what you don't know can hurt you

Ubuntu Security Notice USN-4591-1

Ubuntu Security Notice USN-4591-1
Posted Oct 20, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4591-1 - Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux kernel contained a type-confusion error. A physically proximate remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux kernel did not properly initialize memory in some situations. A physically proximate remote attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2020-12351, CVE-2020-12352
MD5 | 5d0eee3a0d51a48fdc43a1f3e9d24038

Ubuntu Security Notice USN-4591-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4591-1
October 19, 2020

linux, linux-hwe, linux-hwe-5.4, linux-oem, linux-raspi, linux-raspi-5.4,
linux-snapdragon vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-raspi: Linux kernel for Raspberry Pi (V8) systems
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
- linux-oem: Linux kernel for OEM systems
- linux-raspi-5.4: Linux kernel for Raspberry Pi (V8) systems
- linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors
- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux
kernel contained a type-confusion error. A physically proximate remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-12351)

Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux
kernel did not properly initialize memory in some situations. A physically
proximate remote attacker could use this to expose sensitive information
(kernel memory). (CVE-2020-12352)

Update instructions:

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

Ubuntu 20.04 LTS:
linux-image-5.4.0-1022-raspi 5.4.0-1022.25
linux-image-5.4.0-52-generic 5.4.0-52.57
linux-image-5.4.0-52-generic-lpae 5.4.0-52.57
linux-image-5.4.0-52-lowlatency 5.4.0-52.57
linux-image-generic 5.4.0.52.55
linux-image-generic-hwe-18.04 5.4.0.52.55
linux-image-generic-hwe-18.04-edge 5.4.0.52.55
linux-image-generic-hwe-20.04 5.4.0.52.55
linux-image-generic-lpae 5.4.0.52.55
linux-image-generic-lpae-hwe-18.04 5.4.0.52.55
linux-image-generic-lpae-hwe-18.04-edge 5.4.0.52.55
linux-image-generic-lpae-hwe-20.04 5.4.0.52.55
linux-image-lowlatency 5.4.0.52.55
linux-image-lowlatency-hwe-18.04 5.4.0.52.55
linux-image-lowlatency-hwe-18.04-edge 5.4.0.52.55
linux-image-lowlatency-hwe-20.04 5.4.0.52.55
linux-image-oem 5.4.0.52.55
linux-image-oem-osp1 5.4.0.52.55
linux-image-raspi 5.4.0.1022.57
linux-image-raspi-hwe-18.04 5.4.0.1022.57
linux-image-raspi-hwe-18.04-edge 5.4.0.1022.57
linux-image-raspi2 5.4.0.1022.57
linux-image-raspi2-hwe-18.04 5.4.0.1022.57
linux-image-raspi2-hwe-18.04-edge 5.4.0.1022.57
linux-image-virtual 5.4.0.52.55
linux-image-virtual-hwe-18.04 5.4.0.52.55
linux-image-virtual-hwe-18.04-edge 5.4.0.52.55
linux-image-virtual-hwe-20.04 5.4.0.52.55

Ubuntu 18.04 LTS:
linux-image-4.15.0-1090-snapdragon 4.15.0-1090.99
linux-image-4.15.0-1100-oem 4.15.0-1100.110
linux-image-4.15.0-122-generic 4.15.0-122.124
linux-image-4.15.0-122-generic-lpae 4.15.0-122.124
linux-image-4.15.0-122-lowlatency 4.15.0-122.124
linux-image-5.4.0-1022-raspi 5.4.0-1022.25~18.04.1
linux-image-5.4.0-52-generic 5.4.0-52.57~18.04.1
linux-image-5.4.0-52-generic-lpae 5.4.0-52.57~18.04.1
linux-image-5.4.0-52-lowlatency 5.4.0-52.57~18.04.1
linux-image-generic 4.15.0.122.109
linux-image-generic-hwe-18.04 5.4.0.52.57~18.04.46
linux-image-generic-lpae 4.15.0.122.109
linux-image-generic-lpae-hwe-18.04 5.4.0.52.57~18.04.46
linux-image-lowlatency 4.15.0.122.109
linux-image-lowlatency-hwe-18.04 5.4.0.52.57~18.04.46
linux-image-oem 4.15.0.1100.104
linux-image-powerpc-e500mc 4.15.0.122.109
linux-image-powerpc-smp 4.15.0.122.109
linux-image-powerpc64-emb 4.15.0.122.109
linux-image-powerpc64-smp 4.15.0.122.109
linux-image-raspi-hwe-18.04 5.4.0.1022.26
linux-image-snapdragon 4.15.0.1090.93
linux-image-snapdragon-hwe-18.04 5.4.0.52.57~18.04.46
linux-image-virtual 4.15.0.122.109
linux-image-virtual-hwe-18.04 5.4.0.52.57~18.04.46

Ubuntu 16.04 LTS:
linux-image-4.15.0-122-generic 4.15.0-122.124~16.04.1
linux-image-4.15.0-122-generic-lpae 4.15.0-122.124~16.04.1
linux-image-4.15.0-122-lowlatency 4.15.0-122.124~16.04.1
linux-image-generic-hwe-16.04 4.15.0.122.122
linux-image-generic-hwe-16.04-edge 4.15.0.122.122
linux-image-generic-lpae-hwe-16.04 4.15.0.122.122
linux-image-generic-lpae-hwe-16.04-edge 4.15.0.122.122
linux-image-lowlatency-hwe-16.04 4.15.0.122.122
linux-image-lowlatency-hwe-16.04-edge 4.15.0.122.122
linux-image-oem 4.15.0.122.122
linux-image-virtual-hwe-16.04 4.15.0.122.122
linux-image-virtual-hwe-16.04-edge 4.15.0.122.122

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/4591-1
CVE-2020-12351, CVE-2020-12352

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.4.0-52.57
https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1022.25
https://launchpad.net/ubuntu/+source/linux/4.15.0-122.124
https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-52.57~18.04.1
https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1100.110
https://launchpad.net/ubuntu/+source/linux-raspi-5.4/5.4.0-1022.25~18.04.1
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1090.99
https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-122.124~16.04.1

Login or Register to add favorites

File Archive:

October 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Oct 1st
    16 Files
  • 2
    Oct 2nd
    1 Files
  • 3
    Oct 3rd
    1 Files
  • 4
    Oct 4th
    24 Files
  • 5
    Oct 5th
    24 Files
  • 6
    Oct 6th
    11 Files
  • 7
    Oct 7th
    14 Files
  • 8
    Oct 8th
    19 Files
  • 9
    Oct 9th
    1 Files
  • 10
    Oct 10th
    0 Files
  • 11
    Oct 11th
    7 Files
  • 12
    Oct 12th
    15 Files
  • 13
    Oct 13th
    26 Files
  • 14
    Oct 14th
    10 Files
  • 15
    Oct 15th
    6 Files
  • 16
    Oct 16th
    2 Files
  • 17
    Oct 17th
    1 Files
  • 18
    Oct 18th
    14 Files
  • 19
    Oct 19th
    15 Files
  • 20
    Oct 20th
    20 Files
  • 21
    Oct 21st
    12 Files
  • 22
    Oct 22nd
    14 Files
  • 23
    Oct 23rd
    3 Files
  • 24
    Oct 24th
    1 Files
  • 25
    Oct 25th
    33 Files
  • 26
    Oct 26th
    27 Files
  • 27
    Oct 27th
    0 Files
  • 28
    Oct 28th
    0 Files
  • 29
    Oct 29th
    0 Files
  • 30
    Oct 30th
    0 Files
  • 31
    Oct 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close