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| author | Kees Cook <keescook@chromium.org> | 2017-08-09 20:43:17 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2017-08-17 16:28:37 -0700 |
| commit | d7caa33687cea218b6d68beea89d10a45a901e19 (patch) | |
| tree | 734350f4d0037478c7064db3a5f637ececc6fca7 /fs | |
| parent | 520eccdfe187591a51ea9ab4c1a024ae4d0f68d9 (diff) | |
| download | linux-stable-d7caa33687cea218b6d68beea89d10a45a901e19.tar.gz linux-stable-d7caa33687cea218b6d68beea89d10a45a901e19.tar.bz2 linux-stable-d7caa33687cea218b6d68beea89d10a45a901e19.zip | |
pstore: Make default pstorefs root dir perms 0750
Currently only DMESG and CONSOLE record types are protected, and it isn't
obvious that they are using a capability check. Instead switch to explicit
root directory mode of 0750 to keep files private by default. This will
allow the removal of the capability check, which was non-obvious and
forces a process to have possibly too much privilege when simple post-boot
chgrp for readers would be possible without it.
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/pstore/inode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index fefd22611cf6..f1e88b695090 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -471,7 +471,7 @@ static int pstore_fill_super(struct super_block *sb, void *data, int silent) inode = pstore_get_inode(sb); if (inode) { - inode->i_mode = S_IFDIR | 0755; + inode->i_mode = S_IFDIR | 0750; inode->i_op = &pstore_dir_inode_operations; inode->i_fop = &simple_dir_operations; inc_nlink(inode); |