[gnutls-devel] GnuTLS | src/pkcs11.c: Add check for gnutls_malloc and gnutls_strdup (!2002)

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Jiasheng Jiang created a merge request: https://gitlab.com/gnutls/gnutls/-/merge_requests/2002

Project:Branches: purdue-university1/gnutls:patch25 to gnutls/gnutls:master
Author:   Jiasheng Jiang




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

* src/pkcs11.c: Add check for gnutls_malloc and gnutls_strdup

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

Fixes: 44541d171 ("p11tool: copy vendor query attributes when listing privkeys")
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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