CVE-2021-3330— RCE/DOS: Linked-list corruption leading to large out-of-bounds write while sorting for forged fragment list in Zephyr
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I. Basic Information for CVE-2021-3330
Vulnerability Information
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Vulnerability Title
RCE/DOS: Linked-list corruption leading to large out-of-bounds write while sorting for forged fragment list in Zephyr
Source: NVD (National Vulnerability Database)
Vulnerability Description
RCE/DOS: Linked-list corruption leading to large out-of-bounds write while sorting for forged fragment list in Zephyr. Zephyr versions >= >=2.4.0 contain Out-of-bounds Write (CWE-787). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fj4r-373f-9456
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
Vulnerability Title
Zephyr 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zephyr是美国Linux基金会的一套开源的小型的可缩放的实时操作系统。 Zephyr存在缓冲区错误漏洞，该漏洞源于网络系统或产品的代码开发过程中存在设计或实现不当的问题。
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 | >=2.4.0 ~ unspecified | - |
II. Public POCs for CVE-2021-3330
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · zephyrproject-rtos · 2021-10-12 · 4 CVEs total
| CVE-2021-3323 | 8.3 HIGH | Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr |
| CVE-2021-3321 | 7.5 HIGH | Integer Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal |
| CVE-2021-3322 | 6.5 MEDIUM | Unexpected Pointer Aliasing in IEEE 802154 Fragment Reassembly in Zephyr |
IV. Related Vulnerabilities
Same product: zephyr
- 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 - CVE-2026-4179
stm32: usb: Infinite while loop in Interrupt Handler - CVE-2026-0849
crypto: ATAES132A response length allows stack buffer overfl
Same vendor: zephyrproject-rtos
- 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 - CVE-2026-4179
stm32: usb: Infinite while loop in Interrupt Handler - CVE-2026-0849
crypto: ATAES132A response length allows stack buffer overfl
V. Comments for CVE-2021-3330
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