Changeset 5719f6d in mainline

Timestamp:

2008-07-25T10:26:20Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

61bacde

Parents:

4e4052b

Message:

Check the validity of the 'len' argument for sysinfo syscalls.

File:

• kernel/generic/src/sysinfo/sysinfo.c (modified) (2 diffs)

kernel/generic/src/sysinfo/sysinfo.c

@@ -282 +282 @@
 }
 
+#define SYSINFO_MAX_LEN 1024
+
 unative_t sys_sysinfo_valid(unative_t ptr, unative_t len)
 {
         char *str;
         sysinfo_rettype_t ret = {0, 0};
+
+        if (len > SYSINFO_MAX_LEN)
+                return ret.valid;
         str = malloc(len + 1, 0);
         
@@ -300 +305 @@
         char *str;
         sysinfo_rettype_t ret = {0, 0};
+        
+        if (len > SYSINFO_MAX_LEN)
+                return ret.val;
         str = malloc(len + 1, 0);