This is the fourth patch release of the 1.2.z release branch of runc. It
includes a fix for a regression introduced in 1.2.0 related to the
default device list.
-
Re-add tun/tap devices to built-in allowed devices lists.
In runc 1.2.0 we removed these devices from the default allow-list
(which were added seemingly by accident early in Docker's history) as
a precaution in order to try to reduce the attack surface of device
inodes available to most containers (#3468). At the time we thought
that the vast majority of users using tun/tap would already be
specifying what devices they need (such as by using--devicewith
Docker/Podman) as opposed to doing themknodmanually, and thus
there would've been no user-visible change.Unfortunately, it seems that this regressed a noticeable number of
users (and not all higher-level tools provide easy ways to specify
devices to allow) and so this change needed to be reverted. Users
that do not need these devices are recommended to explicitly disable
them by adding deny rules in their container configuration. (#4555,
#4556)
Static Linking Notices
The runc binary distributed with this release are statically linked with
the following GNU LGPL-2.1 licensed libraries, with runc acting
as a "work that uses the Library":
The versions of these libraries were not modified from their upstream versions,
but in order to comply with the LGPL-2.1 (§6(a)), we have attached the
complete source code for those libraries which (when combined with the attached
runc source code) may be used to exercise your rights under the LGPL-2.1.
However we strongly suggest that you make use of your distribution's packages
or download them from the authoritative upstream sources, especially since
these libraries are related to the security of your containers.
Thanks to all of the contributors who made this release possible:
- Akihiro Suda [email protected]
- Aleksa Sarai [email protected]
- Kir Kolyshkin [email protected]
- lifubang [email protected]
Signed-off-by: Aleksa Sarai [email protected]