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CVE-2017-15951

Status Candidate

Overview

The KEYS subsystem in the Linux kernel before 4.13.10 does not correctly synchronize the actions of updating versus finding a key in the "negative" state to avoid a race condition, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls.

Related Files

Ubuntu Security Notice USN-3507-2
Posted Dec 9, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3507-2 - Mohamed Ghannam discovered that a use-after-free vulnerability existed in the Netlink subsystem in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the Linux kernel did not properly handle copy-on- write of transparent huge pages. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-1000405, CVE-2017-12193, CVE-2017-15299, CVE-2017-15306, CVE-2017-15951, CVE-2017-16939
MD5 | e4e9ca45d6a9e4cece95a15bfca16c42
Ubuntu Security Notice USN-3507-1
Posted Dec 7, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3507-1 - Mohamed Ghannam discovered that a use-after-free vulnerability existed in the Netlink subsystem in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the Linux kernel did not properly handle copy-on- write of transparent huge pages. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-1000405, CVE-2017-12193, CVE-2017-15299, CVE-2017-15306, CVE-2017-15951, CVE-2017-16535, CVE-2017-16643, CVE-2017-16939
MD5 | ee6c4d967ff24654f431006a52b99e57
Ubuntu Security Notice USN-3485-3
Posted Nov 22, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3485-3 - It was discovered that a race condition existed in the ALSA subsystem of the Linux kernel when creating and deleting a port via ioctl. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Eric Biggers discovered that the key management subsystem in the Linux kernel did not properly restrict adding a key that already exists but is uninstantiated. 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-2017-15265, CVE-2017-15299, CVE-2017-15649, CVE-2017-15951, CVE-2017-16525, CVE-2017-16526, CVE-2017-16527, CVE-2017-16529, CVE-2017-16530, CVE-2017-16531, CVE-2017-16533, CVE-2017-16534, CVE-2017-16535
MD5 | b42a8de1b5ec762ade00ecbe31f381cf
Ubuntu Security Notice USN-3485-2
Posted Nov 20, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3485-2 - USN-3485-1 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 a race condition existed in the ALSA subsystem of the Linux kernel when creating and deleting a port via ioctl. 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, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-15265, CVE-2017-15299, CVE-2017-15649, CVE-2017-15951, CVE-2017-16525, CVE-2017-16526, CVE-2017-16527, CVE-2017-16529, CVE-2017-16530, CVE-2017-16531, CVE-2017-16533, CVE-2017-16534, CVE-2017-16535
MD5 | 5d93020024e24d68a43b1db5e4571ef0
Ubuntu Security Notice USN-3485-1
Posted Nov 20, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3485-1 - It was discovered that a race condition existed in the ALSA subsystem of the Linux kernel when creating and deleting a port via ioctl. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Eric Biggers discovered that the key management subsystem in the Linux kernel did not properly restrict adding a key that already exists but is uninstantiated. 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-2017-15265, CVE-2017-15299, CVE-2017-15649, CVE-2017-15951, CVE-2017-16525, CVE-2017-16526, CVE-2017-16527, CVE-2017-16529, CVE-2017-16530, CVE-2017-16531, CVE-2017-16533, CVE-2017-16534, CVE-2017-16535
MD5 | 04e7255785511894b9481aaf658d47a8
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