What is CVE-2026-23246?

CVE-2026-23246 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10, affecting Linux kernel versions from 6.5 onward and patched in 6.6.130, 6.12.77, 6.18.17 and others. CVE-2026-23246 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23246?

CVE-2026-23246 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-2026-23246?

Yes, CVE-2026-23246 has been patched. Fixed versions include 6.6.130, 6.12.77, 6.18.17 and others. If you are running Linux kernel 6.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23246 actively exploited?

CVE-2026-23246 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23246

High

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration link_id is taken from the ML Reconfiguration element (control & 0x000f), so it can be 0..15. link_removal_timeout[] has IEEE80211_MLD_MAX_NUM_LINKS (15) elements, so index 15 is out-of-bounds. Skip subelements with link_id >= IEEE80211_MLD_MAX_NUM_LINKS to avoid a stack out-of-bounds write.

Package Linux Kernel

Published 2026-03-18

Last modified 2026-05-22

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-129

CVE-2026-23246 is classified as CWE-129

See CWE-129 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.5 and later are affected. Fixed in 6.6.130, 6.12.77, 6.18.17, 6.19.7, 7.0 and their respective stable series.

Affected from

≥ 6.5

Fixed in

✓ 6.6.130 6.6.x ✓ 6.12.77 6.12.x ✓ 6.18.17 6.18.x ✓ 6.19.7 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-23246 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/162d331d833dc73a3e905a24c44dd33732af1fc5
Patch
Kernel patch commit
https://git.kernel.org/stable/c/650981e718e68005ca2760a6358134b8a98ebea4
Patch
Kernel patch commit
https://git.kernel.org/stable/c/bfde158d5d1322c0c2df398a8d1ccce04943be2e
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2026-23246

Severity High

CVSS score 8.8 / 10

CVSS version 3.1

Published 2026-03-18

Modified 2026-05-22

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23246?

CVE-2026-23246 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10 . It affects Linux kernel versions from 6.5 onward and has been patched in 6.6.130, 6.12.77, 6.18.17 and others. CVE-2026-23246 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23246?

CVE-2026-23246 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-2026-23246?

Yes — CVE-2026-23246 has been patched. Fixed versions include 6.6.130, 6.12.77, 6.18.17 and others. If you are running Linux kernel 6.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23246 actively exploited?

No — CVE-2026-23246 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.