What is CVE-2026-46212?

CVE-2026-46212 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10, affecting Linux kernel versions from 3.5 onward and patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46212 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46212?

CVE-2026-46212 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-2026-46212?

Yes, CVE-2026-46212 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 3.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46212 actively exploited?

CVE-2026-46212 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46212

High

In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: prevent use-after-free when deleting claims When batadv_bla_del_backbone_claims() removes all claims for a backbone, it does this by dropping the link entry in the hash list. This list entry itself was one of the references which need to be dropped at the same time via batadv_claim_put(). But the batadv_claim_put() must not be done before the last access to the claim object in this function. Otherwise the claim might be freed already by the batadv_claim_release() function before the list entry was dropped.

Package Linux Kernel

Published 2026-05-28

Last modified 2026-06-01

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

Affected versions

Linux kernel versions 3.5 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-rc4 and their respective stable series.

Affected from

≥ 3.5

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-rc4

References

The following references provide additional information about CVE-2026-46212 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401
Patch
Kernel patch commit
https://git.kernel.org/stable/c/0cc9847c64cb6e61118bc78c9187c8209a7197fa
Patch
Kernel patch commit
https://git.kernel.org/stable/c/1d4b241482d9025c537afb3c7c8419c72c0e0c82
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2026-46212

Severity High

CVSS score 8.8 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46212?

CVE-2026-46212 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10 . It affects Linux kernel versions from 3.5 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46212 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46212?

CVE-2026-46212 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-2026-46212?

Yes — CVE-2026-46212 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 3.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46212 actively exploited?

No — CVE-2026-46212 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.