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SUSE-SU-2017:2142-1

Опубликовано: 11 авг. 2017
Источник: suse-cvrf

Описание

Security update for the Linux Kernel

The SUSE Linux Enterprise 12 kernel was updated to 3.12.61 to the following security updates:

  • CVE-2017-1000111: fix race condition in net-packet code that could be exploited to cause out-of-bounds memory access (bsc#1052365).
  • CVE-2017-1000112: fix race condition in net-packet code that could have been exploited by unprivileged users to gain root access. (bsc#1052311).

Список пакетов

SUSE Linux Enterprise Module for Public Cloud 12
kernel-ec2-3.12.61-52.86.1
kernel-ec2-devel-3.12.61-52.86.1
kernel-ec2-extra-3.12.61-52.86.1
SUSE Linux Enterprise Server 12-LTSS
kernel-default-3.12.61-52.86.1
kernel-default-base-3.12.61-52.86.1
kernel-default-devel-3.12.61-52.86.1
kernel-default-man-3.12.61-52.86.1
kernel-devel-3.12.61-52.86.1
kernel-macros-3.12.61-52.86.1
kernel-source-3.12.61-52.86.1
kernel-syms-3.12.61-52.86.1
kernel-xen-3.12.61-52.86.1
kernel-xen-base-3.12.61-52.86.1
kernel-xen-devel-3.12.61-52.86.1
kgraft-patch-3_12_61-52_86-default-1-2.1
kgraft-patch-3_12_61-52_86-xen-1-2.1
SUSE Linux Enterprise Server for SAP Applications 12
kernel-default-3.12.61-52.86.1
kernel-default-base-3.12.61-52.86.1
kernel-default-devel-3.12.61-52.86.1
kernel-devel-3.12.61-52.86.1
kernel-macros-3.12.61-52.86.1
kernel-source-3.12.61-52.86.1
kernel-syms-3.12.61-52.86.1
kernel-xen-3.12.61-52.86.1
kernel-xen-base-3.12.61-52.86.1
kernel-xen-devel-3.12.61-52.86.1
kgraft-patch-3_12_61-52_86-default-1-2.1
kgraft-patch-3_12_61-52_86-xen-1-2.1

Ссылки

Описание

Linux kernel: heap out-of-bounds in AF_PACKET sockets. This new issue is analogous to previously disclosed CVE-2016-8655. In both cases, a socket option that changes socket state may race with safety checks in packet_set_ring. Previously with PACKET_VERSION. This time with PACKET_RESERVE. The solution is similar: lock the socket for the update. This issue may be exploitable, we did not investigate further. As this issue affects PF_PACKET sockets, it requires CAP_NET_RAW in the process namespace. But note that with user namespaces enabled, any process can create a namespace in which it has CAP_NET_RAW.

Затронутые продукты
SUSE Linux Enterprise Module for Public Cloud 12:kernel-ec2-3.12.61-52.86.1
SUSE Linux Enterprise Module for Public Cloud 12:kernel-ec2-devel-3.12.61-52.86.1
SUSE Linux Enterprise Module for Public Cloud 12:kernel-ec2-extra-3.12.61-52.86.1
SUSE Linux Enterprise Server 12-LTSS:kernel-default-3.12.61-52.86.1
Ссылки

Описание

Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 ("[IPv4/IPv6]: UFO Scatter-gather approach") on Oct 18 2005.

Затронутые продукты
SUSE Linux Enterprise Module for Public Cloud 12:kernel-ec2-3.12.61-52.86.1
SUSE Linux Enterprise Module for Public Cloud 12:kernel-ec2-devel-3.12.61-52.86.1
SUSE Linux Enterprise Module for Public Cloud 12:kernel-ec2-extra-3.12.61-52.86.1
SUSE Linux Enterprise Server 12-LTSS:kernel-default-3.12.61-52.86.1
Ссылки