Sigurnosni nedostaci jezgre operacijskog sustava

==========================================================================
Ubuntu Security Notice USN-4302-1
March 17, 2020

linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gke-4.15, linux-hwe,
linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
– linux: Linux kernel
– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
– linux-gke-4.15: Linux kernel for Google Container Engine (GKE) systems
– linux-kvm: Linux kernel for cloud environments
– linux-raspi2: Linux kernel for Raspberry Pi 2
– linux-snapdragon: Linux kernel for Snapdragon processors
– linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
– linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
– linux-hwe: Linux hardware enablement (HWE) kernel

Details:

Paulo Bonzini discovered that the KVM hypervisor implementation in the
Linux kernel could improperly let a nested (level 2) guest access the
resources of a parent (level 1) guest in certain situations. An attacker
could use this to expose sensitive information. (CVE-2020-2732)

Gregory Herrero discovered that the fix for CVE-2019-14615 to address the
Linux kernel not properly clearing data structures on context switches for
certain Intel graphics processors was incomplete. A local attacker could
use this to expose sensitive information. (CVE-2020-8832)

It was discovered that the IPMI message handler implementation in the Linux
kernel did not properly deallocate memory in certain situations. A local
attacker could use this to cause a denial of service (kernel memory
exhaustion). (CVE-2019-19046)

It was discovered that the Intel WiMAX 2400 driver in the Linux kernel did
not properly deallocate memory in certain situations. A local attacker
could use this to cause a denial of service (kernel memory exhaustion).
(CVE-2019-19051)

It was discovered that the Marvell Wi-Fi device driver in the Linux kernel
did not properly deallocate memory in certain error conditions. A local
attacker could use this to possibly cause a denial of service (kernel
memory exhaustion). (CVE-2019-19056)

It was discovered that the Intel(R) Wi-Fi device driver in the Linux kernel
device driver in the Linux kernel did not properly deallocate memory in
certain error conditions. A local attacker could possibly use this to cause
a denial of service (kernel memory exhaustion). (CVE-2019-19058)

It was discovered that the Brocade BFA Fibre Channel device driver in the
Linux kernel did not properly deallocate memory in certain error
conditions. A local attacker could possibly use this to cause a denial of
service (kernel memory exhaustion). (CVE-2019-19066)

It was discovered that the Realtek RTL8xxx USB Wi-Fi device driver in the
Linux kernel did not properly deallocate memory in certain error
conditions. A local attacker could possibly use this to cause a denial of
service (kernel memory exhaustion). (CVE-2019-19068)

It was discovered that ZR364XX Camera USB device driver for the Linux
kernel did not properly initialize memory. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2019-15217)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
linux-image-4.15.0-1055-gke 4.15.0-1055.58
linux-image-4.15.0-1056-kvm 4.15.0-1056.57
linux-image-4.15.0-1057-raspi2 4.15.0-1057.61
linux-image-4.15.0-1063-aws 4.15.0-1063.67
linux-image-4.15.0-1074-snapdragon 4.15.0-1074.81
linux-image-4.15.0-91-generic 4.15.0-91.92
linux-image-4.15.0-91-generic-lpae 4.15.0-91.92
linux-image-4.15.0-91-lowlatency 4.15.0-91.92
linux-image-aws 4.15.0.1063.64
linux-image-aws-lts-18.04 4.15.0.1063.64
linux-image-generic 4.15.0.91.83
linux-image-generic-lpae 4.15.0.91.83
linux-image-gke 4.15.0.1055.59
linux-image-gke-4.15 4.15.0.1055.59
linux-image-kvm 4.15.0.1056.56
linux-image-lowlatency 4.15.0.91.83
linux-image-powerpc-e500mc 4.15.0.91.83
linux-image-powerpc-smp 4.15.0.91.83
linux-image-powerpc64-emb 4.15.0.91.83
linux-image-powerpc64-smp 4.15.0.91.83
linux-image-raspi2 4.15.0.1057.55
linux-image-snapdragon 4.15.0.1074.77
linux-image-virtual 4.15.0.91.83

