What is the CVSS score of EUVD-2026-16154?

EUVD-2026-16154 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-2026-16154?

Yes, a patch is available for EUVD-2026-16154. Update the affected software to the latest version immediately.

Linux EUVD-2026-16154

| CVE-2026-23396 MEDIUM

NULL Pointer Dereference (CWE-476)

2026-03-26 Linux

GHSA-w4qg-rh8m-6c8q

Denial Of Service Linux Null Pointer Dereference Canonical

5.5

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness

CWE

CWE-476

OWASP Top 10:2025

A10:2025 - Mishandling of Exceptional Conditions

ASVS 5.0

V16 - Security Logging and Error Handling Null pointer safety, defensive checks

MITRE ATT&CK

1 technique across 1 tactic: Impact

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 26, 2026

Linux kernel mac80211 mesh networking crashes on NULL pointer dereference when processing Channel Switch Announcement (CSA) action frames lacking Mesh Configuration IE, allowing adjacent WiFi attackers to trigger kernel panic (DoS) via crafted frames. Affects multiple stable kernel versions (6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, 7.0-rc5 and earlier); EPSS exploitation probability is 0.02% (low), no public exploit identified, and upstream fixes are available across all affected release branches.

Affected VersionsENISA

Linux 2e3c8736820bf72a8ad10721c7e31d36d4fa7790 <0a4da176ae4b4e075a19c00d3e269cfd5e05a813

Linux patch: 7.0-rc5

Linux 2e3c8736820bf72a8ad10721c7e31d36d4fa7790 <a90279e7f7ea0b7e923a1c5ebee9a6b78b6d1004

Linux patch: 6.12.78

Linux patch: 0

Linux 2e3c8736820bf72a8ad10721c7e31d36d4fa7790 <c1e3f2416fb27c816ce96d747d3e784e31f4d95c

Linux patch: 6.1.167

Linux 2e3c8736820bf72a8ad10721c7e31d36d4fa7790 <c73bb9a2d33bf81f6eecaa0f474b6c6dbe9855bd

Linux patch: 6.6.130

Linux 2.6.26

Linux patch: 6.18.20

Linux patch: 6.19.10

Linux 2e3c8736820bf72a8ad10721c7e31d36d4fa7790 <7c55a3deaf7eaaafa2546f8de7fed19382a0a116

Linux 2e3c8736820bf72a8ad10721c7e31d36d4fa7790 <44699c6cdfce80a0f296b54ae9314461e3e41b3d

Affected Packages

euvd linux no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.5 MEDIUM

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

SUSE 6.5 MEDIUM

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

Primary rating from NVD.

CVSS VectorNVD

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 24, 2026 - 15:22 NVD

5.5 (MEDIUM)

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

CVE Published

Mar 26, 2026 - 10:22 nvd

N/A

DescriptionNVD

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

wifi: mac80211: fix NULL deref in mesh_matches_local()

mesh_matches_local() unconditionally dereferences ie->mesh_config to compare mesh configuration parameters. When called from mesh_rx_csa_frame(), the parsed action-frame elements may not contain a Mesh Configuration IE, leaving ie->mesh_config NULL and triggering a kernel NULL pointer dereference.

The other two callers are already safe:

ieee80211_mesh_rx_bcn_presp() checks !elems->mesh_config before

calling mesh_matches_local()

mesh_plink_get_event() is only reached through

mesh_process_plink_frame(), which checks !elems->mesh_config, too

mesh_rx_csa_frame() is the only caller that passes raw parsed elements to mesh_matches_local() without guarding mesh_config. An adjacent attacker can exploit this by sending a crafted CSA action frame that includes a valid Mesh ID IE but omits the Mesh Configuration IE, crashing the kernel.

The captured crash log:

Oops: general protection fault, probably for non-canonical address ... KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] Workqueue: events_unbound cfg80211_wiphy_work [...] Call Trace: <TASK> ? __pfx_mesh_matches_local (net/mac80211/mesh.c:65) ieee80211_mesh_rx_queued_mgmt (net/mac80211/mesh.c:1686) [...] ieee80211_iface_work (net/mac80211/iface.c:1754 net/mac80211/iface.c:1802) [...] cfg80211_wiphy_work (net/wireless/core.c:426) process_one_work (net/kernel/workqueue.c:3280) ? assign_work (net/kernel/workqueue.c:1219) worker_thread (net/kernel/workqueue.c:3352) ? __pfx_worker_thread (net/kernel/workqueue.c:3385) kthread (net/kernel/kthread.c:436) [...] ret_from_fork_asm (net/arch/x86/entry/entry_64.S:255) </TASK>

This patch adds a NULL check for ie->mesh_config at the top of mesh_matches_local() to return false early when the Mesh Configuration IE is absent.

Threat Intelligence Overview

EPSS Score

0.0%

Top 93% exploitable

Threat Intel

1 source

Data Quality

6 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS CISA Vendor

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.0%

Patch available Yes

Active threat Yes

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +28

PoC: 0

Weaponized: 0

Threat intel: +10

Gov advisory: 0

Attack Technique

Null Pointer Dereference MEDIUM

A null pointer dereference occurs when a program attempts to access memory through a pointer that has been set to NULL (address 0x0).

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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Vendor StatusVendor

Debian

linux

Release	Status	Fixed Version	Urgency
bullseye	vulnerable	5.10.223-1	-
bullseye (security)	vulnerable	5.10.251-1	-
bookworm	vulnerable	6.1.159-1	-
bookworm (security)	vulnerable	6.1.164-1	-
trixie	vulnerable	6.12.73-1	-
trixie (security)	vulnerable	6.12.74-2	-
forky, sid	vulnerable	6.19.8-1	-
(unstable)	fixed	(unfixed)	-

SUSE

Severity: Medium

Product	Status
SUSE Linux Enterprise Desktop 15 SP7	Fixed
SUSE Linux Enterprise Desktop 15 SP7	Fixed
SUSE Linux Enterprise High Availability Extension 15 SP7	Fixed
SUSE Linux Enterprise High Availability Extension 15 SP7	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7	Fixed

Threat IntelligenceMISP

CISA Advisories

ICSA-26-295-16

Sources: CISA (public domain)

References

Advisories & patches

Search Externally

GitHub PoC

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