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loader/i386/linux: Cast left shift to grub_uint32_t

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The Coverity complains that we might overflow into a negative value when
setting linux_params.kernel_alignment to (1 << align). We can remedy
this by casting it to grub_uint32_t.

Fixes: CID 473876

Signed-off-by: Alec Brown <alec.r.brown@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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Alec Brown authored and Daniel Kiper committed 2025-02-13 15:45:58 +01:00
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commit 490a6ab71c
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grub-core/loader/i386/linux.c
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@@ -806,7 +806,7 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
} }
linux_params.code32_start = prot_mode_target + lh.code32_start - GRUB_LINUX_BZIMAGE_ADDR; linux_params.code32_start = prot_mode_target + lh.code32_start - GRUB_LINUX_BZIMAGE_ADDR;
linux_params.kernel_alignment = (1 << align); linux_params.kernel_alignment = ((grub_uint32_t) 1 << align);
linux_params.ps_mouse = linux_params.padding11 = 0; linux_params.ps_mouse = linux_params.padding11 = 0;
linux_params.type_of_loader = GRUB_LINUX_BOOT_LOADER_TYPE; linux_params.type_of_loader = GRUB_LINUX_BOOT_LOADER_TYPE;