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Kernel Live Patch Security Notice LSN-0054-1

Kernel Live Patch Security Notice LSN-0054-1
Posted Aug 28, 2019
Authored by Benjamin M. Romer

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). 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. Various other vulnerabilities have also been addressed.

tags | advisory, denial of service, arbitrary, kernel, local, vulnerability
systems | linux
advisories | CVE-2018-1129, CVE-2019-10126, CVE-2019-12614, CVE-2019-12818, CVE-2019-12819, CVE-2019-12984, CVE-2019-13272, CVE-2019-2101, CVE-2019-3846
MD5 | 1de971967f43f22fa4ee2b9590b93d64

Kernel Live Patch Security Notice LSN-0054-1

Change Mirror Download
==========================================================================
Kernel Live Patch Security Notice 0054-1
August 28, 2019

linux vulnerability
==========================================================================

A security issue affects these releases of Ubuntu:

| Series | Base kernel | Arch | flavors |
|------------------+--------------+----------+------------------|
| Ubuntu 18.04 LTS | 4.15.0 | amd64 | generic |
| Ubuntu 18.04 LTS | 4.15.0 | amd64 | lowlatency |
| Ubuntu 16.04 LTS | 4.4.0 | amd64 | generic |
| Ubuntu 16.04 LTS | 4.4.0 | amd64 | lowlatency |
| Ubuntu 16.04 LTS | 4.15.0 | amd64 | generic |
| Ubuntu 16.04 LTS | 4.15.0 | amd64 | lowlatency |

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

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 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)

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 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)

Update instructions:

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

| Kernel | Version | flavors |
|--------------------------+----------+--------------------------|
| 4.4.0-148.174 | 54.1 | lowlatency, generic |
| 4.4.0-150.176 | 54.1 | generic, lowlatency |
| 4.4.0-151.178 | 54.1 | lowlatency, generic |
| 4.4.0-154.181 | 54.1 | lowlatency, generic |
| 4.4.0-157.185 | 54.1 | lowlatency, generic |
| 4.15.0-50.54 | 54.2 | generic, lowlatency |
| 4.15.0-50.54~16.04.1 | 54.2 | generic, lowlatency |
| 4.15.0-51.55 | 54.2 | generic, lowlatency |
| 4.15.0-51.55~16.04.1 | 54.2 | generic, lowlatency |
| 4.15.0-52.56 | 54.2 | lowlatency, generic |
| 4.15.0-52.56~16.04.1 | 54.2 | generic, lowlatency |
| 4.15.0-54.58 | 54.2 | generic, lowlatency |
| 4.15.0-54.58~16.04.1 | 54.2 | generic, lowlatency |
| 4.15.0-55.60 | 54.2 | generic, lowlatency |

References:
CVE-2018-1129, CVE-2019-2101, CVE-2019-3846, CVE-2019-10126,
CVE-2019-12614, CVE-2019-12818, CVE-2019-12819, CVE-2019-12984,
CVE-2019-13272


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