diff options
| author | Richard Weinberger <richard@nod.at> | 2016-09-16 11:45:24 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-09-21 16:37:07 +0200 |
| commit | 6a45b3628ce4dcf7498b39c87d475bab6e2a9b24 (patch) | |
| tree | fb203edbc99e09b1c34be42f203704a651530ddf /tools/perf | |
| parent | 8eac98b8beb4711c4ab61822cac077fd6660e820 (diff) | |
ovl: Fix info leak in ovl_lookup_temp()
The function uses the memory address of a struct dentry as unique id.
While the address-based directory entry is only visible to root it is IMHO
still worth fixing since the temporary name does not have to be a kernel
address. It can be any unique number. Replace it by an atomic integer
which is allowed to wrap around.
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org> # v3.18+
Fixes: e9be9d5e76e3 ("overlay filesystem")
Diffstat (limited to 'tools/perf')
0 files changed, 0 insertions, 0 deletions