CVE-2026-5071

Description

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.

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Produits concernés

• zephyrproject-rtos Zephyr
• Zephyrproject zephyr

Scores CVSS

Faiblesses (CWE)

• CWE-125

Références

• https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3w6-x7m3-3c58 ExploitPatchVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories