CVE-2026-23285

kernel: drbd: fix null-pointer dereference on local read error

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Severity

Moderate

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · March 25, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's Distributed Replicated Block Device (DRBD) module. A local read error within the drbd_request_endio() function can lead to a null-pointer dereference. This occurs when a NULL peer device is incorrectly passed to the drbd_set_out_of_sync() function, causing the system to crash. This vulnerability can result in a Denial of Service (DoS).

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-476 · NULL Pointer Dereference