diff options
| author | Quentin Casasnovas <quentin.casasnovas@oracle.com> | 2015-03-03 16:31:38 +0100 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-03-14 15:37:22 -0400 |
| commit | 218c886394e239706714caec1fb5d7c47fcb54c8 (patch) | |
| tree | 9cfe48c09830fe546f793bf7834ed6edfa86184d /fs | |
| parent | 0ab9252919f9a72aa381cac67ac77d5c470a7215 (diff) | |
Btrfs:__add_inode_ref: out of bounds memory read when looking for extended ref.
commit dd9ef135e3542ffc621c4eb7f0091870ec7a1504 upstream.
Improper arithmetics when calculting the address of the extended ref could
lead to an out of bounds memory read and kernel panic.
Signed-off-by: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/tree-log.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index ee1c60454a5f..8b40b35e5e0e 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -1010,7 +1010,7 @@ again: base = btrfs_item_ptr_offset(leaf, path->slots[0]); while (cur_offset < item_size) { - extref = (struct btrfs_inode_extref *)base + cur_offset; + extref = (struct btrfs_inode_extref *)(base + cur_offset); victim_name_len = btrfs_inode_extref_name_len(leaf, extref); |