commit 8e805bf0f65ffd137a6c9ed89be060e5d9ba317d Author: Alexander Færøy ahf@torproject.org Date: Sat Jun 23 10:48:42 2018 +0200

Fix memory leak in new_establish_intro_cell().

This patch fixes a memory leak in new_establish_intro_cell() that could happen if a test assertion fails and the *cell_out value isn't properly free'd.

See: Coverity CID 1437445 --- src/test/test_hs_intropoint.c | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/src/test/test_hs_intropoint.c b/src/test/test_hs_intropoint.c index 0cae2de7e..b2d2700f8 100644 --- a/src/test/test_hs_intropoint.c +++ b/src/test/test_hs_intropoint.c @@ -43,6 +43,10 @@ new_establish_intro_cell(const char *circ_nonce, trn_cell_establish_intro_t *cell = NULL; hs_service_intro_point_t *ip = NULL;

+ /* Ensure that *cell_out is NULL such that we can use to check if we need to + * free `cell` in case of an error. */ + *cell_out = NULL; + /* Auth key pair is generated in the constructor so we are all set for * using this IP object. */ ip = service_intro_point_new(NULL, 0); @@ -56,6 +60,9 @@ new_establish_intro_cell(const char *circ_nonce, *cell_out = cell;

done: + if (*cell_out == NULL) + trn_cell_establish_intro_free(cell); + service_intro_point_free(ip); return cell_len; }