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golang/SOURCES/fix-crypto-memory-leaks.patch

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diff --git a/src/crypto/internal/boring/goopenssl.h b/src/crypto/internal/boring/goopenssl.h
index 3585458..ae1607b 100644
--- a/src/crypto/internal/boring/goopenssl.h
+++ b/src/crypto/internal/boring/goopenssl.h
@@ -667,6 +667,7 @@ typedef EVP_PKEY GO_EVP_PKEY;
DEFINEFUNC(GO_EVP_PKEY *, EVP_PKEY_new, (void), ())
DEFINEFUNC(void, EVP_PKEY_free, (GO_EVP_PKEY * arg0), (arg0))
DEFINEFUNC(int, EVP_PKEY_set1_RSA, (GO_EVP_PKEY * arg0, GO_RSA *arg1), (arg0, arg1))
+DEFINEFUNC(int, EVP_PKEY_set1_EC_KEY, (GO_EVP_PKEY * arg0, GO_EC_KEY *arg1), (arg0, arg1))
DEFINEFUNC(int, EVP_PKEY_verify,
(EVP_PKEY_CTX *ctx, const unsigned char *sig, unsigned int siglen, const unsigned char *tbs, size_t tbslen),
(ctx, sig, siglen, tbs, tbslen))
diff --git a/src/crypto/internal/boring/openssl_ecdsa_signature.c b/src/crypto/internal/boring/openssl_ecdsa_signature.c
index 4c14cc9..daa1252 100644
--- a/src/crypto/internal/boring/openssl_ecdsa_signature.c
+++ b/src/crypto/internal/boring/openssl_ecdsa_signature.c
@@ -9,19 +9,32 @@
int
_goboringcrypto_ECDSA_sign(EVP_MD* md, const uint8_t *msg, size_t msgLen, uint8_t *sig, unsigned int *slen, GO_EC_KEY *eckey)
{
+ int result;
EVP_PKEY *key = _goboringcrypto_EVP_PKEY_new();
- if (!_goboringcrypto_EVP_PKEY_assign_EC_KEY(key, eckey))
- return 0;
- return _goboringcrypto_EVP_sign(md, NULL, msg, msgLen, sig, slen, key);
+ if (!_goboringcrypto_EVP_PKEY_set1_EC_KEY(key, eckey)) {
+ result = 0;
+ goto err;
+ }
+ result = _goboringcrypto_EVP_sign(md, NULL, msg, msgLen, sig, slen, key);
+err:
+ _goboringcrypto_EVP_PKEY_free(key);
+ return result;
}
int
_goboringcrypto_ECDSA_verify(EVP_MD* md, const uint8_t *msg, size_t msgLen, const uint8_t *sig, unsigned int slen, GO_EC_KEY *eckey)
{
+ int result;
EVP_PKEY *key = _goboringcrypto_EVP_PKEY_new();
- if (!_goboringcrypto_EVP_PKEY_assign_EC_KEY(key, eckey))
- return 0;
+ if (!_goboringcrypto_EVP_PKEY_set1_EC_KEY(key, eckey)) {
+ result = 0;
+ goto err;
+ }
- return _goboringcrypto_EVP_verify(md, NULL, msg, msgLen, sig, slen, key);
+ result = _goboringcrypto_EVP_verify(md, NULL, msg, msgLen, sig, slen, key);
+
+err:
+ _goboringcrypto_EVP_PKEY_free(key);
+ return result;
}
diff --git a/src/crypto/internal/boring/openssl_port_rsa.c b/src/crypto/internal/boring/openssl_port_rsa.c
index a8d047d..2e56499 100644
--- a/src/crypto/internal/boring/openssl_port_rsa.c
+++ b/src/crypto/internal/boring/openssl_port_rsa.c
@@ -25,14 +25,13 @@ int _goboringcrypto_RSA_digest_and_sign_pss_mgf1(GO_RSA *rsa, unsigned int *out_
