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| author | Jan Kara <jack@suse.cz> | 2018-12-12 14:29:20 +0100 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2018-12-12 15:48:49 +0100 |
| commit | d288d95842f1503414b7eebce3773bac3390457e (patch) | |
| tree | cf00bbda980da51717881fae02b41854c57a0bac | |
| parent | 3e159b9553e4024cbdaa25bb8059f79f47c26925 (diff) | |
| download | linux-d288d95842f1503414b7eebce3773bac3390457e.tar.bz2 | |
udf: Fix BUG on corrupted inode
When inode is corrupted so that extent type is invalid, some functions
(such as udf_truncate_extents()) will just BUG. Check that extent type
is valid when loading the inode to memory.
Reported-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
| -rw-r--r-- | fs/udf/inode.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 5df554a9f9c9..ae796e10f68b 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -1357,6 +1357,12 @@ reread: iinfo->i_alloc_type = le16_to_cpu(fe->icbTag.flags) & ICBTAG_FLAG_AD_MASK; + if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_SHORT && + iinfo->i_alloc_type != ICBTAG_FLAG_AD_LONG && + iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) { + ret = -EIO; + goto out; + } iinfo->i_unique = 0; iinfo->i_lenEAttr = 0; iinfo->i_lenExtents = 0; |