CVE-2015-8845

kernel: incorrect restoration of machine specific registers from userspace

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The tm_reclaim_thread function in arch/powerpc/kernel/process.c in the Linux kernel before 4.4.1 on powerpc platforms does not ensure that TM suspend mode exists before proceeding with a tm_reclaim call, which allows local users to cause a denial of service (TM Bad Thing exception and panic) via a crafted application.

La función tm_reclaim_thread en arch/powerpc/kernel/process.c en el Kernel de Linux en versiones anteriores a 4.4.1 sobre plataformas powerpc no asegura que exista el modo TM suspend antes de proceder con una llamada tm_reclaim, lo que permite a usuarios locales provocar una denegación de servicio (excepción TM Bad Thing y pánico) a través de una aplicación manipulada.

A flaw was found in the Linux kernel which could cause a kernel panic when restoring machine specific registers on the PowerPC platform. Incorrect transactional memory state registers could inadvertently change the call path on return from userspace and cause the kernel to enter an unknown state and crash.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Attack Vector

Local

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-04-13 CVE Reserved
2016-04-27 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-284: Improper Access Control
CWE-772: Missing Release of Resource after Effective Lifetime

CAPEC

References (13)

URL	Tag	Source
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2016/04/13/1	Mailing List
http://www.securitytracker.com/id/1035594	Vdb Entry

URL	Date	SRC

URL	Date	SRC
https://github.com/torvalds/linux/commit/7f821fc9c77a9b01fe7b1d6e72717b33d8d64142	2018-01-05

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7f821fc9c77a9b01fe7b1d6e72717b33d8d64142	2018-01-05
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html	2018-01-05
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html	2018-01-05
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html	2018-01-05
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html	2018-01-05
http://rhn.redhat.com/errata/RHSA-2016-2574.html	2018-01-05
http://rhn.redhat.com/errata/RHSA-2016-2584.html	2018-01-05
https://bugzilla.redhat.com/show_bug.cgi?id=1326540	2016-11-03
https://access.redhat.com/security/cve/CVE-2015-8845	2016-11-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 4.4 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.4"		-		Affected
Suse Search vendor "Suse"		Suse Linux Enterprise Live Patching Search vendor "Suse" for product "Suse Linux Enterprise Live Patching"				12.0 Search vendor "Suse" for product "Suse Linux Enterprise Live Patching" and version "12.0"		-		Affected
Suse Search vendor "Suse"		Suse Linux Enterprise Module For Public Cloud Search vendor "Suse" for product "Suse Linux Enterprise Module For Public Cloud"				12.0 Search vendor "Suse" for product "Suse Linux Enterprise Module For Public Cloud" and version "12.0"		-		Affected
Suse Search vendor "Suse"		Suse Linux Enterprise Real Time Extension Search vendor "Suse" for product "Suse Linux Enterprise Real Time Extension"				12 Search vendor "Suse" for product "Suse Linux Enterprise Real Time Extension" and version "12"		sp1		Affected
Suse Search vendor "Suse"		Suse Linux Enterprise Software Development Kit Search vendor "Suse" for product "Suse Linux Enterprise Software Development Kit"				12.0 Search vendor "Suse" for product "Suse Linux Enterprise Software Development Kit" and version "12.0"		-		Affected
Suse Search vendor "Suse"		Suse Linux Enterprise Workstation Extension Search vendor "Suse" for product "Suse Linux Enterprise Workstation Extension"				12.0 Search vendor "Suse" for product "Suse Linux Enterprise Workstation Extension" and version "12.0"		-		Affected
Novell Search vendor "Novell"		Suse Linux Enterprise Desktop Search vendor "Novell" for product "Suse Linux Enterprise Desktop"				12.0 Search vendor "Novell" for product "Suse Linux Enterprise Desktop" and version "12.0"		-		Affected
Novell Search vendor "Novell"		Suse Linux Enterprise Server Search vendor "Novell" for product "Suse Linux Enterprise Server"				12.0 Search vendor "Novell" for product "Suse Linux Enterprise Server" and version "12.0"		-		Affected