Package: src:kfreebsd-10 Version: 10.1~svn274115-2 Severity: grave Tags: security upstream patch Control: found -1 kfreebsd-10/10.0-3
Hi, An unprivileged local user can trigger an out-of-bounds memory access in the kernel via an ioctl to vt(4) (aka. newcons). https://security.FreeBSD.org/patches/EN-15:01/vt.patch Upstream's advisory only describes potential impact as a kernel panic. The original researcher's advisory mentioned privilege escalation, but it's ambiguous if that referred to this bug, and unclear if it could be exploitable for that. Debian GNU/kFreeBSD introduced newcons into 10.0-3 as a backport. kfreebsd-10 in jessie/sid enables it by default. So does kfreebsd-11 in experimental. kfreebsd-8 and -9 in wheezy are unaffected as they do not have newcons. -- System Information: Debian Release: jessie/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'stable') Architecture: kfreebsd-amd64 (x86_64) Kernel: kFreeBSD 9.0-2-amd64-xenhvm-ipsec Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash -- To UNSUBSCRIBE, email to debian-bsd-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150225112748.60804.70371.report...@sid.kfreebsd-amd64.pyro.eu.org
