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CVE-2017-7472

Status Candidate

Overview

The KEYS subsystem in the Linux kernel before 4.10.13 allows local users to cause a denial of service (memory consumption) via a series of KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring calls.

Related Files

Red Hat Security Advisory 2018-0152-01
Posted Jan 25, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-0152-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: A flaw was found in the Linux kernel's key management system where it was possible for an attacker to escalate privileges or crash the machine. If a user key gets negatively instantiated, an error code is cached in the payload area. A negatively instantiated key may be then be positively instantiated by updating it with valid data. However, the ->update key type method must be aware that the error code may be there.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2015-8539, CVE-2017-15649, CVE-2017-7472
SHA-256 | 542736e72201d4bc7e182580bb87093a38137b908e16f04ca6ce6bcd452b2b14
Red Hat Security Advisory 2018-0151-01
Posted Jan 25, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-0151-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions. There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2015-8539, CVE-2017-12192, CVE-2017-12193, CVE-2017-15649, CVE-2017-7472
SHA-256 | 951c945f80af6950640a6bef9c9251681ffd34b852d4e73d0955c9dff67c1f96
Red Hat Security Advisory 2018-0181-01
Posted Jan 25, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-0181-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: A flaw was found in the Linux kernel's key management system where it was possible for an attacker to escalate privileges or crash the machine. If a user key gets negatively instantiated, an error code is cached in the payload area. A negatively instantiated key may be then be positively instantiated by updating it with valid data. However, the ->update key type method must be aware that the error code may be there.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2015-8539, CVE-2017-15649, CVE-2017-7472
SHA-256 | 62bb574d93f6cb7c0c62bc711bda68bededd1ebc9208a76862e6ca07a8f6a316
Ubuntu Security Notice USN-3422-2
Posted Sep 19, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3422-2 - USN-3422-1 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 LTS. It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-10044, CVE-2016-10200, CVE-2016-7097, CVE-2016-8650, CVE-2016-9083, CVE-2016-9084, CVE-2016-9178, CVE-2016-9191, CVE-2016-9604, CVE-2016-9754, CVE-2017-1000251, CVE-2017-5970, CVE-2017-6214, CVE-2017-6346, CVE-2017-6951, CVE-2017-7187, CVE-2017-7472, CVE-2017-7541
SHA-256 | e27780348a8f8c6fe548f4fc823a3618d213ad1642631507a915d8fe3daa444c
Ubuntu Security Notice USN-3422-1
Posted Sep 19, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3422-1 - It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service. It was discovered that the asynchronous I/O subsystem of the Linux kernel did not properly set permissions on aio memory mappings in some situations. An attacker could use this to more easily exploit other vulnerabilities. Various other issues were also addressed.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-10044, CVE-2016-10200, CVE-2016-7097, CVE-2016-8650, CVE-2016-9083, CVE-2016-9084, CVE-2016-9178, CVE-2016-9191, CVE-2016-9604, CVE-2016-9754, CVE-2017-1000251, CVE-2017-5970, CVE-2017-6214, CVE-2017-6346, CVE-2017-6951, CVE-2017-7187, CVE-2017-7472, CVE-2017-7541
SHA-256 | 59a73826987ffa71daea232f292915ef55c02017c0d971591db5164b7d4e6e9d
Kernel Live Patch Security Notice LSN-0025-1
Posted Jul 16, 2017
Authored by Benjamin M. Romer

Andrey Konovalov discovered a use-after-free vulnerability in the DCCP implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges. It was discovered that the stack guard page for processes in the Linux kernel was not sufficiently large enough to prevent overlapping with the heap. An attacker could leverage this with another vulnerability to execute arbitrary code and gain administrative privileges. Various other vulnerabilities were addressed.

tags | advisory, denial of service, arbitrary, kernel, local, vulnerability
systems | linux
advisories | CVE-2016-8632, CVE-2016-9604, CVE-2017-1000364, CVE-2017-2584, CVE-2017-6074, CVE-2017-7346, CVE-2017-7472, CVE-2017-8890, CVE-2017-9074, CVE-2017-9075, CVE-2017-9242
SHA-256 | 91cb2bc988d62a783323447ecb77bf0d50a13e5d484b3ad48a99a46f99980cdf
Linux Kernel keyctl_set_reqkey_keyring Denial Of Service
Posted Jun 8, 2017
Authored by Marcus Meissner

Linux Kernel versions prior to 4.10.13 suffer from a keyctl_set_reqkey_keyring local denial of service vulnerability.

tags | exploit, denial of service, kernel, local
systems | linux
advisories | CVE-2017-7472
SHA-256 | eb31ce0a0f03adae308aa72256412f48eb27210c5ccb26b03e8f3b4580d6441b
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
SHA-256 | 9bc4f5c509d58e7374d08b91a33f59e8cc908ffa5e09f39be89e361fa0dd271e
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
SHA-256 | f93b3056d137e6f094a683c78f33de2cfc51578e2b30f5bf0580b49f3136e70e
Ubuntu Security Notice USN-3314-1
Posted Jun 7, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3314-1 - It was discovered that the keyring implementation in the Linux kernel in some situations did not prevent special internal keyrings from being joined by userspace keyrings. A privileged local attacker could use this to bypass module verification. It was discovered that a buffer overflow existed in the trace subsystem in the Linux kernel. A privileged local attacker could use this to execute arbitrary code. Various other issues were also addressed.

tags | advisory, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2016-9604, CVE-2017-0605, CVE-2017-2671, CVE-2017-7277, CVE-2017-7472, CVE-2017-7618, CVE-2017-7645, CVE-2017-7889, CVE-2017-7895, CVE-2017-7979, CVE-2017-8063, CVE-2017-8064, CVE-2017-8067
SHA-256 | 97b6224fb0c1440e3c27196c751fe7e85e5f5e540f680453e3395eb740d8b882
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