Ubuntu 16.04 LTS:
linux-image-4.15.0-1058-gcp 4.15.0-1058.62
linux-image-4.15.0-1063-aws 4.15.0-1063.67~16.04.1
linux-image-4.15.0-91-generic 4.15.0-91.92~16.04.1
linux-image-4.15.0-91-generic-lpae 4.15.0-91.92~16.04.1
linux-image-4.15.0-91-lowlatency 4.15.0-91.92~16.04.1
linux-image-aws-hwe 4.15.0.1063.63
linux-image-gcp 4.15.0.1058.72
linux-image-generic-hwe-16.04 4.15.0.91.101
linux-image-generic-lpae-hwe-16.04 4.15.0.91.101
linux-image-gke 4.15.0.1058.72
linux-image-lowlatency-hwe-16.04 4.15.0.91.101
linux-image-oem 4.15.0.91.101
linux-image-virtual-hwe-16.04 4.15.0.91.101

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
https://usn.ubuntu.com/4302-1
CVE-2019-15217, CVE-2019-19046, CVE-2019-19051, CVE-2019-19056,
CVE-2019-19058, CVE-2019-19066, CVE-2019-19068, CVE-2020-2732,
CVE-2020-8832

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.15.0-91.92
https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1063.67
https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1055.58
https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1056.57
https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1057.61
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1074.81
https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1063.67~16.04.1
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1058.62
https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-91.92~16.04.1

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==========================================================================
Ubuntu Security Notice USN-4303-2
March 17, 2020

linux-lts-xenial, linux-aws vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 14.04 ESM

Summary:

The system could be made to expose sensitive information.

Software Description:
– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
– linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

USN-4303-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 ESM.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 ESM:
linux-image-4.4.0-1064-aws 4.4.0-1064.68
linux-image-4.4.0-176-generic 4.4.0-176.206~14.04.1
linux-image-4.4.0-176-generic-lpae 4.4.0-176.206~14.04.1
linux-image-4.4.0-176-lowlatency 4.4.0-176.206~14.04.1
linux-image-4.4.0-176-powerpc-e500mc 4.4.0-176.206~14.04.1
linux-image-4.4.0-176-powerpc-smp 4.4.0-176.206~14.04.1
linux-image-4.4.0-176-powerpc64-emb 4.4.0-176.206~14.04.1
linux-image-4.4.0-176-powerpc64-smp 4.4.0-176.206~14.04.1
linux-image-aws 4.4.0.1064.65
linux-image-generic-lpae-lts-xenial 4.4.0.176.155
linux-image-generic-lts-xenial 4.4.0.176.155
linux-image-lowlatency-lts-xenial 4.4.0.176.155
linux-image-powerpc-e500mc-lts-xenial 4.4.0.176.155
linux-image-powerpc-smp-lts-xenial 4.4.0.176.155
linux-image-powerpc64-emb-lts-xenial 4.4.0.176.155
linux-image-powerpc64-smp-lts-xenial 4.4.0.176.155
linux-image-virtual-lts-xenial 4.4.0.176.155

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4303-2
https://usn.ubuntu.com/4303-1
CVE-2020-2732

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==========================================================================
Ubuntu Security Notice USN-4303-1
March 17, 2020

linux, linux-aws, linux-kvm vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 16.04 LTS

Summary:

The system could be made to expose sensitive information.

Software Description:
– linux: Linux kernel
– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
– linux-kvm: Linux kernel for cloud environments

Details:

