MGASA-2019-0287 - Updated kernel packages fix security vulnerabilities

Publication date: 21 Sep 2019
URL: https://advisories.mageia.org/MGASA-2019-0287.html
Type: security
Affected Mageia releases: 6
CVE: CVE-2019-14814,
     CVE-2019-14815,
     CVE-2019-14816,
     CVE-2019-14821,
     CVE-2019-14835

This kernel update is based on the upstream 4.14.145 and fixes atleast
the following security issues:

There is heap-based buffer overflow in the marvell wifi chip driver that
allows local users to cause a denial of service(system crash) or possibly
execute arbitrary code (CVE-2019-14814, CVE-2019-14815, CVE-2019-14816).

An out-of-bounds access issue was found in the way Linux kernel's KVM
hypervisor implements the Coalesced MMIO write operation. It operates on
an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write
indices 'ring->first' and 'ring->last' value could be supplied by a host
user-space process. An unprivileged host user or process with access to
'/dev/kvm' device could use this flaw to crash the host kernel, resulting
in a denial of service or potentially escalating privileges on the system
(CVE-2019-14821).

A buffer overflow flaw was found in the way Linux kernel's vhost
functionality that translates virtqueue buffers to IOVs, logged the buffer
descriptors during migration. A privileged guest user able to pass
descriptors with invalid length to the host when migration is underway,
could use this flaw to increase their privileges on the host
(CVE-2019-14835).

WireGuard has been updated to 0.0.20190913.

For other uptstream fixes in this update, see the referenced changelogs.

References:
- https://bugs.mageia.org/show_bug.cgi?id=25453
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.138
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.139
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.140
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.141
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.142
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.143
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.144
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.145
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14814
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14815
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14816
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14821
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14835

SRPMS:
- 6/core/kernel-4.14.145-2.mga6
- 6/core/kernel-userspace-headers-4.14.145-2.mga6
- 6/core/kmod-vboxadditions-6.0.10-4.mga6
- 6/core/kmod-virtualbox-6.0.10-4.mga6
- 6/core/kmod-xtables-addons-2.13-92.mga6
- 6/core/wireguard-tools-0.0.20190913-1.mga6