CVE-2016-6198

MEDIUM

Linux kernel <4.5.5 - DoS

Title source: llm

Description

The filesystem layer in the Linux kernel before 4.5.5 proceeds with post-rename operations after an OverlayFS file is renamed to a self-hardlink, which allows local users to cause a denial of service (system crash) via a rename system call, related to fs/namei.c and fs/open.c.

References (15)

[Issue Tracking, Patch] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54d5ca871e72f2bb172ec9323497f01cd5091ec7

[Issue Tracking, Patch] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-1847.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-1875.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-2574.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-2584.html

[Release Notes] http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5

[Exploit, Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/07/11/8

[Third Party Advisory] http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html

[Vendor Advisory] http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/91709

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1036273

[Issue Tracking] https://bugzilla.redhat.com/show_bug.cgi?id=1355654

[Issue Tracking, Patch] https://github.com/torvalds/linux/commit/54d5ca871e72f2bb172ec9323497f01cd5091ec7

[Issue Tracking, Patch] https://github.com/torvalds/linux/commit/9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca

Scores

CVSS v3 5.5

EPSS 0.0004

EPSS Percentile 12.4%

Attack Vector LOCAL

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

Classification

CWE

CWE-284

Status draft

Affected Products (3)

linux/linux_kernel < 4.5.4

oracle/linux

oracle/vm_server

Timeline

Published Aug 06, 2016

Tracked Since Feb 18, 2026