What is CVE-2026-46191?

CVE-2026-46191 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Out-of-bounds Read flaw (CWE-125), affecting Linux kernel versions from 2.6.15 onward and patched in 5.10.259, 5.15.210, 6.1.176 and others. CVE-2026-46191 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46191?

CVE-2026-46191 has a CVSS score of 7.1 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:N/A:H.

Is there a patch available for CVE-2026-46191?

Yes, CVE-2026-46191 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.176 and others. If you are running Linux kernel 2.6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46191 actively exploited?

CVE-2026-46191 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2026-46191

High

In the Linux kernel, the following vulnerability has been resolved: fbcon: Avoid OOB font access if console rotation fails Clear the font buffer if the reallocation during console rotation fails in fbcon_rotate_font(). The putcs implementations for the rotated buffer will return early in this case. See [1] for an example. Currently, fbcon_rotate_font() keeps the old buffer, which is too small for the rotated font. Printing to the rotated console with a high-enough character code will overflow the font buffer. v2: - fix typos in commit message

Package Linux Kernel

Published 2026-05-28

Last modified 2026-06-19

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-125

CVE-2026-46191 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

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

Affected versions

Linux kernel versions 2.6.15 and later are affected. Fixed in 5.10.259, 5.15.210, 6.1.176, 6.6.140, 6.12.90, 6.18.32, 7.0.7, 7.1 and their respective stable series.

Affected from

≥ 2.6.15

Fixed in

✓ 5.10.259 5.10.x ✓ 5.15.210 5.15.x ✓ 6.1.176 6.1.x ✓ 6.6.140 6.6.x ✓ 6.12.90 6.12.x ✓ 6.18.32 6.18.x ✓ 7.0.7 7.0.x ✓ 7.1

References

8 total

Kernel Git
https://git.kernel.org/stable/c/594973a2e54924d8ba31c9faac669fc1ba6fcb80

Patch
Kernel Git
https://git.kernel.org/stable/c/7105d9f1387d63b15c9a860674fc92c959181f2f

Patch
Kernel Git
https://git.kernel.org/stable/c/ab6c34b9829d5de03f1d08a47a2253729a6e7e27

Patch
Kernel Git
https://git.kernel.org/stable/c/b44cc78ff46b96e72d333a3be6aaaa0a14797263

Patch
Kernel Git
https://git.kernel.org/stable/c/e4ef723d8975a2694cc90733a6b888a5e2841842

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-46191

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-19

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46191?

CVE-2026-46191 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . It affects Linux kernel versions from 2.6.15 onward and has been patched in 5.10.259, 5.15.210, 6.1.176 and others. CVE-2026-46191 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46191?

CVE-2026-46191 has a CVSS score of 7.1 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:N/A:H.
Is there a patch available for CVE-2026-46191?

Yes. CVE-2026-46191 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.176 and others. If you are running Linux kernel 2.6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46191 actively exploited?

No. CVE-2026-46191 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.