Cloudanix VulnDB

CVE-2026-5071

Medium · 6.1

CVSS

6.1

EPSS

0.2%

Published

May 30, 2026

CISA due date

—

The record

The SocketCAN implementation validates the length of a user-provided buffer containing a socketcan_frame object using only a NET_ASSERT statement in zcan_sendto_ctx() before dereferencing it in socketcan_to_can_frame(). In production builds where assertions are disabled, a userspace application that controls the length passed to a sendto syscall can supply an incomplete or truncated frame, causing socketcan_to_can_frame() to dereference fields beyond the end of the buffer. This results in an out-of-bounds read that can cause denial-of-service crashes or, because the parsed frame contents are transmitted on the network, leak adjacent memory.

Affected packages

Ecosystem Package Introduced Fixed

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