目标达成 感谢每一位支持者 — 我们达成了 100% 目标！

目标: 1000 元 · 已筹: 1336 元

100%
请我们喝杯咖啡

CVE-2026-16514— OpenLiteOS gPTP Announce路径跟踪越界读取漏洞

一分钟漏洞结论

影响对象
zephyrproject zephyr
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

以下是对该漏洞描述信息的中文翻译： 在 中的 函数会遍历接收到的 IEEE 802.1AS Announce 消息中的路径追踪 TLV，并将每个时钟标识与本地时钟标识进行比对。该循环的边界仅取自攻击者可控的有线字段 （最大接受值为 254），而未取自 ，后者才是表明 TLV 实际携带多少个标识字段的字段。由于 是有线 TLV（ ）中的柔性数组成员，且 返回的是指向接收报文缓冲区的原始指针，因此循环内部的 可能会访问超出接收帧末尾的内存区域。 栈中唯一的长度校验函数 要求接收到的 gPTP 负载长度必须恰好为 字节—

CVSS 4.3 · Medium EPSS 0.24% · P15

影响版本矩阵 1

厂商产品 版本范围状态
zephyrproject zephyr 1.13.0< 4.4.2 affected
获取后续新漏洞提醒 登录后订阅

一、 漏洞 CVE-2026-16514 基础信息

漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗

尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。

Vulnerability Title
Out-of-bounds read in gPTP Announce path-trace validation via unvalidated stepsRemoved
来源: CVE Program / CVE List V5
Vulnerability Description
gptp_mi_qualify_announce() in subsys/net/l2/ethernet/gptp/gptp_mi.c walks the Path Trace TLV of a received IEEE 802.1AS Announce message, comparing each clock identity against the local one. The loop bound was taken solely from the attacker-controlled wire field announce->steps_removed (accepted up to 254), never from announce->tlv.len, which is the field that states how many identities the TLV actually carries. Because path_sequence is the flexible member of the wire TLV (struct gptp_path_trace_tlv) and GPTP_ANNOUNCE() yields a raw pointer into the received packet buffer, the memcmp() inside the loop can address memory well past the end of the received frame. The stack's only length validation, GPTP_ANNOUNCE_CHECK_LEN(), requires the received gPTP payload to be exactly 68 + tlv.len bytes — so it does not constrain the loop, it guarantees the data is absent. An unauthenticated attacker on the same Ethernet segment can send a single Announce frame declaring tlv.len = 0 with steps_removed = 254; the frame passes the length check and reception path (net_gptp_recv() → gptp_handle_msg() → gptp_mi_qualify_announce()), which performs no authentication, and the loop then reads 255 entries of 8 bytes each — about 2 KB — beyond the end of the network buffer. The impact is an out-of-bounds read. The bytes read are only used as a memcmp() operand and are never returned to the attacker, so there is no meaningful information disclosure; the practical risk is that the overread crosses a network buffer pool boundary into unmapped or MPU-protected memory and faults the networking RX thread, causing a denial of service. Exposure is limited to builds that enable the opt-in, experimental CONFIG_NET_GPTP (TSN/AVB deployments) and to attackers with layer-2 adjacency, since gPTP frames are sent to a link-local multicast address and are not routed. The fix computes the true entry count as tlv.len / GPTP_CLOCK_ID_LEN and rejects the announce when steps_removed + 1 exceeds it, so the loop can no longer run past the data the packet-length check proved present.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
来源: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
zephyrproject zephyr 1.13.0 ~ 4.4.2 -

二、漏洞 CVE-2026-16514 的公开POC

# POC 描述 源链接 神龙链接
AI 生成 POC 高级

未找到公开 POC。

登录以生成 AI POC

三、漏洞 CVE-2026-16514 的情报信息

请登录查看更多情报信息。

CVE-2026-16514 补丁与修复 (1)

CVE-2026-16514 厂商安全公告 (1)

同批安全公告 · zephyrproject · 2026-09-18 · 共 3 条

CVE-2026-16515 4.7 MEDIUM Zephyr IPv6协议栈ICMPv6网络放大漏洞
CVE-2026-16512 3.1 LOW Zephyr gPTP接收路径短帧越界读取漏洞

IV. Related Vulnerabilities

Same product: zephyr
Same vendor: zephyrproject
Same weakness: CWE-125

V. Comments for CVE-2026-16514

暂无评论

发表评论