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USN-4094-1: Linux kernel vulnerabilities

13 August 2019

Several security issues were fixed in the Linux kernel.

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Releases

Packages

Details

It was discovered that the alarmtimer implementation in the Linux kernel
contained an integer overflow vulnerability. A local attacker could use
this to cause a denial of service. (CVE-2018-13053)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly track inode validations. An attacker could use this
to construct a malicious XFS image that, when mounted, could cause a denial
of service (system crash). (CVE-2018-13093)

Wen Xu discovered that the f2fs file system implementation in the
Linux kernel did not properly validate metadata. An attacker could
use this to construct a malicious f2fs image that, when mounted,
could cause a denial of service (system crash). (CVE-2018-13097,
CVE-2018-13099, CVE-2018-13100, CVE-2018-14614, CVE-2018-14616,
CVE-2018-13096, CVE-2018-13098, CVE-2018-14615)

Wen Xu and Po-Ning Tseng discovered that btrfs file system
implementation in the Linux kernel did not properly validate
metadata. An attacker could use this to construct a malicious
btrfs image that, when mounted, could cause a denial of service
(system crash). (CVE-2018-14610, CVE-2018-14611, CVE-2018-14612,
CVE-2018-14613, CVE-2018-14609)

Wen Xu discovered that the HFS+ filesystem implementation in the Linux
kernel did not properly handle malformed catalog data in some situations.
An attacker could use this to construct a malicious HFS+ image that, when
mounted, could cause a denial of service (system crash). (CVE-2018-14617)

Vasily Averin and Pavel Tikhomirov discovered that the cleancache subsystem
of the Linux kernel did not properly initialize new files in some
situations. A local attacker could use this to expose sensitive
information. (CVE-2018-16862)

Hui Peng and Mathias Payer discovered that the USB subsystem in the Linux
kernel did not properly handle size checks when handling an extra USB
descriptor. A physically proximate attacker could use this to cause a
denial of service (system crash). (CVE-2018-20169)

It was discovered that a use-after-free error existed in the block layer
subsystem of the Linux kernel when certain failure conditions occurred. A
local attacker could possibly use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2018-20856)

Eli Biham and Lior Neumann discovered that the Bluetooth implementation in
the Linux kernel did not properly validate elliptic curve parameters during
Diffie-Hellman key exchange in some situations. An attacker could use this
to expose sensitive information. (CVE-2018-5383)

It was discovered that a heap buffer overflow existed in the Marvell
Wireless LAN device driver for the Linux kernel. An attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2019-10126)

Andrei Vlad Lutas and Dan Lutas discovered that some x86 processors
incorrectly handle SWAPGS instructions during speculative execution. A
local attacker could use this to expose sensitive information (kernel
memory). (CVE-2019-1125)

It was discovered that the PowerPC dlpar implementation in the Linux kernel
did not properly check for allocation errors in some situations. A local
attacker could possibly use this to cause a denial of service (system
crash). (CVE-2019-12614)

It was discovered that a NULL pointer dereference vulnerabilty existed in
the Near-field communication (NFC) implementation in the Linux kernel. An
attacker could use this to cause a denial of service (system crash).
(CVE-2019-12818)

It was discovered that the MDIO bus devices subsystem in the Linux kernel
improperly dropped a device reference in an error condition, leading to a
use-after-free. An attacker could use this to cause a denial of service
(system crash). (CVE-2019-12819)

It was discovered that a NULL pointer dereference vulnerability existed in
the Near-field communication (NFC) implementation in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2019-12984)

Jann Horn discovered a use-after-free vulnerability in the Linux kernel
when accessing LDT entries in some situations. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2019-13233)

Jann Horn discovered that the ptrace implementation in the Linux kernel did
not properly record credentials in some situations. A local attacker could
use this to cause a denial of service (system crash) or possibly gain
administrative privileges. (CVE-2019-13272)

It was discovered that the Empia EM28xx DVB USB device driver
implementation in the Linux kernel contained a use-after-free vulnerability
when disconnecting the device. An attacker could use this to cause a denial
of service (system crash). (CVE-2019-2024)

It was discovered that the USB video device class implementation in the
Linux kernel did not properly validate control bits, resulting in an out of
bounds buffer read. A local attacker could use this to possibly expose
sensitive information (kernel memory). (CVE-2019-2101)

