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

drm/komeda: fix integer overflow in AFBC framebuffer size check

The AFBC framebuffer size validation calculates the minimum required
buffer size by adding the AFBC payload size to the framebuffer offset.
This addition is performed without checking for integer overflow.

If the addition oveflows, the size check may incorrectly succed and
allow userspace to provide an undersized drm_gem_object, potentially
leading to out-of-bounds memory access.

Add usage of check_add_overflow() to safely compute the minimum
required size and reject the framebuffer if an overflow is detected.
This makes the AFBC size validation more robust against malformed.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

https://git.kernel.org/stable/c/02ff8a7d3d0eecc546b9ab4c07b3d7c65d485583

https://git.kernel.org/stable/c/779ec12c85c9e4547519e3903a371a3b26a289de

https://git.kernel.org/stable/c/8165e8b28fdf392c2c7412518d602b4f193812a8

https://git.kernel.org/stable/c/872d923b852705054bc099af663da862fdc1097d

https://git.kernel.org/stable/c/a3a2a9bdc0f9c2d863a5a290cb2d4a565f7268e7

https://git.kernel.org/stable/c/d8a541906860aa3519b1874780d933c766918a7c

https://git.kernel.org/stable/c/e27b58095d7d3ac72f230e318838dee956258460

https://git.kernel.org/stable/c/fe1f80f8f6e8611ac6349b9d464e8750443390cf

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