CVE-2026-77641 - tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUX_SWITCH cell fails. The return value of relay_send_command_from_edge() was ignored, so a send failure (which calls circuit_mark_for_close() and removes the leg via cfx_del_leg()) would go undetected, causing the caller to write to the now-freed current leg and resulting in a crash. This is TROVE-2026-017. - 漏洞详情

漏洞编号：CVE-2026-77641

风险等级：中危

漏洞来源：CVE

CVE 编号：CVE-2026-77641

CNNVD 编号：-

厂商/产品：- / -

影响范围：-

CWE：CWE-252

发布/更新时间：2026-08-20 / 2026-08-27

漏洞描述

tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUX_SWITCH cell fails. The return value of relay_send_command_from_edge() was ignored, so a send failure (which calls circuit_mark_for_close() and removes the leg via cfx_del_leg()) would go undetected, causing the caller to write to the now-freed current leg and resulting in a crash. This is TROVE-2026-017.

漏洞描述

相关链接

相关漏洞