USN-2228-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-2228-1

27th May, 2014

linux vulnerabilities

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

• Ubuntu 13.10

Summary

Several security issues were fixed in the kernel.

Software description

• linux - Linux kernel

Details

Matthew Daley reported an information leak in the floppy disk driver of the

Linux kernel. An unprivileged local user could exploit this flaw to obtain

potentially sensitive information from kernel memory. (CVE-2014-1738)

Matthew Daley reported a flaw in the handling of ioctl commands by the

floppy disk driver in the Linux kernel. An unprivileged local user could

exploit this flaw to gain administrative privileges if the floppy disk

module is loaded. (CVE-2014-1737)

A flaw was discovered in the vhost-net subsystem of the Linux kernel. Guest

OS users could exploit this flaw to cause a denial of service (host OS

crash). (CVE-2014-0055)

A flaw was discovered in the handling of network packets when mergeable

buffers are disabled for virtual machines in the Linux kernel. Guest OS

users may exploit this flaw to cause a denial of service (host OS crash) or

possibly gain privilege on the host OS. (CVE-2014-0077)

Nikolay Aleksandrov discovered a race condition in Linux kernel's IPv4

fragment handling code. Remote attackers could exploit this flaw to cause a

denial of service (system crash) or possibly have other unspecified impact.

(CVE-2014-0100)

A flaw was discovered in the Linux kernel's handling of the SCTP handshake.

A remote attacker could exploit this flaw to cause a denial of service

(system crash). (CVE-2014-0101)

A flaw was discovered in the handling of routing information in Linux

kernel's IPv6 stack. A remote attacker could exploit this flaw to cause a

denial of service (memory consumption) via a flood of ICMPv6 router

advertisement packets. (CVE-2014-2309)

An error was discovered in the Linux kernel's DCCP protocol support. A

remote attacked could exploit this flaw to cause a denial of service

(system crash) or possibly execute arbitrary code. (CVE-2014-2523)

Max Sydorenko discovered a race condition in the Atheros 9k wireless driver

in the Linux kernel. This race could be exploited by remote attackers to

cause a denial of service (system crash). (CVE-2014-2672)

Adhemerval Zanella Neto discovered a flaw the in the Transactional Memory

(TM) implementation for powerpc based machine. An unprivileged local user

could exploit this flaw to cause a denial of service (system crash).

(CVE-2014-2673)

An error was discovered in the Reliable Datagram Sockets (RDS) protocol

stack in the Linux kernel. A local user could exploit this flaw to cause a

denial of service (system crash) or possibly have unspecified other impact.

(CVE-2014-2678)

Yaara Rozenblum discovered a race condition in the Linux kernel's Generic

IEEE 802.11 Networking Stack (mac80211). Remote attackers could exploit

this flaw to cause a denial of service (system crash). (CVE-2014-2706)

A flaw was discovered in the Linux kernel's ping sockets. An unprivileged

local user could exploit this flaw to cause a denial of service (system

crash) or possibly gain privileges via a crafted application.

(CVE-2014-2851)

Update instructions

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

Ubuntu 13.10:

linux-image-3.11.0-22-generic 3.11.0-22.38

linux-image-3.11.0-22-generic-lpae 3.11.0-22.38

To update your system, please follow these instructions: http://bit.ly/1aJDvTw.

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. If

you use linux-restricted-modules, you have to update that package as

well to get modules which work with the new kernel version. Unless you

manually uninstalled the standard kernel metapackages (e.g. linux-generic,

linux-server, linux-powerpc), a standard system upgrade will automatically

perform this as well.

References

CVE-2014-0055, CVE-2014-0077, CVE-2014-0100, CVE-2014-0101, CVE-2014-1737, CVE-2014-1738, CVE-2014-2309, CVE-2014-2523, CVE-2014-2672, CVE-2014-2673, CVE-2014-2678, CVE-2014-2706, CVE-2014-2851

via Ubuntu Security Notices http://bit.ly/Rwa436