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Kernel: Fix integer overflow in framebuffer resolution handling

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This made it possible to map the E1000 MMIO range into userspace and
mess with the registers.

Thanks to @grigoritchy for finding this!

Fixes #2015.
This commit is contained in:
Andreas Kling 2020-04-29 09:35:19 +02:00
parent 18cfb9218a
commit 385dacce05
5 changed files with 23 additions and 23 deletions
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6
Libraries/LibC/sys/ioctl_numbers.h
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@ -36,9 +36,9 @@ struct winsize {
};
struct FBResolution {
int pitch;
int width;
int height;
unsigned pitch;
unsigned width;
unsigned height;
};
__END_DECLS