What is the CVSS score of EUVD-2026-15211?

EUVD-2026-15211 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-2026-15211?

Yes, a patch is available for EUVD-2026-15211. Update the affected software to the latest version immediately.

Linux EUVD-2026-15211

| CVE-2026-23285 MEDIUM

NULL Pointer Dereference (CWE-476)

2026-03-25 Linux

Linux Null Pointer Dereference Denial Of Service Red Hat

5.5

CVSS 3.1 · NVD

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

MEDIUM

qualitative

Red Hat

MEDIUM

qualitative

Primary rating from NVD.

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

May 22, 2026 - 00:22 NVD

5.5 (MEDIUM)

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

EUVD ID Assigned

Mar 25, 2026 - 10:45 euvd

EUVD-2026-15211

Analysis Generated

Mar 25, 2026 - 10:45 vuln.today

CVE Published

Mar 25, 2026 - 10:26 nvd

N/A

DescriptionCVE.org

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

drbd: fix null-pointer dereference on local read error

In drbd_request_endio(), READ_COMPLETED_WITH_ERROR is passed to __req_mod() with a NULL peer_device:

__req_mod(req, what, NULL, &m);

The READ_COMPLETED_WITH_ERROR handler then unconditionally passes this NULL peer_device to drbd_set_out_of_sync(), which dereferences it, causing a null-pointer dereference.

Fix this by obtaining the peer_device via first_peer_device(device), matching how drbd_req_destroy() handles the same situation.

AnalysisAI

A null-pointer dereference vulnerability exists in the Linux kernel's DRBD (Distributed Replicated Block Device) subsystem when handling local read errors. When a READ_COMPLETED_WITH_ERROR event occurs in drbd_request_endio(), a NULL peer_device pointer is passed to the __req_mod() function, which then unconditionally dereferences it in drbd_set_out_of_sync(), causing a kernel panic or system crash. This affects all Linux kernel versions with the vulnerable DRBD code, and while not actively exploited in the wild, it can be triggered by a local user or administrator through normal disk I/O error conditions, resulting in denial of service.

Technical ContextAI

The vulnerability resides in the Linux kernel's DRBD (Distributed Replicated Block Device) module, a software-based RAID-1 implementation used for block-level replication across networked systems. The root cause is a classic null-pointer dereference (CWE-476) in the request completion path. Specifically, when drbd_request_endio() handles READ_COMPLETED_WITH_ERROR events, it invokes __req_mod(req, READ_COMPLETED_WITH_ERROR, NULL, &m) with a NULL peer_device parameter. The READ_COMPLETED_WITH_ERROR handler then calls drbd_set_out_of_sync(device, sector_nr, size, peer_device) without validating the peer_device pointer, assuming it is valid. The fix normalizes this behavior by obtaining the peer_device via first_peer_device(device), mirroring the safe approach already used in drbd_req_destroy(). The affected CPE entries (cpe:2.3:a:linux:linux) confirm this impacts the Linux kernel across distributions.

RemediationAI

Apply the Linux kernel security patch by upgrading to a patched kernel version that includes one of the five committed fixes available at https://git.kernel.org/stable/. Most distributions will include this fix in their next kernel update; check your distribution's security advisory and kernel repository for availability. For immediate protection, disable DRBD replication or remove the DRBD module if not actively in use, though this eliminates high-availability functionality. Alternatively, configure monitoring and automated restart mechanisms to detect and recover from kernel panics caused by this issue until patching is feasible. Prioritize patching for any production systems relying on DRBD for storage replication.

Same weakness CWE-476 – NULL Pointer Dereference

View all

CVE-2016-0742 HIGH

7.5

CVE-2014-3470 MEDIUM

4.3

CVE-2017-3730 HIGH POC

7.5

CVE-2017-3169 CRITICAL POC

9.8

CVE-2016-4957 HIGH

7.5

CVE-2015-3194 HIGH

7.5

CVE-2026-21525 MEDIUM

6.2

CVE-2017-0016 MEDIUM

5.9

Same technique Null Pointer Dereference

View all

CVE-2016-0742 HIGH

7.5

CVE-2014-3470 MEDIUM

4.3

CVE-2017-3730 HIGH POC

7.5

CVE-2017-3169 CRITICAL POC

9.8

CVE-2016-4957 HIGH

7.5

CVE-2015-3194 HIGH

7.5

CVE-2026-21525 MEDIUM

6.2

CVE-2017-0016 MEDIUM

5.9

Vendor StatusVendor

Debian

linux

Release	Status	Fixed Version	Urgency
bullseye	not-affected	-	-
bullseye (security)	fixed	5.10.251-1	-
bookworm	not-affected	-	-
bookworm (security)	fixed	6.1.164-1	-
trixie	vulnerable	6.12.73-1	-
trixie (security)	vulnerable	6.12.74-2	-
forky, sid	fixed	6.19.8-1	-
(unstable)	fixed	6.19.8-1	-

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

EUVD-2026-15211 vulnerability details – vuln.today

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Linux EUVD-2026-15211

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

Same weakness CWE-476 – NULL Pointer Dereference

Same technique Null Pointer Dereference

Vendor StatusVendor

Debian

SUSE

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External POC / Exploit Code