diff options
| author | Lizhi Xu <lizhi.xu@windriver.com> | 2025-06-06 13:16:16 +0800 |
|---|---|---|
| committer | Konstantin Komarov <almaz.alexandrovich@paragon-software.com> | 2025-06-23 19:23:03 +0200 |
| commit | e841ecb139339602bc1853f5f09daa5d1ea920a2 (patch) | |
| tree | 787135756f3a53b1a019684902df8543eb762fb7 | |
| parent | b1e9d89408f402858c00103f9831b25ffa0994d3 (diff) | |
fs/ntfs3: Add sanity check for file name
The length of the file name should be smaller than the directory entry size.
Reported-by: syzbot+598057afa0f49e62bd23@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=598057afa0f49e62bd23
Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
| -rw-r--r-- | fs/ntfs3/dir.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ntfs3/dir.c b/fs/ntfs3/dir.c index 4aab4d54b171..1b5c865a0339 100644 --- a/fs/ntfs3/dir.c +++ b/fs/ntfs3/dir.c @@ -304,6 +304,9 @@ static inline bool ntfs_dir_emit(struct ntfs_sb_info *sbi, if (sbi->options->nohidden && (fname->dup.fa & FILE_ATTRIBUTE_HIDDEN)) return true; + if (fname->name_len + sizeof(struct NTFS_DE) > le16_to_cpu(e->size)) + return true; + name_len = ntfs_utf16_to_nls(sbi, fname->name, fname->name_len, name, PATH_MAX); if (name_len <= 0) { |