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Crash on check fail

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This commit is contained in:
Alex 2022-12-24 05:50:09 +02:00
parent bd12a57fb9
commit 7cb935db05
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
1 changed files with 27 additions and 17 deletions
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44
Library/Convert.c
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@ -860,6 +860,16 @@ char *ultoa(unsigned long Value, char *Buffer, int Base)
extern void __chk_fail(void) __attribute__((__noreturn__));
__noreturn static inline void __convert_chk_fail(void)
{
#if defined(__amd64__) || defined(__i386__)
asmv("int3");
#else
#error "Not implemented!"
#endif
__builtin_unreachable();
}
// #define DBG_CHK 1
__no_stack_protector void *__memcpy_chk(void *dest, const void *src, size_t len, size_t slen)
@ -870,25 +880,25 @@ __no_stack_protector void *__memcpy_chk(void *dest, const void *src, size_t len,
if (unlikely(dest == NULL))
{
error("dest is NULL");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(src == NULL))
{
error("src is NULL");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(len == 0))
{
error("len is 0");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(slen == 0))
{
error("slen is 0");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(len > slen))
@ -904,19 +914,19 @@ __no_stack_protector void *__memset_chk(void *dest, int val, size_t len, size_t
if (unlikely(dest == NULL))
{
error("dest is NULL");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(len == 0))
{
error("len is 0");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(slen == 0))
{
error("slen is 0");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(len > slen))
@ -932,25 +942,25 @@ __no_stack_protector void *__memmove_chk(void *dest, const void *src, size_t len
if (unlikely(dest == NULL))
{
error("dest is NULL");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(src == NULL))
{
error("src is NULL");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(len == 0))
{
error("len is 0");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(slen == 0))
{
error("slen is 0");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(len > slen))
@ -966,19 +976,19 @@ __no_stack_protector char *__strcat_chk(char *dest, const char *src, size_t slen
if (unlikely(dest == NULL))
{
error("dest is NULL");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(src == NULL))
{
error("src is NULL");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(slen == 0))
{
error("slen is 0");
__chk_fail();
__convert_chk_fail();
}
size_t dest_len = strlen(dest);
@ -995,19 +1005,19 @@ __no_stack_protector char *__strcpy_chk(char *dest, const char *src, size_t slen
if (unlikely(dest == NULL))
{
error("dest is NULL");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(src == NULL))
{
error("src is NULL");
__chk_fail();
__convert_chk_fail();
}
if (unlikely(slen == 0))
{
error("slen is 0");
__chk_fail();
__convert_chk_fail();
}
size_t len = strlen(src);