| Revision Date: | 2016-02-07 | Version: | 1 | | Title: | CVE-2015-7550 on Ubuntu 16.04 LTS (xenial) - medium. | | Description: | The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls. It was discovered that the Linux kernel keyring subsystem contained a race between read and revoke operations. A local attacker could use this to cause a denial of service (system crash).
| | Family: | unix | Class: | vulnerability | | Status: | | Reference(s): | CVE-2015-7550
| | Platform(s): | Ubuntu 16.04 LTS
| Product(s): | | | Definition Synopsis | | Ubuntu 16.04 LTS (xenial) is installed. AND Package Information
NOT While related to the CVE in some way, the 'linux' package in xenial is not affected (note: '4.4.0-2.16').
OR NOT While related to the CVE in some way, the 'linux-aws' package in xenial is not affected (note: '4.4.0-1001.10').
OR While related to the CVE in some way, a decision has been made to ignore it (note: 'abandoned').
OR NOT While related to the CVE in some way, the 'linux-gke' package in xenial is not affected (note: '4.4.0-1003.3').
OR While related to the CVE in some way, a decision has been made to ignore it (note: 'abandoned').
OR NOT While related to the CVE in some way, the 'linux-hwe' package in xenial is not affected (note: '4.8.0-36.36~16.04.1').
OR NOT While related to the CVE in some way, the 'linux-hwe-edge' package in xenial is not affected (note: '4.8.0-36.36~16.04.1').
OR While related to the CVE in some way, a decision has been made to ignore it (note: 'abandoned').
OR NOT While related to the CVE in some way, the 'linux-raspi2' package in xenial is not affected (note: '4.4.0-1003.4').
OR NOT While related to the CVE in some way, the 'linux-snapdragon' package in xenial is not affected (note: '4.4.0-1012.12').
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