diff options
Diffstat (limited to 'block/partitions/aix.c')
| -rw-r--r-- | block/partitions/aix.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/block/partitions/aix.c b/block/partitions/aix.c index f3c4174e003e..689837deba27 100644 --- a/block/partitions/aix.c +++ b/block/partitions/aix.c @@ -208,7 +208,14 @@ int aix_partition(struct parsed_partitions *state) if (n) { int foundlvs = 0; - for (i = 0; foundlvs < numlvs && i < state->limit; i += 1) { + /* + * The lvd array was read as a single sector; only the + * struct lvd entries that fit in it are valid. Bound the + * scan so an on-disk numlvs larger than that cannot walk + * the read buffer out of bounds. + */ + for (i = 0; foundlvs < numlvs && i < state->limit && + i < SECTOR_SIZE / (int)sizeof(struct lvd); i++) { lvip[i].pps_per_lv = be16_to_cpu(p[i].num_lps); if (lvip[i].pps_per_lv) foundlvs += 1; |