2 onward and has been patched in 6.6.141, 6.12.88, 6.18.27 and others. CVE-2026-46068 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46068?

CVE-2026-46068 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:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-46068?

Yes. CVE-2026-46068 has been patched. Fixed versions include 6.6.141, 6.12.88, 6.18.27 and others. If you are running Linux kernel 4.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46068 actively exploited?

No. CVE-2026-46068 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.