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CVE-2017-12154

Status Candidate

Overview

Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization (nVMX) feature enabled (nested=1), is vulnerable to a crash due to disabled external interrupts. As L2 guest could access (r/w) hardware CR8 register of the host(L0). In a nested visualization setup, L2 guest user could use this flaw to potentially crash the host(L0) resulting in DoS.

Related Files

Red Hat Security Advisory 2019-1946-01
Posted Jul 30, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1946-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer overflow and bypass vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2017-12154, CVE-2017-15129, CVE-2017-15274, CVE-2018-14633, CVE-2018-3693
SHA-256 | 63b6a490d137d009c8c38e9c0cfd58b6ae5a7b3ceffe94f2430a2d74fc468c8f
Ubuntu Security Notice USN-3698-2
Posted Jul 3, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3698-2 - USN-3698-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 ESM. It was discovered that the nested KVM implementation in the Linux kernel in some situations did not properly prevent second level guests from reading and writing the hardware CR8 register. A local attacker in a guest 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-2017-12154, CVE-2017-12193, CVE-2017-15265, CVE-2018-1130, CVE-2018-3665, CVE-2018-5750, CVE-2018-5803, CVE-2018-6927, CVE-2018-7755, CVE-2018-7757
SHA-256 | 3a1e12e3782c7d4798f3d9810f6fccc5915c7ad2dec33af797f2a9aa81fb5037
Ubuntu Security Notice USN-3698-1
Posted Jul 2, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3698-1 - It was discovered that the nested KVM implementation in the Linux kernel in some situations did not properly prevent second level guests from reading and writing the hardware CR8 register. A local attacker in a guest could use this to cause a denial of service. Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array implementation in the Linux kernel sometimes did not properly handle adding a new entry. 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
systems | linux, ubuntu
advisories | CVE-2017-12154, CVE-2017-12193, CVE-2017-15265, CVE-2018-1130, CVE-2018-3665, CVE-2018-5750, CVE-2018-5803, CVE-2018-6927, CVE-2018-7755, CVE-2018-7757
SHA-256 | 7da0a1087ba0d19f5b16753982535d7adcdc67fada9d245a7c967312fca4844c
Red Hat Security Advisory 2018-1062-01
Posted Apr 11, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1062-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer overflow, bypass, denial of service, randomization, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2016-3672, CVE-2016-7913, CVE-2016-8633, CVE-2017-1000252, CVE-2017-1000407, CVE-2017-1000410, CVE-2017-12154, CVE-2017-12190, CVE-2017-13166, CVE-2017-14140, CVE-2017-15116, CVE-2017-15121, CVE-2017-15126, CVE-2017-15127, CVE-2017-15129, CVE-2017-15265, CVE-2017-17448, CVE-2017-17449, CVE-2017-17558, CVE-2017-18017, CVE-2017-18203, CVE-2017-7294, CVE-2017-8824, CVE-2017-9725, CVE-2018-1000004, CVE-2018-5750
SHA-256 | fbeade70a9a2b1fd9926eaf605a9a3afcda14c9b6e58abd7aae2926d31ecbaa9
Red Hat Security Advisory 2018-0676-01
Posted Apr 11, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-0676-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include buffer overflow, bypass, denial of service, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2016-3672, CVE-2016-7913, CVE-2016-8633, CVE-2017-1000252, CVE-2017-1000407, CVE-2017-1000410, CVE-2017-12154, CVE-2017-12190, CVE-2017-13166, CVE-2017-14140, CVE-2017-15116, CVE-2017-15121, CVE-2017-15126, CVE-2017-15127, CVE-2017-15129, CVE-2017-15265, CVE-2017-17053, CVE-2017-17448, CVE-2017-17449, CVE-2017-17558, CVE-2017-18017, CVE-2017-18203, CVE-2017-7294, CVE-2017-8824, CVE-2017-9725, CVE-2018-1000004
SHA-256 | 760529e5784a4c45d323b6b90d60c38cfaa4a399d95492fd1f96c65cfeea827b
Kernel Live Patch Security Notice LSN-0032-2
Posted Nov 29, 2017
Authored by Benjamin M. Romer

