From: Phil Sutter <phil@nwl.cc>
Date: Tue, 26 Jan 2021 17:52:15 +0000 (+0100)
Subject: erec: Sanitize erec location indesc
X-Git-Tag: v0.9.9~125
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2f89bc258e6e06ec4eeccc9efa52f01b4118e359;p=thirdparty%2Fnftables.git

erec: Sanitize erec location indesc

erec_print() unconditionally dereferences erec->locations->indesc, so
make sure it is valid when either creating an erec or adding a location.

Signed-off-by: Phil Sutter <phil@nwl.cc>
---

diff --git a/src/erec.c b/src/erec.c
index c550a596..5c3351a5 100644
--- a/src/erec.c
+++ b/src/erec.c
@@ -38,7 +38,8 @@ void erec_add_location(struct error_record *erec, const struct location *loc)
 {
 	assert(erec->num_locations < EREC_LOCATIONS_MAX);
 	erec->locations[erec->num_locations] = *loc;
-	erec->locations[erec->num_locations].indesc = loc->indesc;
+	erec->locations[erec->num_locations].indesc = loc->indesc ?
+						    : &internal_indesc;
 	erec->num_locations++;
 }