From: Daniel Golle <daniel@makrotopia.org>
Date: Sun, 12 Jul 2020 16:36:05 +0000 (+0100)
Subject: jail: fix segfault with len(uidmap/gidmap) > 1
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=9d0f83183400be105bd3cd8b9530d6eb9d678e0d;p=project%2Fprocd.git

jail: fix segfault with len(uidmap/gidmap) > 1

Allocate enough memory for all uidmap/gidmap entries.

Fixes: ea7a790 ("jail: add support for running OCI bundle")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---

diff --git a/jail/jail.c b/jail/jail.c
index 8a2d890..aa9285c 100644
--- a/jail/jail.c
+++ b/jail/jail.c
@@ -1105,7 +1105,7 @@ static int parseOCIuidgidmappings(struct blob_attr *msg, bool is_gidmap)
 	}
 
 	/* allocate combined mapping string */
-	map = calloc(1 + len, sizeof(char));
+	map = calloc(1 + totallen, sizeof(char));
 	if (!map)
 		return ENOMEM;