giomba
/
opensc
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

dir: Avoid insane allocations 

Resolves:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17449
This commit is contained in:
Jakub Jelen 2019-10-01 11:54:56 +02:00 committed by Frank Morgner
parent 5490d73f31
commit eac516fd41
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/libopensc/dir.c
View File

@ -29,6 +29,8 @@
#include "internal.h"
#include "asn1.h"
#define MAX_FILE_SIZE 65535
struct app_entry {
const u8 *aid;
size_t aid_len;
@ -185,6 +187,8 @@ int sc_enum_apps(sc_card_t *card)
file_size = card->ef_dir->size;
if (file_size == 0)
LOG_FUNC_RETURN(ctx, 0);
if (file_size > MAX_FILE_SIZE)
LOG_FUNC_RETURN(ctx, SC_ERROR_INVALID_DATA);
buf = malloc(file_size);
if (buf == NULL)