What is CVE-2026-23313?

CVE-2026-23313 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.2 onward and patched in 6.6.136, 6.12.77, 6.18.17 and others. CVE-2026-23313 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23313?

CVE-2026-23313 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-2026-23313?

Yes, CVE-2026-23313 has been patched. Fixed versions include 6.6.136, 6.12.77, 6.18.17 and others. If you are running Linux kernel 6.2 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23313 actively exploited?

CVE-2026-23313 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23313

Medium

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix preempt count leak in napi poll tracepoint Using get_cpu() in the tracepoint assignment causes an obvious preempt count leak because nothing invokes put_cpu() to undo it: softirq: huh, entered softirq 3 NET_RX with preempt_count 00000100, exited with 00000101? This clearly has seen a lot of testing in the last 3+ years... Use smp_processor_id() instead.

Package Linux Kernel

Published 2026-03-25

Last modified 2026-05-26

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 6.2 and later are affected. Fixed in 6.6.136, 6.12.77, 6.18.17, 6.19.7, 7.0 and their respective stable series.

Affected from

≥ 6.2

Fixed in

✓ 6.6.136 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-2026-23313 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/4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9
Patch
Kernel patch commit
https://git.kernel.org/stable/c/9e0f091821571f0da387462803ee42f0bb157582
Patch
Kernel patch commit
https://git.kernel.org/stable/c/b7e91827e1cf89cd34ad11dc8f8c010b70ab786e
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2026-23313

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-03-25

Modified 2026-05-26

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23313?

CVE-2026-23313 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.2 onward and has been patched in 6.6.136, 6.12.77, 6.18.17 and others. CVE-2026-23313 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23313?

CVE-2026-23313 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-2026-23313?

Yes — CVE-2026-23313 has been patched. Fixed versions include 6.6.136, 6.12.77, 6.18.17 and others. If you are running Linux kernel 6.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23313 actively exploited?

No — CVE-2026-23313 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.