What is CVE-2026-23302?

CVE-2026-23302 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10, classified as a Race Condition flaw (CWE-362), affecting Linux kernel versions from 4.20 onward and patched in 6.6.136, 6.12.82, 6.18.17 and others. CVE-2026-23302 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23302?

CVE-2026-23302 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-23302?

Yes, CVE-2026-23302 has been patched. Fixed versions include 6.6.136, 6.12.82, 6.18.17 and others. If you are running Linux kernel 4.20 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23302 actively exploited?

CVE-2026-23302 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/362.html

CVE-2026-23302

Medium

In the Linux kernel, the following vulnerability has been resolved: net: annotate data-races around sk->sk_{data_ready,write_space} skmsg (and probably other layers) are changing these pointers while other cpus might read them concurrently. Add corresponding READ_ONCE()/WRITE_ONCE() annotations for UDP, TCP and AF_UNIX.

Package Linux Kernel

Published 2026-03-25

Last modified 2026-05-28

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-362

CVE-2026-23302 is a Race Condition vulnerability

What is Race Condition?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.20 and later are affected. Fixed in 6.6.136, 6.12.82, 6.18.17, 6.19.7, 7.0 and their respective stable series.

Affected from

≥ 4.20

Fixed in

✓ 6.6.136 6.6.x ✓ 6.12.82 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-2026-23302 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/27fccdbcbbfc4651b6f66756e6fa3f52e051ec23
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2ef2b20cf4e04ac8a6ba68493f8780776ff84300
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7ad01905831c815520f1b0486336a03bb7420465
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2026-23302

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2026-03-25

Modified 2026-05-28

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23302?

CVE-2026-23302 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as a Race Condition flaw (CWE-362) . It affects Linux kernel versions from 4.20 onward and has been patched in 6.6.136, 6.12.82, 6.18.17 and others. CVE-2026-23302 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23302?

CVE-2026-23302 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-23302?

Yes — CVE-2026-23302 has been patched. Fixed versions include 6.6.136, 6.12.82, 6.18.17 and others. If you are running Linux kernel 4.20 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23302 actively exploited?

No — CVE-2026-23302 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. View CWE-362 on MITRE CWE →