What is CVE-2026-23280?

CVE-2026-23280 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.18 onward and patched in 6.18.17, 6.19.7 and 7.0. CVE-2026-23280 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23280?

CVE-2026-23280 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-2026-23280?

Yes, CVE-2026-23280 has been patched. Fixed versions include 6.18.17, 6.19.7 and 7.0. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23280 actively exploited?

CVE-2026-23280 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23280

High

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Prevent ubuf size overflow The ubuf size calculation may overflow, resulting in an undersized allocation and possible memory corruption. Use check_add_overflow() helpers to validate the size calculation before allocation.

Package Linux Kernel

Published 2026-03-25

Last modified 2026-05-22

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 6.18 and later are affected. Fixed in 6.18.17, 6.19.7, 7.0 and their respective stable series.

Affected from

≥ 6.18

Fixed in

✓ 6.18.17 6.18.x ✓ 6.19.7 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-23280 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/03808abb1d868aed7478a11a82e5bb4b3f1ca6d6
Patch
Kernel patch commit
https://git.kernel.org/stable/c/1500b31db94374a6669e73ce94d6f71cf8e85e06
Patch
Kernel patch commit
https://git.kernel.org/stable/c/972bf4a23478fcb247b4f507d47a584bc8aea5bd
Patch

Details

CVE ID CVE-2026-23280

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-03-25

Modified 2026-05-22

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23280?

CVE-2026-23280 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.18 onward and has been patched in 6.18.17, 6.19.7 and 7.0. CVE-2026-23280 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23280?

CVE-2026-23280 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-2026-23280?

Yes — CVE-2026-23280 has been patched. Fixed versions include 6.18.17, 6.19.7 and 7.0. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23280 actively exploited?

No — CVE-2026-23280 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.