Signed-off-by: Glenn Washburn <[email protected]>
---
grub-core/disk/luks2.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/grub-core/disk/luks2.c b/grub-core/disk/luks2.c
index 8cb11e899..c737797b9 100644
--- a/grub-core/disk/luks2.c
+++ b/grub-core/disk/luks2.c
@@ -629,6 +629,17 @@ 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
--
2.27.0
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