It was discovered that the Marvell Wireless LAN device driver in the Linux
kernel did not properly validate the BSS descriptor. A local attacker could
possibly use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2019-3846)

It was discovered that the Appletalk IP encapsulation driver in the Linux
kernel did not properly prevent kernel addresses from being copied to user
space. A local attacker with the CAP_NET_ADMIN capability could use this to
expose sensitive information. (CVE-2018-20511)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 18.04
Ubuntu 16.04

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

Related notices

  • USN-3821-1: linux-raspi2, linux-image-4.4.0-139-generic-lpae, linux-aws, linux-image-4.4.0-1037-kvm, linux-image-4.4.0-139-powerpc64-smp, linux-image-4.4.0-139-lowlatency, linux-image-4.4.0-139-powerpc64-emb, linux-kvm, linux-image-4.4.0-1072-aws, linux-image-4.4.0-139-powerpc-e500mc, linux-image-4.4.0-1104-snapdragon, linux-image-extra-4.4.0-139-generic, linux-image-4.4.0-1100-raspi2, linux-image-4.4.0-139-generic, linux-snapdragon, linux-image-4.4.0-139-powerpc-smp, linux
  • USN-4118-1: linux-image-aws-hwe, linux-aws, linux-aws-hwe, linux-image-aws, linux-image-4.15.0-1047-aws
  • USN-3821-2: linux-lts-xenial, linux-image-4.4.0-139-generic-lpae, linux-aws, linux-image-4.4.0-139-powerpc64-smp, linux-image-4.4.0-139-lowlatency, linux-image-4.4.0-139-powerpc64-emb, linux-image-4.4.0-1034-aws, linux-image-4.4.0-139-powerpc-e500mc, linux-image-extra-4.4.0-139-generic, linux-image-4.4.0-139-generic, linux-image-4.4.0-139-powerpc-smp
  • USN-4708-1: linux-image-lowlatency-lts-xenial, linux-image-powerpc-smp-lts-vivid, linux-image-powerpc-e500mc, linux-image-generic-lpae-lts-utopic, linux-image-4.4.0-201-powerpc64-smp, linux-image-virtual-lts-xenial, linux-image-4.4.0-201-powerpc-e500mc, linux-image-powerpc64-smp-lts-wily, linux-image-generic-lts-vivid, linux-image-lowlatency, linux-image-4.4.0-201-generic, linux-image-virtual-lts-wily, linux-image-powerpc64-smp-lts-xenial, linux-image-lowlatency-lts-vivid, linux-image-lowlatency-lts-utopic, linux-image-virtual-lts-utopic, linux-image-4.4.0-201-powerpc-smp, linux-image-4.4.0-201-lowlatency, linux-image-powerpc64-emb, linux-image-4.4.0-201-powerpc64-emb, linux-image-powerpc64-emb-lts-utopic, linux-image-virtual-lts-vivid, linux-lts-xenial, linux-image-powerpc-smp-lts-utopic, linux-image-powerpc-e500mc-lts-vivid, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc-smp-lts-wily, linux-image-powerpc64-smp-lts-utopic, linux-image-generic-lts-wily, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-e500mc-lts-wily, linux-image-powerpc64-emb-lts-xenial, linux-image-powerpc-e500mc-lts-utopic, linux-image-powerpc64-smp, linux-image-virtual, linux-image-generic-lts-utopic, linux-image-generic-lpae-lts-wily, linux-image-generic-lpae-lts-vivid, linux-image-powerpc-e500mc-lts-xenial, linux-image-4.4.0-201-generic-lpae, linux-image-lowlatency-lts-wily, linux-image-powerpc64-smp-lts-vivid, linux-image-generic-lts-xenial, linux-image-generic-lpae, linux-image-powerpc-smp, linux-image-powerpc64-emb-lts-vivid, linux-image-generic, linux, linux-image-powerpc64-emb-lts-wily
  • USN-4709-1: linux-raspi2, linux-image-4.4.0-1145-raspi2, linux-aws, linux-image-raspi2, linux-image-4.4.0-1149-snapdragon, linux-image-4.4.0-1121-aws, linux-kvm, linux-image-4.4.0-1085-aws, linux-image-kvm, linux-image-4.4.0-1087-kvm, linux-image-snapdragon, linux-image-aws, linux-snapdragon
