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CVE-2016-8666

Status Candidate

Overview

The IP stack in the Linux kernel before 4.6 allows remote attackers to cause a denial of service (stack consumption and panic) or possibly have unspecified other impact by triggering use of the GRO path for packets with tunnel stacking, as demonstrated by interleaved IPv4 headers and GRE headers, a related issue to CVE-2016-7039.

Related Files

Red Hat Security Advisory 2017-0004-01
Posted Jan 3, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0004-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way the Linux kernel's networking subsystem handled offloaded packets with multiple layers of encapsulation in the GRO code path. A remote attacker could use this flaw to trigger unbounded recursion in the kernel that could lead to stack corruption, resulting in a system crash.

tags | advisory, remote, kernel
systems | linux, redhat
advisories | CVE-2016-8666
MD5 | fd13dc66551f79bb42b01c7744c21f53
Kernel Live Patch Security Notice LSN-0012-1
Posted Oct 20, 2016
Authored by Luis Henriques

Vladimir Benes discovered an unbounded recursion in the VLAN and TEB Generic Receive Offload (GRO) processing implementations in the Linux kernel, A remote attacker could use this to cause a stack corruption, leading to a denial of service (system crash). It was discovered that a race condition existed in the memory manager of the Linux kernel when handling copy-on-write breakage of private read-only memory mappings. A local attacker could use this to gain administrative privileges.

tags | advisory, remote, denial of service, kernel, local
systems | linux
advisories | CVE-2016-5195, CVE-2016-7039, CVE-2016-8666
MD5 | edeba226c2ac5f34fa32774519f42c74
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