CVE-2026-1679— net: eswifi socket send payload length not bounded
Quick assessment
Affected
zephyrproject-rtos Zephyr
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Zephyr是Zephyr开源的一个可扩展的实时操作系统 (RTOS)。 Zephyr存在安全漏洞，该漏洞源于套接字卸载驱动程序将用户提供的有效载荷复制到固定缓冲区而未检查可用空间，可能导致内核内存损坏。
Possible ATT&CK Techniques 3 AI
T1055 · Process Injection T1068 · Exploitation for Privilege Escalation T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-1679
Vulnerability Information
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Vulnerability Title
net: eswifi socket send payload length not bounded
Source: CVE Program / CVE List V5
Vulnerability Description
The eswifi socket offload driver copies user-provided payloads into a fixed buffer without checking available space; oversized sends overflow `eswifi->buf`, corrupting kernel memory (CWE-120). Exploit requires local code that can call the socket send API; no remote attacker can reach it directly.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Zephyr 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zephyr是Zephyr开源的一个可扩展的实时操作系统 (RTOS)。 Zephyr存在安全漏洞，该漏洞源于套接字卸载驱动程序将用户提供的有效载荷复制到固定缓冲区而未检查可用空间，可能导致内核内存损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr | * ~ 4.3 | - |
|
II. Public POCs for CVE-2026-1679
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-1679 (1)
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V. Comments for CVE-2026-1679
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