SWRDKV-5447: ocdm-widevine defect fix.

[jianwang-brcm]

What it does: clamps the IV memcpy length to sizeof(iv) (16) so an attacker-supplied sampleInfo->ivLength cannot overflow the stack buffer.

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[Copilot]

Pull request overview

This PR hardens the MediaKeySession decryption/notification paths in the Widevine OCDM integration, primarily addressing memory-safety risks from client-controlled inputs.

Changes:

• Clamp the IV memcpy length to the IV buffer size to prevent stack overflow in MediaKeySession::Decrypt.
• Add m_piCallback initialization and null-guards before invoking callback methods.
• Add SVP in-band header size validation and a token-size guard to prevent out-of-bounds copies when handling secure buffers.

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Pull request overview

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Pull request overview

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

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

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 2 comments.