initial import

unbound/CVE-2024-43167.patch

@@ -0,0 +1,42 @@
+From 8e43e2574c4e02f79c562a061581cdcefe136912 Mon Sep 17 00:00:00 2001
+From: zhailiangliang <zhailiangliang@loongson.cn>
+Date: Tue, 21 May 2024 08:40:16 +0000
+Subject: [PATCH] fix null pointer dereference issue in function ub_ctx_set_fwd
+ of file libunbound/libunbound.c
+
+---
+ libunbound/libunbound.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/libunbound/libunbound.c b/libunbound/libunbound.c
+index 17057ec6c..3c8955149 100644
+--- a/libunbound/libunbound.c
++++ b/libunbound/libunbound.c
+@@ -981,7 +981,8 @@ ub_ctx_set_fwd(struct ub_ctx* ctx, const char* addr)
+ 	if(!addr) {
+ 		/* disable fwd mode - the root stub should be first. */
+ 		if(ctx->env->cfg->forwards &&
+-			strcmp(ctx->env->cfg->forwards->name, ".") == 0) {
++			(ctx->env->cfg->forwards->name &&
++			strcmp(ctx->env->cfg->forwards->name, ".") == 0)) {
+ 			s = ctx->env->cfg->forwards;
+ 			ctx->env->cfg->forwards = s->next;
+ 			s->next = NULL;
+@@ -1001,7 +1002,8 @@ ub_ctx_set_fwd(struct ub_ctx* ctx, const char* addr)
+ 	/* it parses, add root stub in front of list */
+ 	lock_basic_lock(&ctx->cfglock);
+ 	if(!ctx->env->cfg->forwards ||
+-		strcmp(ctx->env->cfg->forwards->name, ".") != 0) {
++		(ctx->env->cfg->forwards->name &&
++		strcmp(ctx->env->cfg->forwards->name, ".") != 0)) {
+ 		s = calloc(1, sizeof(*s));
+ 		if(!s) {
+ 			lock_basic_unlock(&ctx->cfglock);
+@@ -1019,6 +1021,7 @@ ub_ctx_set_fwd(struct ub_ctx* ctx, const char* addr)
+ 		ctx->env->cfg->forwards = s;
+ 	} else {
+ 		log_assert(ctx->env->cfg->forwards);
++		log_assert(ctx->env->cfg->forwards->name);
+ 		s = ctx->env->cfg->forwards;
+ 	}
+ 	dupl = strdup(addr);