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luks2: Error check segment.sector_size

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Signed-off-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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Glenn Washburn authored and Daniel Kiper committed 2020-12-12 01:19:05 +01:00
1 parent cf3a3acff0
commit b298eed001
1 file changed
+11
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grub-core/disk/luks2.c
+11
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@@ -615,6 +615,17 @@ luks2_recover_key (grub_disk_t source,
grub_dprintf ("luks2", "Trying keyslot \"%"PRIuGRUB_UINT64_T"\"\n", keyslot.idx);
/* Sector size should be one of 512, 1024, 2048, or 4096. */
if (!(segment.sector_size == 512 || segment.sector_size == 1024 ||
segment.sector_size == 2048 || segment.sector_size == 4096))
{
grub_dprintf ("luks2", "Segment \"%"PRIuGRUB_UINT64_T"\" sector"
" size %"PRIuGRUB_UINT64_T" is not one of"
" 512, 1024, 2048, or 4096\n",
segment.idx, segment.sector_size);
continue;
}
/* Set up disk according to keyslot's segment. */
crypt->offset_sectors = grub_divmod64 (segment.offset, segment.sector_size, NULL);
crypt->log_sector_size = sizeof (unsigned int) * 8