What is CVE-2026-46198?

CVE-2026-46198 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10, classified as a Integer Overflow flaw (CWE-190), affecting Linux kernel versions from 2.6.38 onward and patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46198 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46198?

CVE-2026-46198 has a CVSS score of 8.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-46198?

Yes, CVE-2026-46198 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 2.6.38 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46198 actively exploited?

CVE-2026-46198 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-2026-46198

High

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix integer overflow on buff_pos Fixing an integer overflow present in batadv_iv_ogm_send_to_if. The size check is done using the int type in batadv_iv_ogm_aggr_packet whereas the buff_pos variable uses the s16 type. This could lead to an out-of-bound read.

Package Linux Kernel

Published 2026-05-28

Last modified 2026-06-10

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

8.8

out of 10

High

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-190

CVE-2026-46198 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 2.6.38 and later are affected. Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.90, 6.18.32, 7.0.9, 7.1 and their respective stable series.

Affected from

≥ 2.6.38

Fixed in

✓ 5.10.258 5.10.x ✓ 5.15.209 5.15.x ✓ 6.1.175 6.1.x ✓ 6.6.140 6.6.x ✓ 6.12.90 6.12.x ✓ 6.18.32 6.18.x ✓ 7.0.9 7.0.x ✓ 7.1

References

8 total

Kernel Git
https://git.kernel.org/stable/c/0799e5943611006b346b8813c7daf7dd5aa26bfd

Patch
Kernel Git
https://git.kernel.org/stable/c/10bb1f366d884d506c38a947b43026a75d1afe9a

Patch
Kernel Git
https://git.kernel.org/stable/c/867cd090760e8f5cd206f387b47ff9c56fac04e9

Patch
Kernel Git
https://git.kernel.org/stable/c/96c9c0ed9a9579a9085765aceaa4556a6666eb82

Patch
Kernel Git
https://git.kernel.org/stable/c/974542d1efc48b7e9fe16184e647615cba39969b

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-46198

Severity High

CVSS score 8.8 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-10

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46198?

CVE-2026-46198 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10 , classified as an Integer Overflow flaw (CWE-190) . It affects Linux kernel versions from 2.6.38 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46198 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46198?

CVE-2026-46198 has a CVSS score of 8.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-46198?

Yes. CVE-2026-46198 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 2.6.38 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46198 actively exploited?

No. CVE-2026-46198 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.