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
linux-image-4.4.0-1068-kvm 4.4.0-1068.75
linux-image-4.4.0-1104-aws 4.4.0-1104.115
linux-image-4.4.0-176-generic 4.4.0-176.206
linux-image-4.4.0-176-generic-lpae 4.4.0-176.206
linux-image-4.4.0-176-lowlatency 4.4.0-176.206
linux-image-4.4.0-176-powerpc-e500mc 4.4.0-176.206
linux-image-4.4.0-176-powerpc-smp 4.4.0-176.206
linux-image-4.4.0-176-powerpc64-emb 4.4.0-176.206
linux-image-4.4.0-176-powerpc64-smp 4.4.0-176.206
linux-image-aws 4.4.0.1104.108
linux-image-generic 4.4.0.176.184
linux-image-generic-lpae 4.4.0.176.184
linux-image-kvm 4.4.0.1068.68
linux-image-lowlatency 4.4.0.176.184
linux-image-powerpc-e500mc 4.4.0.176.184
linux-image-powerpc-smp 4.4.0.176.184
linux-image-powerpc64-emb 4.4.0.176.184
linux-image-powerpc64-smp 4.4.0.176.184
linux-image-virtual 4.4.0.176.184

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4303-1
CVE-2020-2732

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-176.206
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1104.115
https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1068.75

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==========================================================================
Ubuntu Security Notice USN-4300-1
March 16, 2020

linux, linux-aws, linux-gcp, linux-gcp-5.3, linux-gke-5.3, linux-hwe,
linux-kvm, linux-oracle, linux-raspi2, linux-raspi2-5.3 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 19.10
– Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
– linux: Linux kernel
– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
– linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
– linux-kvm: Linux kernel for cloud environments
– linux-oracle: Linux kernel for Oracle Cloud systems
– linux-raspi2: Linux kernel for Raspberry Pi 2
– linux-gcp-5.3: Linux kernel for Google Cloud Platform (GCP) systems
– linux-gke-5.3: Linux kernel for Google Container Engine (GKE) systems
– linux-hwe: Linux hardware enablement (HWE) kernel
– linux-raspi2-5.3: Linux kernel for Raspberry Pi 2

Details:

It was discovered that the KVM implementation in the Linux kernel, when
paravirtual TLB flushes are enabled in guests, the hypervisor in some
situations could miss deferred TLB flushes or otherwise mishandle them. An
attacker in a guest VM could use this to expose sensitive information (read
memory from another guest VM). (CVE-2019-3016)

It was discovered that the Afatech AF9005 DVB-T USB device driver in the
Linux kernel did not properly deallocate memory in certain error
conditions. A local attacker could possibly use this to cause a denial of
service (kernel memory exhaustion). (CVE-2019-18809)

It was discovered that the Intel(R) XL710 Ethernet Controller device driver
in the Linux kernel did not properly deallocate memory in certain error
conditions. A local attacker could possibly use this to cause a denial of
service (kernel memory exhaustion). (CVE-2019-19043)

It was discovered that the RPMSG character device interface in the Linux
kernel did not properly deallocate memory in certain error conditions. A
local attacker could possibly use this to cause a denial of service (kernel
memory exhaustion). (CVE-2019-19053)

It was discovered that the Serial Peripheral Interface (SPI) driver in the
Linux kernel device driver in the Linux kernel did not properly deallocate
memory in certain error conditions. A local attacker could possibly use
this to cause a denial of service (kernel memory exhaustion).
(CVE-2019-19064)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.10:
linux-image-5.3.0-1011-oracle 5.3.0-1011.12
linux-image-5.3.0-1012-kvm 5.3.0-1012.13
linux-image-5.3.0-1013-aws 5.3.0-1013.14
linux-image-5.3.0-1014-gcp 5.3.0-1014.15
linux-image-5.3.0-1019-raspi2 5.3.0-1019.21
linux-image-5.3.0-42-generic 5.3.0-42.34
linux-image-5.3.0-42-generic-lpae 5.3.0-42.34
linux-image-5.3.0-42-lowlatency 5.3.0-42.34
linux-image-5.3.0-42-snapdragon 5.3.0-42.34
linux-image-aws 5.3.0.1013.15
linux-image-gcp 5.3.0.1014.15
linux-image-generic 5.3.0.42.36
linux-image-generic-lpae 5.3.0.42.36
linux-image-gke 5.3.0.1014.15
linux-image-kvm 5.3.0.1012.14
linux-image-lowlatency 5.3.0.42.36
linux-image-oracle 5.3.0.1011.12
linux-image-raspi2 5.3.0.1019.16
linux-image-snapdragon 5.3.0.42.36
linux-image-virtual 5.3.0.42.36

