PT-2016-3146 · Linux+1 · Linux Kernel+1

Adam Mariš · Published 2016-12-28 · Updated 2023-01-18 · CVE-2012-6704

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.5

Description The issue is related to the sock setsockopt function in the Linux kernel, which mishandles negative values of sk sndbuf and sk rcvbuf. This can be exploited by local users with the CAP NET ADMIN capability to cause a denial of service, including memory corruption and system crash, by making a crafted setsockopt system call with the SO SNDBUF or SO RCVBUF option.

Recommendations For Linux kernel versions prior to 3.5, update to version 3.5 or later to resolve the issue. As a temporary workaround, consider restricting the use of the CAP NET ADMIN capability to minimize the risk of exploitation. Additionally, avoid using the SO SNDBUF and SO RCVBUF options in setsockopt system calls until the issue is resolved.

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2017-01665

CVE-2012-6704

DLA-772-1

SUSE-SU-2017:0333-1

SUSE-SU-2017:0437-1

SUSE-SU-2017:0494-1

SUSE-SU-2017:1102-1

Affected Products

Linux Kernel

Suse

References · 280

• https://github.com/torvalds/linux/commit/82981930125abfd39d7c8378a9cfdf5e1be2002b · Patch
• https://osv.dev/vulnerability/SUSE-SU-2017:0437-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2012-6704 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2012-6704 · Vendor Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=82981930125abfd39d7c8378a9cfdf5e1be2002b · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2012-6704 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2012-6704 · Security Note
• https://ubuntu.com/security/CVE-2012-6704 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:0494-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2012-6704 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:0333-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2012-6704 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:1102-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2017-01665 · Security Note
• https://bugzilla.suse.com/935436 · Note