==========================================================================
Ubuntu Security Notice USN-2683-1
July 23, 2015

linux-lts-vivid vulnerabilities
==========================================================================

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

– Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
– linux-lts-vivid: Linux hardware enablement kernel from Vivid

Details:

A flaw was discovered in the kvm (kernel virtual machine) subsystem’s
kvm_apic_has_events function. A unprivileged local user could exploit this
flaw to cause a denial of service (system crash). (CVE-2015-4692)

Daniel Borkmann reported a kernel crash in the Linux kernel’s BPF filter
JIT optimization. A local attacker could exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4700)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker could exploit this flaw to cause a denial of
service using a flood of UDP packets with invalid checksums.
(CVE-2015-5364)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker can cause a denial of service against
applications that use epoll by injecting a single packet with an invalid
checksum. (CVE-2015-5366)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-3.19.0-23-generic 3.19.0-23.24~14.04.1
linux-image-3.19.0-23-generic-lpae 3.19.0-23.24~14.04.1
linux-image-3.19.0-23-lowlatency 3.19.0-23.24~14.04.1
linux-image-3.19.0-23-powerpc-e500mc 3.19.0-23.24~14.04.1
linux-image-3.19.0-23-powerpc-smp 3.19.0-23.24~14.04.1
linux-image-3.19.0-23-powerpc64-emb 3.19.0-23.24~14.04.1
linux-image-3.19.0-23-powerpc64-smp 3.19.0-23.24~14.04.1

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:
http://www.ubuntu.com/usn/usn-2683-1
CVE-2015-4692, CVE-2015-4700, CVE-2015-5364, CVE-2015-5366

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-vivid/3.19.0-23.24~14.04.1

—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1
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=0S7d
—–END PGP SIGNATURE—–
—
ubuntu-security-announce mailing list
ubuntu-security-announce@lists.ubuntu.com
Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce

==========================================================================
Ubuntu Security Notice USN-2684-1
July 23, 2015

linux vulnerabilities
==========================================================================

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

– Ubuntu 15.04

Summary:

Several security issues were fixed in the kernel.

Software Description:
– linux: Linux kernel

Details:

A flaw was discovered in the kvm (kernel virtual machine) subsystem’s
kvm_apic_has_events function. A unprivileged local user could exploit this
flaw to cause a denial of service (system crash). (CVE-2015-4692)

Daniel Borkmann reported a kernel crash in the Linux kernel’s BPF filter
JIT optimization. A local attacker could exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4700)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker could exploit this flaw to cause a denial of
service using a flood of UDP packets with invalid checksums.
(CVE-2015-5364)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker can cause a denial of service against
applications that use epoll by injecting a single packet with an invalid
checksum. (CVE-2015-5366)

Update instructions:

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

Ubuntu 15.04:
linux-image-3.19.0-23-generic 3.19.0-23.24
linux-image-3.19.0-23-generic-lpae 3.19.0-23.24
linux-image-3.19.0-23-lowlatency 3.19.0-23.24
linux-image-3.19.0-23-powerpc-e500mc 3.19.0-23.24
linux-image-3.19.0-23-powerpc-smp 3.19.0-23.24
linux-image-3.19.0-23-powerpc64-emb 3.19.0-23.24
linux-image-3.19.0-23-powerpc64-smp 3.19.0-23.24

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:
http://www.ubuntu.com/usn/usn-2684-1
CVE-2015-4692, CVE-2015-4700, CVE-2015-5364, CVE-2015-5366

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.19.0-23.24

—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1
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=QQK+
—–END PGP SIGNATURE—–
—