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Files from Mark Johnston

First Active2018-09-13
Last Active2019-07-25
FreeBSD Security Advisory - FreeBSD-SA-19:17.fd
Posted Jul 25, 2019
Authored by Mark Johnston | Site security.freebsd.org

FreeBSD Security Advisory - If a process attempts to transmit rights over a UNIX-domain socket and an error causes the attempt to fail, references acquired on the rights are not released and are leaked. This bug can be used to cause the reference counter to wrap around and free the corresponding file structure. A local user can exploit the bug to gain root privileges or escape from a jail.

tags | advisory, local, root
systems | unix, freebsd, bsd
advisories | CVE-2019-5607
MD5 | 1a3189674b2fd461c7cc9af0c29d8185
FreeBSD Security Advisory - FreeBSD-SA-18:12.elf
Posted Sep 13, 2018
Authored by Fraunhofer FKIE, Thomas Barabosch, Mark Johnston | Site security.freebsd.org

FreeBSD Security Advisory - Insufficient validation was performed in the ELF header parser, and malformed or otherwise invalid ELF binaries were not rejected as they should be. Execution of a malicious ELF binary may result in a kernel crash or may disclose kernel memory.

tags | advisory, kernel
systems | freebsd, bsd
advisories | CVE-2018-6924
MD5 | 00b792f169afd323a3ed205a6d9a506d
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