What is CVE-2026-46231?

CVE-2026-46231 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.16.39 onward and patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46231 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46231?

CVE-2026-46231 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-46231?

Yes, CVE-2026-46231 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 3.16.39 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46231 actively exploited?

CVE-2026-46231 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46231

Medium

In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: put backbone reference on failed claim hash insert When batadv_bla_add_claim() fails to insert a new claim into the hash, it leaked a reference to the backbone_gw for which the claim was intended. Call batadv_backbone_gw_put() on the error path to release the reference and avoid leaking the backbone_gw object.

Package Linux Kernel

Published 2026-05-28

Last modified 2026-06-10

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 3.16.39, 4.4.217, 4.7 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

≥ 3.16.39 ≥ 4.4.217 ≥ 4.7

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/0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0

Patch
Kernel Git
https://git.kernel.org/stable/c/2888c9a154123db0254ae4fb9bea570c7e1f2e06

Patch
Kernel Git
https://git.kernel.org/stable/c/65419eb4259a26a3cd3f56fa0e3b3c113bf8c256

Patch
Kernel Git
https://git.kernel.org/stable/c/6c8b68a7ed667a63aa603ba4d3a7088be143007e

Patch
Kernel Git
https://git.kernel.org/stable/c/769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-46231

Severity Medium

CVSS score 5.5 / 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-2026-46231?

CVE-2026-46231 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.16.39 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46231 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46231?

CVE-2026-46231 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-46231?

Yes. CVE-2026-46231 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 3.16.39 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46231 actively exploited?

No. CVE-2026-46231 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.