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Diffstat (limited to '0073-tools-xenstore-don-t-let-remove_child_entry-call-cor.patch')
-rw-r--r--0073-tools-xenstore-don-t-let-remove_child_entry-call-cor.patch110
1 files changed, 0 insertions, 110 deletions
diff --git a/0073-tools-xenstore-don-t-let-remove_child_entry-call-cor.patch b/0073-tools-xenstore-don-t-let-remove_child_entry-call-cor.patch
deleted file mode 100644
index 3c01eb5..0000000
--- a/0073-tools-xenstore-don-t-let-remove_child_entry-call-cor.patch
+++ /dev/null
@@ -1,110 +0,0 @@
-From 32ff913afed898e6aef61626a58dc0bf5c6309ef Mon Sep 17 00:00:00 2001
-From: Juergen Gross <jgross@suse.com>
-Date: Tue, 13 Sep 2022 07:35:11 +0200
-Subject: [PATCH 73/87] tools/xenstore: don't let remove_child_entry() call
- corrupt()
-
-In case of write_node() returning an error, remove_child_entry() will
-call corrupt() today. This could result in an endless recursion, as
-remove_child_entry() is called by corrupt(), too:
-
-corrupt()
- check_store()
- check_store_()
- remove_child_entry()
-
-Fix that by letting remove_child_entry() return an error instead and
-let the caller decide what to do.
-
-This is part of XSA-418 / CVE-2022-42321.
-
-Signed-off-by: Juergen Gross <jgross@suse.com>
-Reviewed-by: Julien Grall <jgrall@amazon.com>
-(cherry picked from commit 0c00c51f3bc8206c7f9cf87d014650157bee2bf4)
----
- tools/xenstore/xenstored_core.c | 36 ++++++++++++++++++---------------
- 1 file changed, 20 insertions(+), 16 deletions(-)
-
-diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_core.c
-index 3907c35643e9..f433a45dc217 100644
---- a/tools/xenstore/xenstored_core.c
-+++ b/tools/xenstore/xenstored_core.c
-@@ -1608,15 +1608,15 @@ static void memdel(void *mem, unsigned off, unsigned len, unsigned total)
- memmove(mem + off, mem + off + len, total - off - len);
- }
-
--static void remove_child_entry(struct connection *conn, struct node *node,
-- size_t offset)
-+static int remove_child_entry(struct connection *conn, struct node *node,
-+ size_t offset)
- {
- size_t childlen = strlen(node->children + offset);
-
- memdel(node->children, offset, childlen + 1, node->childlen);
- node->childlen -= childlen + 1;
-- if (write_node(conn, node, true))
-- corrupt(conn, "Can't update parent node '%s'", node->name);
-+
-+ return write_node(conn, node, true);
- }
-
- static void delete_child(struct connection *conn,
-@@ -1626,7 +1626,9 @@ static void delete_child(struct connection *conn,
-
- for (i = 0; i < node->childlen; i += strlen(node->children+i) + 1) {
- if (streq(node->children+i, childname)) {
-- remove_child_entry(conn, node, i);
-+ if (remove_child_entry(conn, node, i))
-+ corrupt(conn, "Can't update parent node '%s'",
-+ node->name);
- return;
- }
- }
-@@ -2325,6 +2327,17 @@ int remember_string(struct hashtable *hash, const char *str)
- return hashtable_insert(hash, k, (void *)1);
- }
-
-+static int rm_child_entry(struct node *node, size_t off, size_t len)
-+{
-+ if (!recovery)
-+ return off;
-+
-+ if (remove_child_entry(NULL, node, off))
-+ log("check_store: child entry could not be removed from '%s'",
-+ node->name);
-+
-+ return off - len - 1;
-+}
-
- /**
- * A node has a children field that names the children of the node, separated
-@@ -2377,12 +2390,7 @@ static int check_store_(const char *name, struct hashtable *reachable)
- if (hashtable_search(children, childname)) {
- log("check_store: '%s' is duplicated!",
- childname);
--
-- if (recovery) {
-- remove_child_entry(NULL, node,
-- i);
-- i -= childlen + 1;
-- }
-+ i = rm_child_entry(node, i, childlen);
- }
- else {
- if (!remember_string(children,
-@@ -2399,11 +2407,7 @@ static int check_store_(const char *name, struct hashtable *reachable)
- } else if (errno != ENOMEM) {
- log("check_store: No child '%s' found!\n",
- childname);
--
-- if (recovery) {
-- remove_child_entry(NULL, node, i);
-- i -= childlen + 1;
-- }
-+ i = rm_child_entry(node, i, childlen);
- } else {
- log("check_store: ENOMEM");
- ret = ENOMEM;
---
-2.37.4
-