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Red Hat Product Errata RHSA-2019:2865 - Security Advisory
Issued:
2019-09-23
Updated:
2019-09-23

RHSA-2019:2865 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kpatch-patch security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for kpatch-patch is now available for RHEL-7.6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel.

Security Fix(es):

  • 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)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.6 x86_64
  • Red Hat Enterprise Linux Server - AUS 7.6 x86_64
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.6 ppc64le
  • Red Hat Enterprise Linux Server - TUS 7.6 x86_64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 7.6 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.6 x86_64

Fixes

  • BZ - 1750727 - CVE-2019-14835 kernel: vhost-net: guest to host kernel escape during migration

CVEs

  • CVE-2019-14835

References

  • https://access.redhat.com/security/updates/classification/#important
  • https://access.redhat.com/security/vulnerabilities/kernel-vhost
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.6

SRPM
kpatch-patch-3_10_0-957_35_1-1-1.el7.src.rpm SHA-256: 70d544114efdaec3d670a552a38c78a23acb65ddeeae0264cca95717d01a9c5e
x86_64
kpatch-patch-3_10_0-957_35_1-1-1.el7.x86_64.rpm SHA-256: dfcf997c6b8220a8b0ac0d41059127ca24b37c49f65b080dcb6210c7a9eb3d4f
kpatch-patch-3_10_0-957_35_1-debuginfo-1-1.el7.x86_64.rpm SHA-256: 46b246bcd865daace9ecd5a552eadac1e44cde9902368515d975b19eceec3914

Red Hat Enterprise Linux Server - AUS 7.6

SRPM
kpatch-patch-3_10_0-957_35_1-1-1.el7.src.rpm SHA-256: 70d544114efdaec3d670a552a38c78a23acb65ddeeae0264cca95717d01a9c5e
x86_64
kpatch-patch-3_10_0-957_35_1-1-1.el7.x86_64.rpm SHA-256: dfcf997c6b8220a8b0ac0d41059127ca24b37c49f65b080dcb6210c7a9eb3d4f
kpatch-patch-3_10_0-957_35_1-debuginfo-1-1.el7.x86_64.rpm SHA-256: 46b246bcd865daace9ecd5a552eadac1e44cde9902368515d975b19eceec3914

Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.6

SRPM
kpatch-patch-3_10_0-957_35_1-1-1.el7.src.rpm SHA-256: 70d544114efdaec3d670a552a38c78a23acb65ddeeae0264cca95717d01a9c5e
ppc64le
kpatch-patch-3_10_0-957_35_1-1-1.el7.ppc64le.rpm SHA-256: 7e357e63ad2072eed2d054281ba01db3268403430ef5cb1b6fb6cf74a87b46b9
kpatch-patch-3_10_0-957_35_1-debuginfo-1-1.el7.ppc64le.rpm SHA-256: 682bef88b31ad2653b01de89beb396038b74fc4cd663bc45f35c8bc7c1e0831e

Red Hat Enterprise Linux Server - TUS 7.6

SRPM
kpatch-patch-3_10_0-957_35_1-1-1.el7.src.rpm SHA-256: 70d544114efdaec3d670a552a38c78a23acb65ddeeae0264cca95717d01a9c5e
x86_64
kpatch-patch-3_10_0-957_35_1-1-1.el7.x86_64.rpm SHA-256: dfcf997c6b8220a8b0ac0d41059127ca24b37c49f65b080dcb6210c7a9eb3d4f
kpatch-patch-3_10_0-957_35_1-debuginfo-1-1.el7.x86_64.rpm SHA-256: 46b246bcd865daace9ecd5a552eadac1e44cde9902368515d975b19eceec3914

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 7.6

SRPM
kpatch-patch-3_10_0-957_35_1-1-1.el7.src.rpm SHA-256: 70d544114efdaec3d670a552a38c78a23acb65ddeeae0264cca95717d01a9c5e
ppc64le
kpatch-patch-3_10_0-957_35_1-1-1.el7.ppc64le.rpm SHA-256: 7e357e63ad2072eed2d054281ba01db3268403430ef5cb1b6fb6cf74a87b46b9
kpatch-patch-3_10_0-957_35_1-debuginfo-1-1.el7.ppc64le.rpm SHA-256: 682bef88b31ad2653b01de89beb396038b74fc4cd663bc45f35c8bc7c1e0831e

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.6

SRPM
kpatch-patch-3_10_0-957_35_1-1-1.el7.src.rpm SHA-256: 70d544114efdaec3d670a552a38c78a23acb65ddeeae0264cca95717d01a9c5e
x86_64
kpatch-patch-3_10_0-957_35_1-1-1.el7.x86_64.rpm SHA-256: dfcf997c6b8220a8b0ac0d41059127ca24b37c49f65b080dcb6210c7a9eb3d4f
kpatch-patch-3_10_0-957_35_1-debuginfo-1-1.el7.x86_64.rpm SHA-256: 46b246bcd865daace9ecd5a552eadac1e44cde9902368515d975b19eceec3914

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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