What is CVE-2026-23347?

CVE-2026-23347 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 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-2026-23347 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23347?

CVE-2026-23347 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-2026-23347?

Yes, CVE-2026-23347 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-2026-23347 actively exploited?

CVE-2026-23347 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23347

Medium

In the Linux kernel, the following vulnerability has been resolved: can: usb: f81604: correctly anchor the urb in the read bulk callback When submitting an urb, that is using the anchor pattern, it needs to be anchored before submitting it otherwise it could be leaked if usb_kill_anchored_urbs() is called. This logic is correctly done elsewhere in the driver, except in the read bulk callback so do that here also.

Package Linux Kernel

Published 2026-03-25

Last modified 2026-04-24

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 6.5 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-2026-23347 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/54ee74307165b348b2fddcd7942eb48fb4ee1237
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7724645c4792914cd07f36718816c5369cc57970
Patch
Kernel patch commit
https://git.kernel.org/stable/c/952caa5da10bed22be09612433964f6877ba0dde
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2026-23347

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-03-25

Modified 2026-04-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23347?

CVE-2026-23347 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 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-2026-23347 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23347?

CVE-2026-23347 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-2026-23347?

Yes — CVE-2026-23347 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-2026-23347 actively exploited?

No — CVE-2026-23347 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.