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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-08 20:40:34 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-08 20:40:34 +0200
commit677375cef8cb7763ef620e007873117b9bad72a0 (patch)
tree9bddb2ce01662aee47f9232a1c92b4416105b813 /fs/ubifs
parentMerge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/t... (diff)
parentfscrypt: correct collision claim for digested names (diff)
downloadlinux-677375cef8cb7763ef620e007873117b9bad72a0.tar.xz
linux-677375cef8cb7763ef620e007873117b9bad72a0.zip
Merge tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt
Pull fscrypt updates from Ted Ts'o: "Only bug fixes and cleanups for this merge window" * tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt: fscrypt: correct collision claim for digested names MAINTAINERS: fscrypt: update mailing list, patchwork, and git ext4: clean up ext4_match() and callers f2fs: switch to using fscrypt_match_name() ext4: switch to using fscrypt_match_name() fscrypt: introduce helper function for filename matching fscrypt: avoid collisions when presenting long encrypted filenames f2fs: check entire encrypted bigname when finding a dentry ubifs: check for consistent encryption contexts in ubifs_lookup() f2fs: sync f2fs_lookup() with ext4_lookup() ext4: remove "nokey" check from ext4_lookup() fscrypt: fix context consistency check when key(s) unavailable fscrypt: Remove __packed from fscrypt_policy fscrypt: Move key structure and constants to uapi fscrypt: remove fscrypt_symlink_data_len() fscrypt: remove unnecessary checks for NULL operations
Diffstat (limited to 'fs/ubifs')
-rw-r--r--fs/ubifs/dir.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index b777bddaa1dd..8049851cac42 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -285,6 +285,15 @@ static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
goto out_dent;
}
+ if (ubifs_crypt_is_encrypted(dir) &&
+ (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
+ !fscrypt_has_permitted_context(dir, inode)) {
+ ubifs_warn(c, "Inconsistent encryption contexts: %lu/%lu",
+ dir->i_ino, inode->i_ino);
+ err = -EPERM;
+ goto out_inode;
+ }
+
done:
kfree(dent);
fscrypt_free_filename(&nm);
@@ -295,6 +304,8 @@ done:
d_add(dentry, inode);
return NULL;
+out_inode:
+ iput(inode);
out_dent:
kfree(dent);
out_fname: