[gnutls-devel] GnuTLS | lib/pkcs11_privkey.c: Add check for gnutls_malloc (!2000)

[Read-only notification of GnuTLS library development activities]

Jiasheng Jiang created a merge request: https://gitlab.com/gnutls/gnutls/-/merge_requests/2000

Project:Branches: purdue-university1/gnutls:patch24 to gnutls/gnutls:master
Author:   Jiasheng Jiang




<!-- Add a description of the new feature/bug fix. Reference any relevant bugs. -->

* lib/pkcs11_privkey.c: Add check for gnutls_malloc

Add check for the return value of gnutls_malloc() to avoid potential NULL pointer dereference.

Fixes: be560a813 ("Added gnutls_pkcs11_privkey_t and gnutls_privkey_t types. Those are an abstract private key type that can be used to sign/encrypt any private key of pkcs11,x509 or openpgp types. Added support for PKCS11 in gnutls-cli/gnutls-serv.")
Signed-off-by: Jiasheng Jiang <jiashengjiangcool at gmail.com>

## Checklist
 * [ ] Commits have `Signed-off-by:` with name/author being identical to the commit author
 * [ ] Code modified for feature
 * [ ] Test suite updated with functionality tests
 * [ ] Test suite updated with negative tests
 * [ ] Documentation updated / NEWS entry present (for non-trivial changes)

## Reviewer's checklist:
 * [ ] Any issues marked for closing are addressed
 * [ ] There is a test suite reasonably covering new functionality or modifications
 * [ ] Function naming, parameters, return values, types, etc., are consistent and according to `CONTRIBUTION.md`
 * [ ] This feature/change has adequate documentation added
 * [ ] No obvious mistakes in the code

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