openkylin
/
platform_system_core
mirror of https://gitee.com/openkylin/platform_system_core.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

am 4e830641: am 1def25a2: Merge commit \'7ac60686\' into manualmerge 

* commit '4e8306419073c93f07c7ac69955d990ffa315d96':
  Prevent integer overflow when allocating native_handle_t
This commit is contained in:
Adam Lesinski 2015-05-28 01:23:09 +00:00 committed by Android Git Automerger
parent 2557cd21f0 4e83064190
commit 87b02f23c0
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
libcutils/native_handle.c
View File

@ -25,11 +25,17 @@
#include <cutils/log.h>
#include <cutils/native_handle.h>
static const int kMaxNativeFds = 1024;
static const int kMaxNativeInts = 1024;
native_handle_t* native_handle_create(int numFds, int numInts)
{
native_handle_t* h = malloc(
sizeof(native_handle_t) + sizeof(int)*(numFds+numInts));
if (numFds < 0 || numInts < 0 || numFds > kMaxNativeFds || numInts > kMaxNativeInts) {
return NULL;
}
size_t mallocSize = sizeof(native_handle_t) + (sizeof(int) * (numFds + numInts));
native_handle_t* h = malloc(mallocSize);
if (h) {
h->version = sizeof(native_handle_t);
h->numFds = numFds;