  • USN-3932-1: linux-raspi2, linux-image-lowlatency-lts-xenial, linux-image-powerpc-smp-lts-vivid, linux-image-powerpc-e500mc, linux-image-4.4.0-145-powerpc64-emb, linux-image-generic-lpae-lts-utopic, linux-image-kvm, linux-image-4.4.0-145-powerpc-e500mc, linux-image-virtual-lts-xenial, linux-image-4.4.0-1110-snapdragon, linux-image-snapdragon, linux-image-powerpc64-smp-lts-wily, linux-image-generic-lts-vivid, linux-image-lowlatency, linux-aws, linux-image-4.4.0-145-generic, linux-image-powerpc64-smp-lts-xenial, linux-image-lowlatency-lts-vivid, linux-image-virtual-lts-wily, linux-image-lowlatency-lts-utopic, linux-image-virtual-lts-utopic, linux-image-powerpc64-emb, linux-image-aws, linux-kvm, linux-image-powerpc64-emb-lts-utopic, linux-image-virtual-lts-vivid, linux-image-4.4.0-145-generic-lpae, linux-image-powerpc-smp-lts-utopic, linux-image-4.4.0-145-powerpc64-smp, linux-image-powerpc-e500mc-lts-vivid, linux-image-4.4.0-1079-aws, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc-smp-lts-wily, linux-image-powerpc64-smp-lts-utopic, linux-image-generic-lts-wily, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-e500mc-lts-wily, linux-image-powerpc64-emb-lts-xenial, linux-image-powerpc-e500mc-lts-utopic, linux-image-powerpc64-smp, linux-image-virtual, linux-image-generic-lts-utopic, linux-image-generic-lpae-lts-wily, linux-image-generic-lpae-lts-vivid, linux-image-powerpc-e500mc-lts-xenial, linux-image-4.4.0-145-powerpc-smp, linux-image-4.4.0-145-lowlatency, linux-image-4.4.0-1043-kvm, linux-image-lowlatency-lts-wily, linux-image-powerpc64-smp-lts-vivid, linux-image-generic-lts-xenial, linux-image-raspi2, linux-image-generic-lpae, linux-image-powerpc-smp, linux-image-powerpc64-emb-lts-vivid, linux-image-4.4.0-1106-raspi2, linux-image-generic, linux-snapdragon, linux, linux-image-powerpc64-emb-lts-wily
  • USN-3932-2: linux-image-lowlatency-lts-xenial, linux-image-4.4.0-144-powerpc64-emb, linux-image-virtual-lts-xenial, linux-aws, linux-image-powerpc64-smp-lts-xenial, linux-image-4.4.0-144-generic-lpae, linux-image-aws, linux-image-4.4.0-144-generic, linux-image-4.4.0-144-powerpc64-smp, linux-lts-xenial, linux-image-4.4.0-1040-aws, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc64-emb-lts-xenial, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-e500mc-lts-xenial, linux-image-4.4.0-144-powerpc-smp, linux-image-generic-lts-xenial, linux-image-4.4.0-144-powerpc-e500mc, linux-image-4.4.0-144-lowlatency
  • USN-3879-1: linux-raspi2, linux-image-lowlatency-lts-xenial, linux-image-powerpc-smp-lts-vivid, linux-image-powerpc-e500mc, linux-image-generic-lpae-lts-utopic, linux-image-kvm, linux-image-4.4.0-142-lowlatency, linux-image-virtual-lts-xenial, linux-image-snapdragon, linux-image-4.4.0-142-generic-lpae, linux-image-powerpc64-smp-lts-wily, linux-image-generic-lts-vivid, linux-image-lowlatency, linux-aws, linux-image-4.4.0-142-powerpc-e500mc, linux-image-powerpc64-smp-lts-xenial, linux-image-4.4.0-142-powerpc-smp, linux-image-lowlatency-lts-vivid, linux-image-virtual-lts-wily, linux-image-lowlatency-lts-utopic, linux-image-virtual-lts-utopic, linux-image-powerpc64-emb, linux-image-4.4.0-1040-kvm, linux-image-aws, linux-kvm, linux-image-powerpc64-emb-lts-utopic, linux-image-virtual-lts-vivid, linux-image-4.4.0-1107-snapdragon, linux-image-powerpc-smp-lts-utopic, linux-image-powerpc-e500mc-lts-vivid, linux-image-4.