The vfs checks if a task has the appropriate access for get and set operations, but it cannot do that for the list operation; the file system must check for that itself.
Signed-off-by: Andreas Gruenbacher <[email protected]> --- fs/jffs2/xattr_trusted.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/jffs2/xattr_trusted.c b/fs/jffs2/xattr_trusted.c index ceaf9c6..bbd20c1 100644 --- a/fs/jffs2/xattr_trusted.c +++ b/fs/jffs2/xattr_trusted.c @@ -39,6 +39,9 @@ static size_t jffs2_trusted_listxattr(struct dentry *dentry, char *list, { size_t retlen = XATTR_TRUSTED_PREFIX_LEN + name_len + 1; + if (!capable(CAP_SYS_ADMIN)) + return 0; + if (list && retlen<=list_size) { strcpy(list, XATTR_TRUSTED_PREFIX); strcpy(list + XATTR_TRUSTED_PREFIX_LEN, name); -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
