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| author | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2019-07-25 15:33:59 +0200 |
|---|---|---|
| committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2019-07-25 15:40:12 +0200 |
| commit | e7dda79015d1a09ce2764b27137b5de08a3268cb (patch) | |
| tree | 479ba54a3cb403d539431e1da177a60a71f61b61 /lib/sqfs/frag_reader.c | |
| parent | f8346498604f417415c131e3c6dbf66e6643254e (diff) | |
Fix fragment reader out of bounds read when loading table
This commit fixes a bug in the fragment table reader where the reader
tries to read data into an out of bounds location due to an oversight
in size calculation.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/sqfs/frag_reader.c')
| -rw-r--r-- | lib/sqfs/frag_reader.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/sqfs/frag_reader.c b/lib/sqfs/frag_reader.c index 721286c..51b40e9 100644 --- a/lib/sqfs/frag_reader.c +++ b/lib/sqfs/frag_reader.c @@ -110,8 +110,8 @@ frag_reader_t *frag_reader_create(sqfs_super_t *super, int fd, goto fail; diff = SQFS_META_BLOCK_SIZE / sizeof(tbl[0]); - if (diff > count) - diff = count; + if (diff > (count - j)) + diff = count - j; if (meta_reader_read(m, tbl + j, diff * sizeof(tbl[0]))) goto fail; |