topic Re: Se050-PLUG-TRUST-MW empty "axCi_Mutex" implementation and possibly deadlock in NXP cod in Secure Authentication

Se050-PLUG-TRUST-MW empty "axCi_Mutex" implementation and possibly deadlock in NXP code

grzegorz2 — Fri, 04 Feb 2022 10:51:38 GMT

I'am using MW version 03.03.00

I found out that openssl plugin uses mutex which has empty implementation in the file "sss/plugin/openssl/engine/src/ax_cryptoIpc.c" is it required to add implementation? Another issue with this mutex is that with proper implementation it can cause deadlock because of the bug in the file "sss/plugin/openssl/engine/src/ax_sssEngine_ecc.c". There is a code like this:

axCi_MutexLock();

if (status != kStatus_SSS_Success) {

return NULL;

}

axCi_MutexUnlock();

mutex is not released in case of error and application will be deadlocked after next function call

Re: Se050-PLUG-TRUST-MW empty "axCi_Mutex" implementation and possibly deadlock in NXP cod

Kan_Li — Tue, 08 Feb 2022 08:03:19 GMT

Hi @grzegorz2 ,

Actually I didn't find such kind of issue in the latest version of 04.01.01, would you please update the MW on your hands? or is there any reason to stay with the older version? Please kindly refer to https://www.nxp.com/products/security-and-authentication/authentication/edgelock-se051-proven-easy-to-use-iot-security-solution-with-support-for-updatability-and-custom-applets:SE051?tab=Design_Tools_Tab for more details.

Have a great day,
Kan

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Re: Se050-PLUG-TRUST-MW empty "axCi_Mutex" implementation and possibly deadlock in NXP cod

grzegorz2 — Tue, 08 Feb 2022 12:25:32 GMT

Hi @Kan_Li

I downloaded this new version and I don't see these mutexes anymore so I will use it. Thanks for support.

Have a nice day