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CVE-2019-2054

Status Candidate

Overview

In the seccomp implementation prior to kernel version 4.8, there is a possible seccomp bypass due to seccomp policies that allow the use of ptrace. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android ID: A-119769499

Related Files

Kernel Live Patch Security Notice LSN-0058-1
Posted Oct 23, 2019
Authored by Benjamin M. Romer

It was discovered that a race condition existed in the GFS2 file system in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash). It was discovered that a use-after-free error existed in the block layer subsystem of the Linux kernel when certain failure conditions occurred. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux
advisories | CVE-2016-10905, CVE-2018-20856, CVE-2018-20961, CVE-2018-20976, CVE-2018-21008, CVE-2019-0136, CVE-2019-10126, CVE-2019-10207, CVE-2019-11477, CVE-2019-11478, CVE-2019-11833, CVE-2019-12614, CVE-2019-14283, CVE-2019-14284, CVE-2019-14814, CVE-2019-14815, CVE-2019-14816, CVE-2019-14821, CVE-2019-14835, CVE-2019-2054, CVE-2019-2181, CVE-2019-3846
SHA-256 | 5442de6a129171e9103a7acd9d861ab0fda6074505e32a4ad08db9df45b30c61
Ubuntu Security Notice USN-4095-2
Posted Aug 14, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4095-2 - USN-4095-1 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 ESM. Eli Biham and Lior Neumann discovered that the Bluetooth implementation in the Linux kernel did not properly validate elliptic curve parameters during Diffie-Hellman key exchange in some situations. An attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-5383, CVE-2019-10126, CVE-2019-1125, CVE-2019-11833, CVE-2019-12614, CVE-2019-2054, CVE-2019-3846
SHA-256 | d920881c3d68724f3a5cfff94df2bf728ddbda002eda6e615804ba3f9aa609e1
Kernel Live Patch Security Notice LSN-0053-1
Posted Jul 29, 2019
Authored by Benjamin M. Romer

Vasiliy Kulikov discovered that the Bluetooth stack did not correctly check that device name strings were NULL terminated. A local attacker could exploit this to crash the system, leading to a denial of service, or leak contents of kernel stack memory, leading to a loss of privacy. It was discovered that the Linux kernel on ARM processors allowed a tracing process to modify a syscall after a seccomp decision had been made on that syscall. A local attacker could possibly use this to bypass seccomp restrictions. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux
advisories | CVE-2011-1079, CVE-2011-11833, CVE-2011-11884, CVE-2019-11815, CVE-2019-2054
SHA-256 | 6816c4785b56430dc635ceb03383ffc424c8c6dc0006c08814cc9b42003fff08
Ubuntu Security Notice USN-4076-1
Posted Jul 27, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4076-1 - It was discovered that a race condition existed in the Serial Attached SCSI implementation in the Linux kernel. A local attacker could possibly use this to cause a denial of service or execute arbitrary code. It was discovered that the ext4 file system implementation in the Linux kernel did not properly zero out memory in some situations. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2018-20836, CVE-2019-10142, CVE-2019-11833, CVE-2019-11884, CVE-2019-2054, CVE-2019-9503
SHA-256 | b13795081982c85c2eb246df67545853716b79439ee19e7a1344e8637acedcee
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