CVE-2026-5071— can: Local Denial of Service via SocketCAN Send
Possible ATT&CK Techniques 1AI
T1200 · Hardware AdditionsAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| zephyrproject-rtos | Zephyr | *≤ 4.3 | affected |
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I. Basic Information for CVE-2026-5071
Vulnerability Information
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Vulnerability Title
can: Local Denial of Service via SocketCAN Send
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr | * ~ 4.3 | - |
II. Public POCs for CVE-2026-5071
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-5071 (1)
IV. Related Vulnerabilities
Same product: Zephyr
- CVE-2026-5072
ptp: Potential Denial of Service via PTP Interval Shift - CVE-2026-1681
net: Stack Overflow with Ping (to own IP Address) via Shell - CVE-2026-1677
net: TLS 1.2 connections allowed on TLS 1.3 sockets - CVE-2026-5590
net: ip/tcp: Null pointer dereference can be triggered by a - CVE-2026-1679
net: eswifi socket send payload length not bounded
Same vendor: zephyrproject-rtos
- CVE-2026-5072
ptp: Potential Denial of Service via PTP Interval Shift - CVE-2026-1681
net: Stack Overflow with Ping (to own IP Address) via Shell - CVE-2026-1677
net: TLS 1.2 connections allowed on TLS 1.3 sockets - CVE-2026-5590
net: ip/tcp: Null pointer dereference can be triggered by a - CVE-2026-1679
net: eswifi socket send payload length not bounded
V. Comments for CVE-2026-5071
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