[Ksplice-Fedora-25-updates] New Ksplice updates for Fedora 25 (FEDORA-2017-17d1c05236)

[Oracle Ksplice]

Synopsis: FEDORA-2017-17d1c05236 can now be patched using Ksplice
CVEs: CVE-2016-9604 CVE-2017-6951 CVE-2017-7472 CVE-2017-7477

Systems running Fedora 25 can now use Ksplice to patch against the
latest Fedora kernel update, FEDORA-2017-17d1c05236.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Fedora 25
install these updates.

On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
these updates will be installed automatically and you do not need to
take any action.

Alternatively, you can install these updates by running:

# /usr/sbin/uptrack-upgrade -y


DESCRIPTION

* CVE-2016-9604: Permission bypass when creating key using keyring subsystem.

A missing check when an user create a key beginning with '.' could lead
to a permission bypass. A local attacker could use this flaw to access
sensitive information.


* CVE-2017-6951: Denial-of-service from userspace via dead security keys.

Dead security keys were improperly assigned a type with name "dead",
which allowed them to be accessed by users with the
key_get_type_from_user() syscall, causing a kernel panic and
denial-of-service.


* CVE-2017-7472: Denial-of-service when setting default request-key keyring.

A logic error when a user set default request-key keyring multiple
times could lead to a memory leak. A local attacker could use this flaw
to exhaust kernel memory and cause a kernel panic.


* Denial-of-service due to negative isolated memory stats.

A race condition could allow the count of isolated memory regions to go
negative, potentially sending the kernel into an infinite loop and
causing a denial-of-service.


* CVE-2017-7477: Remote Denial-of-service in 802.1AE implementation.

A flaw in the handling of memory allocation in the macsec driver can
result in a buffer overflow.  A remote attacker could use this flaw to
cause a denial-of-service.

SUPPORT

Ksplice support is available at ksplice-support_ww at oracle.com.