Anthony Perard discovered that the Xen virtual block driver did not properly initialize some data structures before passing them to user space. A local attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. Bo Zhang discovered that the netlink wireless configuration interface in the Linux kernel did not properly validate attributes when handling certain requests. A local attacker with the CAP_NET_ADMIN could use this to cause a denial of service (system crash). It was discovered that the nested KVM implementation in the Linux kernel in some situations did not properly prevent second level guests from reading and writing the hardware CR8 register. A local attacker in a guest could use this to cause a denial of service (system crash). Otto Ebeling discovered that the memory manager in the Linux kernel did not properly check the effective UID in some situations. A local attacker could use this to expose sensitive information.

tags | advisory, denial of service, kernel, local
systems | linux
advisories | CVE-2017-10911, CVE-2017-12153, CVE-2017-12154, CVE-2017-14140
SHA-256 | 4ac498fe64bdf58c75838bf98a75ded8239a7ff13c95ce564a4824dd91f56222
Kernel Live Patch Security Notice LSN-0032-1
Posted Nov 22, 2017
Authored by Benjamin M. Romer

Anthony Perard discovered that the Xen virtual block driver did not properly initialize some data structures before passing them to user space. A local attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. Bo Zhang discovered that the netlink wireless configuration interface in the Linux kernel did not properly validate attributes when handling certain requests. A local attacker with the CAP_NET_ADMIN could use this to cause a denial of service (system crash). It was discovered that the nested KVM implementation in the Linux kernel in some situations did not properly prevent second level guests from reading and writing the hardware CR8 register. A local attacker in a guest could use this to cause a denial of service (system crash). Otto Ebeling discovered that the memory manager in the Linux kernel did not properly check the effective UID in some situations. A local attacker could use this to expose sensitive information.

tags | advisory, denial of service, kernel, local
systems | linux
advisories | CVE-2017-10911, CVE-2017-12153, CVE-2017-12154, CVE-2017-14140
SHA-256 | edb82348b5a039b33b9384fa15982bf40763c4759bd961c0919c901dad68ef13
Ubuntu Security Notice USN-3487-1
Posted Nov 22, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3487-1 - It was discovered that the KVM subsystem in the Linux kernel did not properly keep track of nested levels in guest page tables. A local attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code in the host OS. It was discovered that on the PowerPC architecture, the kernel did not properly sanitize the signal stack when handling sigreturn. A local attacker 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, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-1000255, CVE-2017-12153, CVE-2017-12154, CVE-2017-12188, CVE-2017-12190, CVE-2017-12192, CVE-2017-14156, CVE-2017-14489, CVE-2017-14954, CVE-2017-15265, CVE-2017-15537, CVE-2017-15649, CVE-2017-16525, CVE-2017-16526, CVE-2017-16527, CVE-2017-16529, CVE-2017-16530, CVE-2017-16531, CVE-2017-16533, CVE-2017-16534
SHA-256 | 5d3daa3acae196e215ffb752dacad9fbeacb9381db28059612dbc4bf68e35c68
Ubuntu Security Notice USN-3469-1
Posted Oct 31, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3469-1 - Anthony Perard discovered that the Xen virtual block driver did not properly initialize some data structures before passing them to user space. A local attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. Bo Zhang discovered that the netlink wireless configuration interface in the Linux kernel did not properly validate attributes when handling certain requests. A local attacker with the CAP_NET_ADMIN could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-10911, CVE-2017-12153, CVE-2017-12154, CVE-2017-12192, CVE-2017-14051, CVE-2017-14156, CVE-2017-14340, CVE-2017-14489, CVE-2017-14991, CVE-2017-15537, CVE-2017-9984, CVE-2017-9985
SHA-256 | 04cc3e67a19f3ee8637e2800765e1cf7c138d3aee0e7534753e7272826f5de09
Ubuntu Security Notice USN-3469-2
Posted Oct 31, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3469-2 - USN-3469-1 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. Anthony Perard discovered that the Xen virtual block driver did not properly initialize some data structures before passing them to user space. A local attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-10911, CVE-2017-12153, CVE-2017-12154, CVE-2017-12192, CVE-2017-14051, CVE-2017-14156, CVE-2017-14340, CVE-2017-14489, CVE-2017-14991, CVE-2017-15537, CVE-2017-9984, CVE-2017-9985
SHA-256 | 2581cae25d586f8b72eaa828c6ca5f97ec0fd29b3967bf2e5a8351f98d807994
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