From: Felix Fietkau <nbd@nbd.name>
Date: Fri, 28 Feb 2025 15:05:21 +0000 (+0100)
Subject: pex-msg: ignore no-data responses if version is zero
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=8e6f37cc361ef16df35d7ddc359c59f9b2e4c5ab;p=project%2Funetd.git

pex-msg: ignore no-data responses if version is zero

These messages must not be allowed to cancel existing requests

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/pex-msg.c b/pex-msg.c
index b45eda0..fef5505 100644
--- a/pex-msg.c
+++ b/pex-msg.c
@@ -513,7 +513,7 @@ void *pex_msg_update_response_recv(const void *data, int len, enum pex_opcode op
 	} else if (op == PEX_MSG_UPDATE_RESPONSE_NO_DATA) {
 		const struct pex_update_response_no_data *res = data;
 
-		if (len < sizeof(*res))
+		if (len < sizeof(*res) || !res->cur_version)
 			return NULL;
 
 		ctx = pex_msg_update_recv_ctx_get(res->req_id);