漏洞信息
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Vulnerability Title
ptp: Potential Denial of Service via PTP Interval Shift
Vulnerability Description
A bitwise shift vulnerability in Zephyr's PTP subsystem allows a remote attacker to cause undefined behavior and potential system crashes. An attacker sends a crafted PTP_MSG_MANAGEMENT message to set an unvalidated negative log_announce_interval value in the port's data set. When a subsequent PTP_MSG_ANNOUNCE message is processed, port_timer_set_timeout_random computes a timeout as NSEC_PER_SEC >> -log_seconds; if the attacker-supplied value is sufficiently negative (e.g., -127), the shift amount exceeds the 64-bit integer width, triggering undefined behavior in C. This can cause a system crash via a compiler-generated illegal instruction trap on some architectures, or produce an erroneous zero timeout leading to resource starvation loops or other logical errors.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Zephyr 安全漏洞
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,该漏洞源于位偏移问题,可能导致远程攻击者通过发送特制的PTP_MSG_MANAGEMENT消息设置未验证的负log_announce_interval值,在后续处理PTP_MSG_ANNOUNCE消息时触发未定义行为,导致系统崩溃或资源耗尽。
CVSS Information
N/A
Vulnerability Type
N/A