[gnutls-devel] GnuTLS | Memory leak when using aead AES-CCM (#1017)

[Development of GNU's TLS library]

Marius Steffen created an issue: https://gitlab.com/gnutls/gnutls/-/issues/1017



## Description of problem:
I've noticed this bug through using Samba, which has been reported over here: https://bugzilla.samba.org/show_bug.cgi?id=14399

Apparently, there's a memory leak in gnutls's AEAD AES-CCM (not GCM) `gnutls_aead_cipher_decryptv2` when using CCM in SMB. 

## Version of gnutls used:
3.6.13

## How reproducible:

Steps to Reproduce:

 * Install Samba, enforce signing or encryption
 * Use client that only supports CCM (e.g. macOS)
 * Observe memory usage

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