[CPU]Coverity scan issues

[chenhu-wang]

Details:

• nullptr dereference, integer overflow, remove dead code, remove unused computation

Tickets:

• CVS-174700

[chenhu-wang]

@maxnick, could you please take a look?

[Copilot]

Pull Request Overview

This PR addresses Coverity scan issues by fixing potential null pointer dereferences, integer overflow, and removing dead code to improve code safety and quality.

• Added bounds checking and null pointer validation through OPENVINO_ASSERT statements
• Removed unused computation and dead code to eliminate unnecessary operations
• Fixed loop bounds to prevent potential integer overflow conditions

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/plugins/intel_cpu/src/shape_inference/static_shape.hpp	Added bounds checking for array access operator
src/plugins/intel_cpu/src/shape_inference/custom/reshape.cpp	Removed unused computation that was redundant
src/plugins/intel_cpu/src/nodes/tensoriterator.cpp	Added validation for loop body condition output index
src/plugins/intel_cpu/src/nodes/strided_slice.cpp	Fixed loop bounds and added size validation
src/plugins/intel_cpu/src/nodes/log_softmax.cpp	Added axis bounds validation
src/plugins/intel_cpu/src/nodes/input.cpp	Added null pointer check for external memory descriptor
src/plugins/intel_cpu/src/nodes/executors/dnnl/dnnl_convolution_primitive.cpp	Removed dead return statement
src/plugins/intel_cpu/src/nodes/deconv.cpp	Added validation for DNNL compatible weights

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[liubo-intel]

current changes LGTM just one minor comments in static_shape.hpp.
and another question is: from Jaroslaw's comments in the ticket. it seems some fix not included in this pr: e.g.

/src/plugins/intel_cpu/src/nodes/fullyconnected.cpp
/src/plugins/intel_cpu/src/nodes/subgraph.cpp
/src/plugins/intel_cpu/src/nodes/color_convert.cpp
/src/plugins/intel_cpu/src/nodes/llm_mlp.cpp

I don't know whether because there's another step/plan for these left fix?

[chenhu-wang]

current changes LGTM just one minor comments in static_shape.hpp. and another question is: from Jaroslaw's comments in the ticket. it seems some fix not included in this pr: e.g.

/src/plugins/intel_cpu/src/nodes/fullyconnected.cpp
/src/plugins/intel_cpu/src/nodes/subgraph.cpp
/src/plugins/intel_cpu/src/nodes/color_convert.cpp
/src/plugins/intel_cpu/src/nodes/llm_mlp.cpp

I don't know whether because there's another step/plan for these left fix?

Others are false positive.