CVE-2017-15649 Information

Description

net/packet/af_packet.c in the Linux kernel before 4.13.6 allows local users to gain privileges via crafted system calls that trigger mishandling of packet_fanout data structures because of a race condition (involving fanout_add and packet_do_bind) that leads to a use-after-free a different vulnerability than CVE-2017-6346.

CVSS Vector

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

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=008ba2a13f2d04c947adc536d19debb8fe66f110 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4971613c1639d8e5f102c4e797c3bf8f83a5a69e http://patchwork.ozlabs.org/patch/813945/ http://patchwork.ozlabs.org/patch/818726/ http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6 http://www.securityfocus.com/bid/101573 https://access.redhat.com/errata/RHSA-2018:0151 https://access.redhat.com/errata/RHSA-2018:0152 https://access.redhat.com/errata/RHSA-2018:0181 https://blogs.securiteam.com/index.php/archives/3484 https://github.com/torvalds/linux/commit/008ba2a13f2d04c947adc536d19debb8fe66f110 https://github.com/torvalds/linux/commit/4971613c1639d8e5f102c4e797c3bf8f83a5a69e https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html https://usn.ubuntu.com/3754-1/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8