commit a16bea0: [Fix] Fix overflow in fuzzy_stats command

[Vsevolod Stakhov]

Author: Vsevolod Stakhov
Date: 2023-11-21 14:47:19 +0000
URL: https://github.com/rspamd/rspamd/commit/a16bea0e74b6bd17f54cf296cf1807a1e83ab2da

[Fix] Fix overflow in fuzzy_stats command

---
 src/fuzzy_storage.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/fuzzy_storage.c b/src/fuzzy_storage.c
index b8ee95c15..99d2ef1a1 100644
--- a/src/fuzzy_storage.c
+++ b/src/fuzzy_storage.c
@@ -1333,8 +1333,9 @@ rspamd_fuzzy_process_command(struct fuzzy_session *session)
 	}
 	else if (cmd->cmd == FUZZY_STAT) {
 		result.v1.prob = 1.0f;
-		result.v1.value = 0;
-		result.v1.flag = session->ctx->stat.fuzzy_hashes;
+		/* Store high qword in value and low qword in flag */
+		result.v1.value = (gint32) ((guint64) session->ctx->stat.fuzzy_hashes >> 32);
+		result.v1.flag = session->ctx->stat.fuzzy_hashes & G_MAXUINT32;
 		rspamd_fuzzy_make_reply(cmd, &result, session, send_flags);
 	}
 	else if (cmd->cmd == FUZZY_PING) {