Attention is currently required from: plaisthos.

Hello plaisthos,

I'd like you to do a code review.
Please visit

    http://gerrit.openvpn.net/c/openvpn/+/1849?usp=email

to review the following change.


Change subject: mbedtls: Work-around bug in mbedtls 4.1.0 and 4.2.0
......................................................................

mbedtls: Work-around bug in mbedtls 4.1.0 and 4.2.0

Since the first distros have started to pick up these
versions before a fix is released, let's make our tests
pass on these versions.

A fix is merged, so it might be fixed in 4.3.0. But I
didn't want to add that to the version check until we
have verified that.

Change-Id: I694410615958afbb422d9ead71f04c1a60edc640
Signed-off-by: Frank Lichtenheld <[email protected]>
---
M .github/workflows/build.yaml
M src/openvpn/mbedtls_compat.h
2 files changed, 13 insertions(+), 1 deletion(-)



  git pull ssh://gerrit.openvpn.net:29418/openvpn refs/changes/49/1849/1

diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 29e8be2a..56dd3ed 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -365,7 +365,7 @@
       ovpnlibdesc: mbed TLS 4.
       # versioning=semver-coerced
       ghrepo: Mbed-TLS/mbedtls
-      gitref: v4.0.0
+      gitref: v4.2.0
       libconfigure: cmake -B build -DCMAKE_INSTALL_PREFIX=$LIBPREFIX
       libmake: cmake --build build
       libinstall: sudo cmake --install build
diff --git a/src/openvpn/mbedtls_compat.h b/src/openvpn/mbedtls_compat.h
index 50739b6..7149487 100644
--- a/src/openvpn/mbedtls_compat.h
+++ b/src/openvpn/mbedtls_compat.h
@@ -43,6 +43,7 @@
 #include "crypto_mbedtls_legacy.h"
 #else
 #include <mbedtls/oid.h>
+#include "crypto_mbedtls.h"
 #endif /* MBEDTLS_VERSION_NUMBER < 0x04000000 */

 #ifdef HAVE_PSA_CRYPTO_H
@@ -228,6 +229,17 @@
 mbedtls_compat_pk_check_pair(const mbedtls_pk_context *pub, const 
mbedtls_pk_context *prv)
 {
 #if MBEDTLS_VERSION_NUMBER >= 0x04000000
+    /* work around bug in mbedtls 4.1.0 by adding missing public key 
information in prv
+     * cf. https://github.com/Mbed-TLS/TF-PSA-Crypto/issues/807 */
+#if MBEDTLS_VERSION_NUMBER >= 0x04010000
+    if (prv->MBEDTLS_PRIVATE(pub_raw_len) == 0)
+    {
+        ASSERT(mbed_ok(psa_export_public_key(prv->MBEDTLS_PRIVATE(priv_id),
+                                             (uint8_t 
*)prv->MBEDTLS_PRIVATE(pub_raw),
+                                             
sizeof(prv->MBEDTLS_PRIVATE(pub_raw)),
+                                             (size_t 
*)&prv->MBEDTLS_PRIVATE(pub_raw_len))));
+    }
+#endif
     return mbedtls_pk_check_pair(pub, prv);
 #else
     return mbedtls_pk_check_pair(pub, prv, mbedtls_ctr_drbg_random, 
rand_ctx_get());

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Gerrit-MessageType: newchange
Gerrit-Project: openvpn
Gerrit-Branch: master
Gerrit-Change-Id: I694410615958afbb422d9ead71f04c1a60edc640
Gerrit-Change-Number: 1849
Gerrit-PatchSet: 1
Gerrit-Owner: flichtenheld <[email protected]>
Gerrit-Reviewer: plaisthos <[email protected]>
Gerrit-CC: openvpn-devel <[email protected]>
Gerrit-Attention: plaisthos <[email protected]>
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