4.0-1103-raspi2, linux-image-4.4.0-142-generic, linux-image-powerpc-smp-lts-wily, linux-image-powerpc-smp-lts-xenial, linux-image-generic-lts-wily, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-e500mc-lts-wily, linux-image-powerpc64-emb-lts-xenial, linux-image-powerpc-e500mc-lts-utopic, linux-image-powerpc64-smp, linux-image-powerpc64-smp-lts-utopic, linux-image-generic-lts-utopic, linux-image-generic-lpae-lts-wily, linux-image-generic-lpae-lts-vivid, linux-image-virtual, linux-image-powerpc-e500mc-lts-xenial, linux-image-lowlatency-lts-wily, linux-image-powerpc64-smp-lts-vivid, linux-image-generic-lts-xenial, linux-image-4.4.0-1075-aws, linux-image-generic-lpae, linux-image-powerpc-smp, linux-image-powerpc64-emb-lts-vivid, linux-image-raspi2, linux-image-4.4.0-142-powerpc64-emb, linux-image-4.4.0-142-powerpc64-smp, linux-image-generic, linux-snapdragon, linux, linux-image-powerpc64-emb-lts-wily
  • USN-3879-2: linux-image-lowlatency-lts-xenial, linux-image-4.4.0-142-lowlatency, linux-image-virtual-lts-xenial, linux-image-4.4.0-142-generic-lpae, linux-aws, linux-image-4.4.0-142-powerpc-e500mc, linux-image-powerpc64-smp-lts-xenial, linux-image-4.4.0-142-powerpc-smp, linux-image-aws, linux-lts-xenial, linux-image-powerpc-smp-lts-xenial, linux-image-4.4.0-142-generic, linux-image-powerpc64-emb-lts-xenial, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-e500mc-lts-xenial, linux-image-generic-lts-xenial, linux-image-4.4.0-142-powerpc64-emb, linux-image-4.4.0-1038-aws, linux-image-4.4.0-142-powerpc64-smp
  • USN-4116-1: linux-raspi2, linux-image-4.4.0-1120-raspi2, linux-image-lowlatency-lts-xenial, linux-image-powerpc-smp-lts-vivid, linux-image-powerpc-e500mc, linux-image-generic-lpae-lts-utopic, linux-image-kvm, linux-image-virtual-lts-xenial, linux-image-4.4.0-1124-snapdragon, linux-image-snapdragon, linux-image-4.4.0-1092-aws, linux-image-4.4.0-161-generic-lpae, linux-image-powerpc64-smp-lts-wily, linux-image-generic-lts-vivid, linux-image-lowlatency, linux-aws, linux-image-4.4.0-161-powerpc64-emb, linux-image-powerpc64-smp-lts-xenial, linux-image-lowlatency-lts-vivid, linux-image-virtual-lts-wily, linux-image-4.4.0-161-lowlatency, linux-image-lowlatency-lts-utopic, linux-image-virtual-lts-utopic, linux-image-powerpc64-emb, linux-image-aws, linux-image-4.4.0-161-generic, linux-kvm, linux-image-powerpc64-emb-lts-utopic, linux-image-virtual-lts-vivid, linux-image-4.4.0-161-powerpc-smp, linux-image-powerpc-smp-lts-utopic, linux-image-powerpc-e500mc-lts-vivid, linux-image-powerpc-smp-lts-xenial, linux-image-4.4.0-161-powerpc-e500mc, linux-image-powerpc-smp-lts-wily, linux-image-generic-lts-wily, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-e500mc-lts-wily, linux-image-powerpc64-emb-lts-xenial, linux-image-powerpc-e500mc-lts-utopic, linux-image-powerpc64-smp, linux-image-powerpc64-smp-lts-utopic, linux-image-generic-lts-utopic, linux-image-generic-lpae-lts-wily, linux-image-generic-lpae-lts-vivid, linux-image-virtual, linux-image-powerpc-e500mc-lts-xenial, linux-image-lowlatency-lts-wily, linux-image-powerpc64-smp-lts-vivid, linux-image-generic-lts-xenial, linux-image-raspi2, linux-image-generic-lpae, linux-image-powerpc-smp, linux-image-powerpc64-emb-lts-vivid, linux-image-4.4.0-1056-kvm, linux-image-generic, linux-image-4.4.0-161-powerpc64-smp, linux-snapdragon, linux, linux-image-powerpc64-emb-lts-wily
