Advisories ยป MGASA-2019-0288

Updated kernel packages fix security vulnerabilities

Publication date: 21 Sep 2019
Modification date: 17 Feb 2022
Type: security
Affected Mageia releases : 7
CVE: CVE-2019-14814 , CVE-2019-14815 , CVE-2019-14816 , CVE-2019-14821 , CVE-2019-14835 , CVE-2019-16714

Description

This kernel update is based on the upstream 5.2.16 and fixes at least
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).

In the Linux kernel before 5.2.14, rds6_inc_info_copy in net/rds/recv.c
allows attackers to obtain sensitive information from kernel stack memory
because tos and flags fields are not initialized (CVE-2019-16714)

WireGuard has been updated to 0.0.20190913.

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

References

SRPMS

7/core