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Change History

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Check index msg_id before read or write

[WHAT]
msg_id is used as an array index and it cannot be a negative value, and
therefore cannot be equal to MOD_HDCP_MESSAGE_ID_INVALID (-1).

[HOW]
Check whether msg_id is valid before reading and setting.

This fixes 4 OVERRUN issues reported by Coverity.

kernel.org https://git.kernel.org/stable/c/59d99deb330af206a4541db0c4da8f73880fba03 [No types assigned]

kernel.org https://git.kernel.org/stable/c/9933eca6ada0cd612e19522e7a319bcef464c0eb [No types assigned]

kernel.org https://git.kernel.org/stable/c/a31ea49dc8064a557565725cf045944307476a6e [No types assigned]

kernel.org https://git.kernel.org/stable/c/ae91ffbc8b8d942e3e7f188728cad557b7ed5ee4 [No types assigned]

kernel.org https://git.kernel.org/stable/c/b5b8837d066cc182ff69fb5629ad32ade5484567 [No types assigned]

kernel.org https://git.kernel.org/stable/c/fbb0701af9734cff13917a4b98b5ee9da2fde48d [No types assigned]