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fix pe_calc_checksum bufor

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revert part of 45fedd9e501a44f9fdbb6e702a94168e400970fc
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olszomal 2022-02-28 13:30:10 +01:00 committed by Michał Trojnara
parent 4731667c35
commit b48458499b
1 changed files with 3 additions and 1 deletions
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osslsigncode.c
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@ -1780,10 +1780,11 @@ static int set_indirect_data_blob(PKCS7 *sig, BIO *hash, file_type_t type,
static uint32_t pe_calc_checksum(BIO *bio, FILE_HEADER *header) static uint32_t pe_calc_checksum(BIO *bio, FILE_HEADER *header)
{ {
uint32_t checkSum = 0, size = 0; uint32_t checkSum = 0, size = 0;
static u_char buf[65536]; /* 2^16 */ unsigned short *buf;
int nread; int nread;
/* recalculate the checksum */ /* recalculate the checksum */
buf = OPENSSL_malloc(65536); /* 2^16 */
(void)BIO_seek(bio, 0); (void)BIO_seek(bio, 0);
while ((nread = BIO_read(bio, buf, 65536)) > 0) { while ((nread = BIO_read(bio, buf, 65536)) > 0) {
unsigned short val; unsigned short val;
@ -1797,6 +1798,7 @@ static uint32_t pe_calc_checksum(BIO *bio, FILE_HEADER *header)
size += 2; size += 2;
} }
} }
OPENSSL_free(buf);
checkSum = 0xffff & (checkSum + (checkSum >> 0x10)); checkSum = 0xffff & (checkSum + (checkSum >> 0x10));
checkSum += size; checkSum += size;
return checkSum; return checkSum;