What is CVE-2026-23245?

CVE-2026-23245 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 5.8 onward and patched in 5.10.253, 6.1.167, 6.6.130 and others. CVE-2026-23245 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23245?

CVE-2026-23245 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-23245?

Yes, CVE-2026-23245 has been patched. Fixed versions include 5.10.253, 6.1.167, 6.6.130 and others. If you are running Linux kernel 5.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23245 actively exploited?

CVE-2026-23245 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23245

High

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_gate: snapshot parameters with RCU on replace The gate action can be replaced while the hrtimer callback or dump path is walking the schedule list. Convert the parameters to an RCU-protected snapshot and swap updates under tcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits the entry list, preserve the existing schedule so the effective state is unchanged.

Package Linux Kernel

Published 2026-03-18

Last modified 2026-05-21

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 5.8 and later are affected. Fixed in 5.10.253, 6.1.167, 6.6.130, 6.12.78, 6.18.18, 6.19.8, 7.0 and their respective stable series.

Affected from

≥ 5.8

Fixed in

✓ 5.10.253 5.10.x ✓ 6.1.167 6.1.x ✓ 6.6.130 6.6.x ✓ 6.12.78 6.12.x ✓ 6.18.18 6.18.x ✓ 6.19.8 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-23245 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/035d0d09d5ab3ed3e93d18cde2b562a6719eea23
Patch
Kernel patch commit
https://git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351
Patch

7 patch commits total View all on NVD

Details

CVE ID CVE-2026-23245

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-03-18

Modified 2026-05-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23245?

CVE-2026-23245 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 5.8 onward and has been patched in 5.10.253, 6.1.167, 6.6.130 and others. CVE-2026-23245 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23245?

CVE-2026-23245 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-23245?

Yes — CVE-2026-23245 has been patched. Fixed versions include 5.10.253, 6.1.167, 6.6.130 and others. If you are running Linux kernel 5.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23245 actively exploited?

No — CVE-2026-23245 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.