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CVE-2017-2596

Status Candidate

Overview

The nested_vmx_check_vmptr function in arch/x86/kvm/vmx.c in the Linux kernel through 4.9.8 improperly emulates the VMXON instruction, which allows KVM L1 guest OS users to cause a denial of service (host OS memory consumption) by leveraging the mishandling of page references.

Related Files

Red Hat Security Advisory 2017-1842-01
Posted Aug 2, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1842-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: An use-after-free flaw was found in the Linux kernel which enables a race condition in the L2TPv3 IP Encapsulation feature. A local user could use this flaw to escalate their privileges or crash the system. A flaw was found that can be triggered in keyring_search_iterator in keyring.c if type->match is NULL. A local user could use this flaw to crash the system or, potentially, escalate their privileges.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2014-7970, CVE-2014-7975, CVE-2015-8839, CVE-2015-8970, CVE-2016-10088, CVE-2016-10147, CVE-2016-10200, CVE-2016-6213, CVE-2016-7042, CVE-2016-7097, CVE-2016-8645, CVE-2016-9576, CVE-2016-9588, CVE-2016-9604, CVE-2016-9685, CVE-2016-9806, CVE-2017-2596, CVE-2017-2647, CVE-2017-2671, CVE-2017-5970, CVE-2017-6001, CVE-2017-6951, CVE-2017-7187, CVE-2017-7616, CVE-2017-7889, CVE-2017-8797, CVE-2017-8890, CVE-2017-9074
MD5 | e79dcd340ec8fd5ccd78d062d54ebf21
Red Hat Security Advisory 2017-2077-01
Posted Aug 2, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2077-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: An use-after-free flaw was found in the Linux kernel which enables a race condition in the L2TPv3 IP Encapsulation feature. A local user could use this flaw to escalate their privileges or crash the system. A flaw was found that can be triggered in keyring_search_iterator in keyring.c if type->match is NULL. A local user could use this flaw to crash the system or, potentially, escalate their privileges.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2014-7970, CVE-2014-7975, CVE-2015-8839, CVE-2015-8970, CVE-2016-10088, CVE-2016-10147, CVE-2016-10200, CVE-2016-6213, CVE-2016-7042, CVE-2016-7097, CVE-2016-8645, CVE-2016-9576, CVE-2016-9588, CVE-2016-9604, CVE-2016-9685, CVE-2016-9806, CVE-2017-2596, CVE-2017-2647, CVE-2017-2671, CVE-2017-5970, CVE-2017-6001, CVE-2017-6951, CVE-2017-7187, CVE-2017-7616, CVE-2017-7889, CVE-2017-8797, CVE-2017-8890, CVE-2017-9074
MD5 | 06777be13da445d34278d3bd85082db2
Ubuntu Security Notice USN-3361-1
Posted Jul 21, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3361-1 - USN-3358-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS. Please note that this update changes the Linux HWE kernel to the 4.10 based kernel from Ubuntu 17.04, superseding the 4.8 based HWE kernel from Ubuntu 16.10. Ben Harris discovered that the Linux kernel would strip extended privilege attributes of files when performing a failed unprivileged system call. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2015-1350, CVE-2016-10208, CVE-2016-8405, CVE-2016-8636, CVE-2016-9083, CVE-2016-9084, CVE-2016-9191, CVE-2016-9604, CVE-2016-9755, CVE-2017-2583, CVE-2017-2584, CVE-2017-2596, CVE-2017-2618, CVE-2017-2671, CVE-2017-5546, CVE-2017-5549, CVE-2017-5550, CVE-2017-5551, CVE-2017-5576, CVE-2017-5669, CVE-2017-5897, CVE-2017-5970, CVE-2017-6001, CVE-2017-6214, CVE-2017-6345, CVE-2017-6346, CVE-2017-6347, CVE-2017-6348
MD5 | 2a81ab5a406b26495cf15b17d009be23
Ubuntu Security Notice USN-3312-2
Posted Jun 7, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3312-2 - USN-3312-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that the netfilter netlink implementation in the Linux kernel did not properly validate batch messages. A local attacker with the CAP_NET_ADMIN capability could use this to expose sensitive information or cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-7913, CVE-2016-7917, CVE-2016-8632, CVE-2016-9083, CVE-2016-9084, CVE-2016-9604, CVE-2017-0605, CVE-2017-2596, CVE-2017-2671, CVE-2017-6001, CVE-2017-7472, CVE-2017-7618, CVE-2017-7645, CVE-2017-7889, CVE-2017-7895
MD5 | f8dcccce709ef81f0592b215acb9e196
Ubuntu Security Notice USN-3312-1
Posted Jun 7, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3312-1 - It was discovered that the netfilter netlink implementation in the Linux kernel did not properly validate batch messages. A local attacker with the CAP_NET_ADMIN capability could use this to expose sensitive information or cause a denial of service. Qian Zhang discovered a heap-based buffer overflow in the tipc_msg_build function in the Linux kernel. A local attacker could use to cause a denial of service or possibly execute arbitrary code with administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2016-7913, CVE-2016-7917, CVE-2016-8632, CVE-2016-9083, CVE-2016-9084, CVE-2016-9604, CVE-2017-0605, CVE-2017-2596, CVE-2017-2671, CVE-2017-6001, CVE-2017-7472, CVE-2017-7618, CVE-2017-7645, CVE-2017-7889, CVE-2017-7895
MD5 | faa65f948d2b34a3bc146375c9d83828
Ubuntu Security Notice USN-3293-1
Posted May 17, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3293-1 - Dmitry Vyukov discovered that KVM implementation in the Linux kernel improperly emulated the VMXON instruction. A local attacker in a guest OS could use this to cause a denial of service in the host OS. Dmitry Vyukov discovered that the generic SCSI subsystem in the Linux kernel contained a stack-based buffer overflow. A local attacker with access to an sg device could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-2596, CVE-2017-7187, CVE-2017-7261, CVE-2017-7294, CVE-2017-7477, CVE-2017-7616
MD5 | e6e42e1d3e3f0d5fd9a22f1347025056
Debian Security Advisory 3791-1
Posted Feb 23, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3791-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or have other impacts.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2016-6786, CVE-2016-6787, CVE-2016-8405, CVE-2016-9191, CVE-2017-2583, CVE-2017-2584, CVE-2017-2596, CVE-2017-2618, CVE-2017-5549, CVE-2017-5551, CVE-2017-5897, CVE-2017-5970, CVE-2017-6001, CVE-2017-6074
MD5 | 68653b8767a22eadb7cf331b1f8daa59
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