  • USN-4095-1: linux-raspi2, linux-image-lowlatency-lts-xenial, linux-image-4.4.0-1090-aws, linux-image-4.4.0-159-powerpc64-smp, linux-image-powerpc-e500mc, linux-image-powerpc-smp-lts-vivid, linux-image-4.4.0-159-powerpc64-emb, linux-image-generic-lpae-lts-utopic, linux-image-kvm, linux-image-virtual-lts-xenial, linux-image-snapdragon, linux-image-4.4.0-159-powerpc-e500mc, linux-image-powerpc64-smp-lts-wily, linux-image-generic-lts-vivid, linux-image-lowlatency, linux-aws, linux-image-virtual-lts-wily, linux-image-powerpc64-smp-lts-xenial, linux-image-lowlatency-lts-vivid, linux-image-lowlatency-lts-utopic, linux-image-virtual-lts-utopic, linux-image-powerpc64-emb, linux-image-aws, linux-kvm, linux-image-powerpc64-emb-lts-utopic, linux-image-virtual-lts-vivid, linux-image-4.4.0-159-powerpc-smp, linux-image-4.4.0-1054-kvm, linux-image-4.4.0-159-generic-lpae, linux-image-4.4.0-159-lowlatency, linux-image-powerpc-smp-lts-utopic, linux-image-powerpc-e500mc-lts-vivid, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc-smp-lts-wily, linux-image-powerpc64-smp-lts-utopic, linux-image-generic-lts-wily, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-e500mc-lts-wily, linux-image-4.4.0-1122-snapdragon, linux-image-4.4.0-1118-raspi2, linux-image-powerpc-e500mc-lts-utopic, linux-image-powerpc64-emb-lts-xenial, linux-image-generic-lts-utopic, linux-image-generic-lpae-lts-wily, linux-image-generic-lpae-lts-vivid, linux-image-powerpc64-smp, linux-image-virtual, linux-image-powerpc-e500mc-lts-xenial, linux-image-lowlatency-lts-wily, linux-image-powerpc64-smp-lts-vivid, linux-image-generic-lts-xenial, linux-image-4.4.0-159-generic, linux-image-generic-lpae, linux-image-powerpc-smp, linux-image-powerpc64-emb-lts-vivid, linux-image-raspi2, linux-image-generic, linux-snapdragon, linux, linux-image-powerpc64-emb-lts-wily
  • USN-4095-2: linux-image-lowlatency-lts-xenial, linux-image-4.4.0-159-powerpc64-smp, linux-image-4.4.0-159-powerpc64-emb, linux-image-virtual-lts-xenial, linux-image-4.4.0-1050-aws, linux-image-4.4.0-159-powerpc-e500mc, linux-aws, linux-image-powerpc64-smp-lts-xenial, linux-image-aws, linux-image-4.4.0-159-powerpc-smp, linux-lts-xenial, linux-image-4.4.0-159-generic-lpae, linux-image-4.4.0-159-lowlatency, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc64-emb-lts-xenial, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-e500mc-lts-xenial, linux-image-generic-lts-xenial, linux-image-4.4.0-159-generic
  • USN-4351-1: linux-firmware, scsi-firmware, nic-firmware
  • USN-4117-1: linux-image-aws, linux-image-5.0.0-1014-aws, linux-aws
  • USN-4093-1: linux-raspi2, linux-image-kvm, linux-image-gke, linux-gcp, linux-image-snapdragon-hwe-18.04, linux-image-5.0.0-1014-raspi2, linux-image-snapdragon, linux-image-lowlatency, linux-image-lowlatency-hwe-18.04, linux-image-5.0.0-25-generic, linux-image-5.0.0-1013-gcp, linux-image-virtual-hwe-18.04, linux-image-5.0.0-25-generic-lpae, linux-image-azure, linux-image-generic-hwe-18.04, linux-image-5.0.0-25-lowlatency, linux-kvm, linux-image-virtual, linux-image-generic-lpae-hwe-18.04, linux-azure, linux-image-gcp, linux-image-raspi2, linux-image-generic-lpae, linux-image-generic, linux-image-5.0.0-1013-kvm, linux-image-5.0.0-1014-azure, linux-hwe, linux-snapdragon, linux, linux-image-5.0.0-1018-snapdragon
  • USN-4096-1: linux-image-aws-hwe, linux-aws, linux-aws-hwe, linux-image-4.15.0-1045-aws, linux-image-aws, linux-image-5.0.0-1012-aws

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