CVE-2016-0774 Information

Description

The (1) pipe_read and (2) pipe_write implementations in fs/pipe.c in a certain Linux kernel backport in the linux package before 3.2.73-2+deb7u3 on Debian wheezy and the kernel package before 3.10.0-229.26.2 on Red Hat Enterprise Linux (RHEL) 7.1 do not properly consider the side effects of failed __copy_to_user_inatomic and __copy_from_user_inatomic calls which allows local users to cause a denial of service (system crash) or possibly gain privileges via a crafted application aka an \I/O vector array overrun.\ NOTE: this vulnerability exists because of an incorrect fix for CVE-2015-1805.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00026.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00027.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00028.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00029.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00030.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00031.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00032.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00033.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00034.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00036.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00037.html http://rhn.redhat.com/errata/RHSA-2016-0494.html http://rhn.redhat.com/errata/RHSA-2016-0617.html http://source.android.com/security/bulletin/2016-05-01.html http://www.debian.org/security/2016/dsa-3503 http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html http://www.securityfocus.com/bid/84126 http://www.ubuntu.com/usn/USN-2967-1 http://www.ubuntu.com/usn/USN-2967-2 http://www.ubuntu.com/usn/USN-2968-1 http://www.ubuntu.com/usn/USN-2968-2 https://bugzilla.redhat.com/show_bug.cgi?id=1303961 https://security-tracker.debian.org/tracker/CVE-2016-0774

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.8