CVE-2026-5071 (GCVE-0-2026-5071)
Vulnerability from cvelistv5 – Published: 2026-05-30 07:15 – Updated: 2026-10-15 22:10
VLAI
EPSS
VEX
Title
can: Local Denial of Service via SocketCAN Send
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 13:51 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Affected:
* , < 3.7.2
(git)
Affected: 4.0.0 , < 4.2.2 (git) Affected: 4.3.0 , < 4.3.1 (git) |
guessed |
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