Ubuntu 18.04 LTS:
linux-image-5.3.0-1014-gcp 5.3.0-1014.15~18.04.1
linux-image-5.3.0-1014-gke 5.3.0-1014.15~18.04.1
linux-image-5.3.0-1019-raspi2 5.3.0-1019.21~18.04.1
linux-image-5.3.0-42-generic 5.3.0-42.34~18.04.1
linux-image-5.3.0-42-generic-lpae 5.3.0-42.34~18.04.1
linux-image-5.3.0-42-lowlatency 5.3.0-42.34~18.04.1
linux-image-gcp-edge 5.3.0.1014.13
linux-image-generic-hwe-18.04 5.3.0.42.99
linux-image-generic-lpae-hwe-18.04 5.3.0.42.99
linux-image-gke-5.3 5.3.0.1014.4
linux-image-lowlatency-hwe-18.04 5.3.0.42.99
linux-image-raspi2-hwe-18.04 5.3.0.1019.8
linux-image-snapdragon-hwe-18.04 5.3.0.42.99
linux-image-virtual-hwe-18.04 5.3.0.42.99

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4300-1
CVE-2019-18809, CVE-2019-19043, CVE-2019-19053, CVE-2019-19056,
CVE-2019-19058, CVE-2019-19059, CVE-2019-19064, CVE-2019-19066,
CVE-2019-19068, CVE-2019-3016, CVE-2020-2732

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.3.0-42.34
https://launchpad.net/ubuntu/+source/linux-aws/5.3.0-1013.14
https://launchpad.net/ubuntu/+source/linux-gcp/5.3.0-1014.15
https://launchpad.net/ubuntu/+source/linux-kvm/5.3.0-1012.13
https://launchpad.net/ubuntu/+source/linux-oracle/5.3.0-1011.12
https://launchpad.net/ubuntu/+source/linux-raspi2/5.3.0-1019.21
https://launchpad.net/ubuntu/+source/linux-gcp-5.3/5.3.0-1014.15~18.04.1
https://launchpad.net/ubuntu/+source/linux-gke-5.3/5.3.0-1014.15~18.04.1
https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-42.34~18.04.1
https://launchpad.net/ubuntu/+source/linux-raspi2-5.3/5.3.0-1019.21~18.04.1

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==========================================================================
Ubuntu Security Notice USN-4301-1
March 16, 2020

linux-aws-5.0, linux-gcp, linux-gke-5.0, linux-oracle-5.0 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
– linux-aws-5.0: Linux kernel for Amazon Web Services (AWS) systems
– linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
– linux-gke-5.0: Linux kernel for Google Container Engine (GKE) systems
– linux-oracle-5.0: Linux kernel for Oracle Cloud systems

Details:

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
linux-image-5.0.0-1013-oracle 5.0.0-1013.18
linux-image-5.0.0-1027-aws 5.0.0-1027.30
linux-image-5.0.0-1032-gke 5.0.0-1032.33
linux-image-5.0.0-1033-gcp 5.0.0-1033.34
linux-image-aws-edge 5.0.0.1027.41
linux-image-gcp 5.0.0.1033.37
linux-image-gke-5.0 5.0.0.1032.20
linux-image-oracle 5.0.0.1013.13

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4301-1
CVE-2019-19053, CVE-2019-19056, CVE-2019-19058, CVE-2019-19059,
CVE-2019-19066, CVE-2019-19068, CVE-2019-3016, CVE-2020-2732

Package Information:
https://launchpad.net/ubuntu/+source/linux-aws-5.0/5.0.0-1027.30
https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1033.34
https://launchpad.net/ubuntu/+source/linux-gke-5.0/5.0.0-1032.33
https://launchpad.net/ubuntu/+source/linux-oracle-5.0/5.0.0-1013.18

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—

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