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limine-install: Fix buffer overflow bug with new stage 2 alignments

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This commit is contained in:
mintsuki 2021-03-06 03:57:13 +01:00
parent 32a4539313
commit 249d058931
1 changed files with 1 additions and 3 deletions
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4
limine-install.c
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@ -329,8 +329,6 @@ int main(int argc, char *argv[]) {
// Default split of stage2 for MBR (consecutive in post MBR gap)
uint64_t stage2_loc_a = 512;
uint64_t stage2_loc_b = stage2_loc_a + stage2_size_a;
if (stage2_loc_b & (512 - 1))
stage2_loc_b = (stage2_loc_b + 512) & ~(512 - 1);
if (gpt) {
if (argc > 3) {
@ -453,7 +451,7 @@ int main(int argc, char *argv[]) {
// Write the rest of stage 2 to the device
device_write(&bootloader_img[512], stage2_loc_a, stage2_size_a);
device_write(&bootloader_img[512 + stage2_size_a],
stage2_loc_b, stage2_size_b);
stage2_loc_b, stage2_size - stage2_size_a);
// Hardcode in the bootsector the location of stage 2 halves
device_write(&stage2_size_a, 0x1a4 + 0, sizeof(uint16_t));