From: Daniel Golle <daniel@makrotopia.org>
Date: Mon, 4 Oct 2021 00:31:39 +0000 (+0100)
Subject: uxc: fix segfault caused by use-after-free
X-Git-Url: http://git.openwrt.org/feed/routing.git;lede-17.01?a=commitdiff_plain;h=97bcdcf107ddf36cbbec5cafe85f6440476d0418;p=project%2Fprocd.git

uxc: fix segfault caused by use-after-free

Don't free blob_buf which was sent via ubus.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---

diff --git a/uxc.c b/uxc.c
index f67271e..a896d5f 100644
--- a/uxc.c
+++ b/uxc.c
@@ -586,12 +586,12 @@ static int uxc_create(char *name, bool immediately)
 	ret = 0;
 	if (ubus_lookup_id(ctx, "container", &id) ||
 		ubus_invoke(ctx, id, "add", req.head, NULL, NULL, 3000)) {
+		blob_buf_free(&req);
 		ret = EIO;
 	}
 
 	free(jailname);
 	free(path);
-	blob_buf_free(&req);
 
 	return ret;
 }