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Ubuntu Security Notice USN-4580-1

Ubuntu Security Notice USN-4580-1
Posted Oct 14, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4580-1 - Hador Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2020-16119
SHA-256 | 5ddd6088eda65a3e578f743697006787872aae3821943614561e1f904791c25a

Ubuntu Security Notice USN-4580-1

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4580-1
October 14, 2020

linux, linux-lts-trusty vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

The system could be made to crash or possibly run programs as an
administrator.

Software Description:
- linux: Linux kernel
- linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM

Details:

Hador Manor discovered that the DCCP protocol implementation in the Linux
kernel improperly handled socket reuse, leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 14.04 ESM:
linux-image-3.13.0-182-generic 3.13.0-182.233
linux-image-3.13.0-182-generic-lpae 3.13.0-182.233
linux-image-3.13.0-182-lowlatency 3.13.0-182.233
linux-image-generic 3.13.0.182.191
linux-image-generic-lpae 3.13.0.182.191
linux-image-generic-pae 3.13.0.182.191
linux-image-highbank 3.13.0.182.191
linux-image-lowlatency 3.13.0.182.191
linux-image-lowlatency-pae 3.13.0.182.191
linux-image-omap 3.13.0.182.191
linux-image-server 3.13.0.182.191
linux-image-virtual 3.13.0.182.191

Ubuntu 12.04 ESM:
linux-image-3.13.0-182-generic 3.13.0-182.233~12.04.1
linux-image-3.13.0-182-generic-lpae 3.13.0-182.233~12.04.1
linux-image-3.13.0-182-lowlatency 3.13.0-182.233~12.04.1
linux-image-3.2.0-149-generic 3.2.0-149.196
linux-image-3.2.0-149-generic-pae 3.2.0-149.196
linux-image-3.2.0-149-highbank 3.2.0-149.196
linux-image-3.2.0-149-omap 3.2.0-149.196
linux-image-3.2.0-149-virtual 3.2.0-149.196
linux-image-generic 3.2.0.149.163
linux-image-generic-lpae-lts-trusty 3.13.0.182.168
linux-image-generic-lts-trusty 3.13.0.182.168
linux-image-generic-pae 3.2.0.149.163
linux-image-highbank 3.2.0.149.163
linux-image-server 3.2.0.149.163
linux-image-virtual 3.2.0.149.163

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/4580-1
CVE-2020-16119
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