EVP_PKEY_CTX *ctx;
unsigned int siglen;
+ int ret = 0;
EVP_PKEY *key = _goboringcrypto_EVP_PKEY_new();
- if (!_goboringcrypto_EVP_PKEY_assign_RSA(key, rsa))
- return 0;
+ if (!_goboringcrypto_EVP_PKEY_set1_RSA(key, rsa))
+ goto err;
ctx = _goboringcrypto_EVP_PKEY_CTX_new(key, NULL /* no engine */);
if (!ctx)
- return 0;
-
- int ret = 0;
+ goto err;
EVP_MD_CTX *mdctx = NULL;
if (!(mdctx = _goboringcrypto_EVP_MD_CTX_create()))
@@ -67,6 +66,10 @@ int _goboringcrypto_RSA_digest_and_sign_pss_mgf1(GO_RSA *rsa, unsigned int *out_
err:
if (mdctx)
_goboringcrypto_EVP_MD_CTX_free(mdctx);
+ if (ctx)
+ _goboringcrypto_EVP_PKEY_CTX_free(ctx);
+ if (key)
+ _goboringcrypto_EVP_PKEY_free(key);
return ret;
}
@@ -78,18 +81,17 @@ int _goboringcrypto_RSA_sign_pss_mgf1(GO_RSA *rsa, unsigned int *out_len, uint8_
EVP_PKEY *pkey;
size_t siglen;
+ int ret = 0;
pkey = _goboringcrypto_EVP_PKEY_new();
if (!pkey)
- return 0;
+ goto err;
if (_goboringcrypto_EVP_PKEY_set1_RSA(pkey, rsa) <= 0)
- return 0;
-
+ goto err;
+
ctx = _goboringcrypto_EVP_PKEY_CTX_new(pkey, NULL /* no engine */);
if (!ctx)
- return 0;
-
- int ret = 0;
+ goto err;
if (_goboringcrypto_EVP_PKEY_sign_init(ctx) <= 0)
goto err;
@@ -101,7 +103,7 @@ int _goboringcrypto_RSA_sign_pss_mgf1(GO_RSA *rsa, unsigned int *out_len, uint8_
goto err;
if (_goboringcrypto_EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, mgf1_md) <= 0)
goto err;
-
+
/* Determine buffer length */
if (_goboringcrypto_EVP_PKEY_sign(ctx, NULL, &siglen, in, in_len) <= 0)
goto err;
@@ -116,7 +118,10 @@ int _goboringcrypto_RSA_sign_pss_mgf1(GO_RSA *rsa, unsigned int *out_len, uint8_
ret = 1;
err:
- _goboringcrypto_EVP_PKEY_CTX_free(ctx);
+ if (ctx)
+ _goboringcrypto_EVP_PKEY_CTX_free(ctx);
+ if (pkey)
+ _goboringcrypto_EVP_PKEY_free(pkey);
return ret;
}
@@ -130,14 +135,14 @@ int _goboringcrypto_RSA_verify_pss_mgf1(RSA *rsa, const uint8_t *msg, unsigned i
pkey = _goboringcrypto_EVP_PKEY_new();
if (!pkey)
- return 0;
+ goto err;
if (_goboringcrypto_EVP_PKEY_set1_RSA(pkey, rsa) <= 0)
- return 0;
-
+ goto err;
+
ctx = _goboringcrypto_EVP_PKEY_CTX_new(pkey, NULL /* no engine */);
if (!ctx)
- return 0;
+ goto err;
if (_goboringcrypto_EVP_PKEY_verify_init(ctx) <= 0)
goto err;
@@ -155,25 +160,40 @@ int _goboringcrypto_RSA_verify_pss_mgf1(RSA *rsa, const uint8_t *msg, unsigned i
ret = 1;
err:
- _goboringcrypto_EVP_PKEY_CTX_free(ctx);
+ if (ctx)
+ _goboringcrypto_EVP_PKEY_CTX_free(ctx);
+ if (pkey)
+ _goboringcrypto_EVP_PKEY_free(pkey);
+
return ret;
}
int _goboringcrypto_EVP_RSA_sign(EVP_MD *md, const uint8_t *msg, unsigned int msgLen, uint8_t *sig, unsigned int *slen, RSA *rsa)
