UBUNTU-CVE-2026-77641

tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUXSWITCH cell fails. The return value of relaysendcommandfromedge was ignored, so a send failure which calls circuitmarkforclose and removes the leg via cfxdelleg would go undetected, causing the caller to write to the...

CVE-2026-77641

tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUXSWITCH cell fails. The return value of relaysendcommandfromedge was ignored, so a send failure which calls circuitmarkforclose and removes the leg via cfxdelleg would go undetected, causing the caller to write to the...

CVE-2026-77641

tor versions before 0.4.9.9 are affected by a NULL write after free in the CONFLUX protocol handling. When sending a CONFLUX_SWITCH cell fails, the return value of relay_send_command_from_edge() is ignored. The failed send triggers circuit_mark_for_close() and removes the circuit leg via cfx_del_...