diff options
| -rw-r--r-- | changes/ticket33619 | 5 | ||||
| -rw-r--r-- | src/core/or/circuitpadding.c | 9 |
2 files changed, 11 insertions, 3 deletions
diff --git a/changes/ticket33619 b/changes/ticket33619 new file mode 100644 index 0000000000..3c52858b35 --- /dev/null +++ b/changes/ticket33619 @@ -0,0 +1,5 @@ + o Major bugfixes (circuit padding, memory leaks): + - Avoid a remotely triggered memory leak in the case that a circuit + padding machine is somehow negotiated twice on the same circuit. Fixes + bug 33619; bugfix on 0.4.0.1-alpha. Found by Tobias Pulls. This is + also tracked as TROVE-2020-004. diff --git a/src/core/or/circuitpadding.c b/src/core/or/circuitpadding.c index a62cdcf9e6..72b770113c 100644 --- a/src/core/or/circuitpadding.c +++ b/src/core/or/circuitpadding.c @@ -2381,9 +2381,12 @@ circpad_setup_machine_on_circ(circuit_t *on_circ, return; } - tor_assert_nonfatal(on_circ->padding_machine[machine->machine_index] - == NULL); - tor_assert_nonfatal(on_circ->padding_info[machine->machine_index] == NULL); + IF_BUG_ONCE(on_circ->padding_machine[machine->machine_index] != NULL) { + return; + } + IF_BUG_ONCE(on_circ->padding_info[machine->machine_index] != NULL) { + return; + } /* Log message */ if (CIRCUIT_IS_ORIGIN(on_circ)) { |