Signed-off-by: Glenn Washburn <developm...@efficientek.com>
---
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 751b48d6a..b628043e0 100644
--- a/grub-core/disk/luks2.c
+++ b/grub-core/disk/luks2.c
@@ -622,6 +622,17 @@ luks2_recover_key (grub_disk_t source,
grub_dprintf ("luks2", "Trying keyslot %"PRIuGRUB_UINT64_T"\n",
keyslot.slot_key);
+ /* 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.",
+ segment.slot_key, 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 = grub_log2ull (segment.sector_size);
--
2.27.0
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