#VU3914 Memory leak in linux (Debian package) and Red Hat Enterprise Linux for x86_64 - CVE-2016-0774

Vulnerability identifier: #VU3914

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2016-0774

CWE-ID: CWE-401

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
linux (Debian package)
Red Hat Enterprise Linux for x86_64

Software vendor:
Debian
Red Hat Inc.

The vulnerability allows a local attacker to cause DoS condition or gain elevated privileges on the target system.

The weakness exists in the (1) pipe_read and (2) pipe_write implementations in fs/pipe.c due to improper consideration of the side effects of failed __copy_to_user_inatomic and __copy_from_user_inatomic calls. A local attacker can trigger memory leak, cause the service to crash or gain root privileges.

Update Linux kernel backport in the linux package to 3.2.73-2+deb7u3 on Debian wheezy and the kernel package to 3.10.0-229.26.2 on Red Hat Enterprise Linux (RHEL) 7.1.

• https://security-tracker.debian.org/tracker/CVE-2016-0774
• https://access.redhat.com/security/cve/cve-2016-0774