[USN-3674-2] Linux kernel (Trusty HWE) vulnerabilities


–===============2444314387412707357==
Content-Type: multipart/signed; micalg=pgp-sha512;
protocol=”application/pgp-signature”; boundary=”Km1U/tdNT/EmXiR1″
Content-Disposition: inline

–Km1U/tdNT/EmXiR1
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

==========================================================================
Ubuntu Security Notice USN-3674-2
June 11, 2018

linux-lts-trusty vulnerabilities
==========================================================================

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

– Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

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

Details:

USN-3674-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu
12.04 ESM.

It was discovered that the netfilter subsystem of the Linux kernel did not
properly validate ebtables offsets. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2018-1068)

It was discovered that a NULL pointer dereference existed in the RDS
(Reliable Datagram Sockets) protocol implementation in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2018-7492)

Eyal Itkin discovered that the USB displaylink video adapter driver in the
Linux kernel did not properly validate mmap offsets sent from userspace. A
local attacker could use this to expose sensitive information (kernel
memory) or possibly execute arbitrary code. (CVE-2018-8781)

Xingyuan Lin discovered that a out-of-bounds read existed in the USB Video
Class (UVC) driver of the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2017-0627)

Update instructions:

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

Ubuntu 12.04 ESM:
linux-image-3.13.0-151-generic 3.13.0-151.201~precise1
linux-image-3.13.0-151-generic-lpae 3.13.0-151.201~precise1
linux-image-generic-lpae-lts-trusty 3.13.0.151.142
linux-image-generic-lts-trusty 3.13.0.151.142

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/usn/usn-3674-2
https://usn.ubuntu.com/usn/usn-3674-1
CVE-2017-0627, CVE-2018-1068, CVE-2018-7492, CVE-2018-8781

–Km1U/tdNT/EmXiR1
Content-Type: application/pgp-signature; name=”signature.asc”

—–BEGIN PGP SIGNATURE—–
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=BYO5
—–END PGP SIGNATURE—–

–Km1U/tdNT/EmXiR1–

–===============2444314387412707357==
Content-Type: text/plain; charset=”utf-8″
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline

LS0gCnVidW50dS1zZWN1cml0eS1hbm5vdW5jZSBtYWlsaW5nIGxpc3QKdWJ1bnR1LXNlY3VyaXR5
LWFubm91bmNlQGxpc3RzLnVidW50dS5jb20KTW9kaWZ5IHNldHRpbmdzIG9yIHVuc3Vic2NyaWJl
IGF0OiBodHRwczovL2xpc3RzLnVidW50dS5jb20vbWFpbG1hbi9saXN0aW5mby91YnVudHUtc2Vj
dXJpdHktYW5ub3VuY2UK

–===============2444314387412707357==–