{
+ int result;
EVP_PKEY *key = _goboringcrypto_EVP_PKEY_new();
- if (!_goboringcrypto_EVP_PKEY_assign_RSA(key, rsa))
- return 0;
- return _goboringcrypto_EVP_sign(md, NULL, msg, msgLen, sig, slen, key);
+ if (!_goboringcrypto_EVP_PKEY_set1_RSA(key, rsa)) {
+ result = 0;
+ goto err;
+ }
+ result = _goboringcrypto_EVP_sign(md, NULL, msg, msgLen, sig, slen, key);
+err:
+ _goboringcrypto_EVP_PKEY_free(key);
+ return result;
}
int _goboringcrypto_EVP_RSA_verify(EVP_MD *md, const uint8_t *msg, unsigned int msgLen, const uint8_t *sig, unsigned int slen, GO_RSA *rsa)
{
+ int result;
EVP_PKEY *key = _goboringcrypto_EVP_PKEY_new();
- if (!_goboringcrypto_EVP_PKEY_assign_RSA(key, rsa))
- {
- return 0;
+ if (!_goboringcrypto_EVP_PKEY_set1_RSA(key, rsa)) {
+ result = 0;
+ goto err;
}
- return _goboringcrypto_EVP_verify(md, NULL, msg, msgLen, sig, slen, key);
+ result = _goboringcrypto_EVP_verify(md, NULL, msg, msgLen, sig, slen, key);
+err:
+ _goboringcrypto_EVP_PKEY_free(key);
+ return result;
+
}
diff --git a/src/crypto/internal/boring/rsa.go b/src/crypto/internal/boring/rsa.go
index 2eefc27..698c08e 100644
--- a/src/crypto/internal/boring/rsa.go
+++ b/src/crypto/internal/boring/rsa.go
@@ -162,12 +162,23 @@ func setupRSA(withKey func(func(*C.GO_RSA) C.int) C.int,
return nil, nil, NewOpenSSLError("EVP_PKEY_set_rsa_oaep_md failed")
}
// ctx takes ownership of label, so malloc a copy for BoringCrypto to free.
- clabel := (*C.uint8_t)(C.malloc(C.size_t(len(label))))
- if clabel == nil {
- return nil, nil, fail("OPENSSL_malloc")
+ var clabel *C.uint8_t
+ clabel = nil
+ // OpenSSL 1.1.1 does not take ownership of the label if the length is zero.
+ // Depending on the malloc implementation, if clabel is allocated with malloc(0),
+ // metadata for the size-zero allocation is never cleaned up, which is a memory leak.
+ // As such, we must only allocate clabel if the label is of non zero length.
+ if len(label) > 0 {
+ clabel = (*C.uint8_t)(C.malloc(C.size_t(len(label))))
+ if clabel == nil {
+ return nil, nil, fail("OPENSSL_malloc")
+ }
+ copy((*[1 << 30]byte)(unsafe.Pointer(clabel))[:len(label)], label)
}
- copy((*[1 << 30]byte)(unsafe.Pointer(clabel))[:len(label)], label)
- if C._goboringcrypto_EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, clabel, C.int(len(label))) == 0 {
+ if C._goboringcrypto_EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, clabel, C.int(len(label))) != 1 {
+ if clabel != nil {
+ C.free(unsafe.Pointer(clabel))
+ }
return nil, nil, NewOpenSSLError("EVP_PKEY_CTX_set0_rsa_oaep_label failed")
}
}
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