CVE-2018-17155: Infoleak

First published: Fri Sep 28 2018(Updated: )

In FreeBSD before 11.2-STABLE(r338983), 11.2-RELEASE-p4, 11.1-RELEASE-p15, 10.4-STABLE(r338984), and 10.4-RELEASE-p13, due to insufficient initialization of memory copied to userland in the getcontext and swapcontext system calls, small amounts of kernel memory may be disclosed to userland processes. Unprivileged authenticated local users may be able to access small amounts privileged kernel data.

Credit: secteam@freebsd.org

Affected Software	Affected Version	How to fix
FreeBSD FreeBSD	<11.2
FreeBSD FreeBSD	=10.4
FreeBSD FreeBSD	=10.4-p13
FreeBSD FreeBSD	=11.1-p15
FreeBSD FreeBSD	=11.2-p4

Remedy

https://security.FreeBSD.org/advisories/FreeBSD-EN-18:12.mem.asc

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Reference Links

https://security.FreeBSD.org/advisories/FreeBSD-EN-18:12.mem.asc

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