PawletOS/external_libudev-zero
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prevent array index out of bounds

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illiliti
2020-08-03 18:37:40 +03:00
parent 8fa88d6697
commit 7754aa691c
1 changed files with 5 additions and 3 deletions
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8
udev_device.c
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@@ -9,6 +9,8 @@
#include "udev.h"
#include "udev_list.h"
enum { BITS_SIZE = 96 };
struct udev_device {
struct udev_list_entry properties;
struct udev_list_entry sysattrs;
@@ -330,7 +332,7 @@ static int populate_bit(unsigned long *arr, const char *val)
arr[i] = strtoul(bit, NULL, 16);
i++;
}
while ((bit = strtok_r(NULL, " ", &save)));
while ((bit = strtok_r(NULL, " ", &save)) && i < BITS_SIZE);
free(bits);
return i;
@@ -355,8 +357,8 @@ static int find_bit(unsigned long *arr, int cnt, int bit)
static void udev_device_set_properties_from_bits(struct udev_device *udev_device)
{
unsigned long rel_bits[96] = {0}, abs_bits[96] = {0};
unsigned long bits[96] = {0}, key_bits[96] = {0};
unsigned long rel_bits[BITS_SIZE] = {0}, abs_bits[BITS_SIZE] = {0};
unsigned long bits[BITS_SIZE] = {0}, key_bits[BITS_SIZE] = {0};
int bits_cnt, rel_cnt, key_cnt, abs_cnt;
struct udev_device *parent;
const char *subsystem;