What is the CVSS score of EUVD-2026-18671?

EUVD-2026-18671 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Is there a patch available for EUVD-2026-18671?

Yes, a patch is available for EUVD-2026-18671. Update the affected software to the latest version immediately.

Linux EUVD-2026-18671

| CVE-2026-23433 MEDIUM

NULL Pointer Dereference (CWE-476)

2026-04-03 Linux

Denial Of Service Linux Null Pointer Dereference Red Hat Suse

5.5

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVSS changed

Apr 23, 2026 - 21:11 NVD

5.5 (MEDIUM)

Patch available

Apr 16, 2026 - 05:29 EUVD

4ad79c874e53ebb7fe3b8ae7ac6c858a2121f415

EUVD ID Assigned

Apr 03, 2026 - 15:30 euvd

EUVD-2026-18671

Analysis Generated

Apr 03, 2026 - 15:30 vuln.today

CVE Published

Apr 03, 2026 - 15:15 nvd

N/A

DescriptionNVD

In the Linux kernel, the following vulnerability has been resolved:

arm_mpam: Fix null pointer dereference when restoring bandwidth counters

When an MSC supporting memory bandwidth monitoring is brought offline and then online, mpam_restore_mbwu_state() calls __ris_msmon_read() via ipi to restore the configuration of the bandwidth counters. It doesn't care about the value read, mbwu_arg.val, and doesn't set it leading to a null pointer dereference when __ris_msmon_read() adds to it. This results in a kernel oops with a call trace such as:

Call trace: __ris_msmon_read+0x19c/0x64c (P) mpam_restore_mbwu_state+0xa0/0xe8 smp_call_on_cpu_callback+0x1c/0x38 process_one_work+0x154/0x4b4 worker_thread+0x188/0x310 kthread+0x11c/0x130 ret_from_fork+0x10/0x20

Provide a local variable for val to avoid __ris_msmon_read() dereferencing a null pointer when adding to val.

AnalysisAI

Null pointer dereference in Linux kernel arm_mpam memory bandwidth monitoring causes kernel oops when an MSC supporting bandwidth monitoring transitions offline and back online. The mpam_restore_mbwu_state() function fails to initialize a value buffer before passing it to __ris_msmon_read() via IPI, triggering a crash in the bandwidth counter restoration routine. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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Vendor StatusVendor

EUVD-2026-18671 vulnerability details – vuln.today

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Linux EUVD-2026-18671

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

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External POC / Exploit Code