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Ensure we check i2d_X509 return val

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The i2d_X509() function can return a negative value on error. Therefore
we should make sure we check it.

Issue reported by Yuan Jochen Kang.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 446ba8de9a)
This commit is contained in:
Matt Caswell 2016-04-25 16:05:55 +01:00
parent 1ee4541576
commit a04d08fc18
1 changed files with 12 additions and 3 deletions
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15
crypto/asn1/x_x509.c
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@ -201,9 +201,18 @@ X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
int i2d_X509_AUX(X509 *a, unsigned char **pp)
{
int length;
int length, tmplen;
unsigned char *start = *pp;
length = i2d_X509(a, pp);
if (a)
length += i2d_X509_CERT_AUX(a->aux, pp);
if (length < 0 || a == NULL)
return length;
tmplen = i2d_X509_CERT_AUX(a->aux, pp);
if (tmplen < 0) {
*pp = start;
return tmplen;
}
length += tmplen;
return length;
}