Vulnerability Name:

CVE-2015-8844 (CCN-112155)

Assigned:2016-04-13
Published:2016-04-13
Updated:2018-01-05
Summary:The signal implementation in the Linux kernel before 4.3.5 on powerpc platforms does not check for an MSR with both the S and T bits set, which allows local users to cause a denial of service (TM Bad Thing exception and panic) via a crafted application.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.7 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
4.4 Medium (REDHAT CVSS v2 Vector: AV:L/AC:M/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-20
CWE-772
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2015-8844

Source: CONFIRM
Type: Vendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d2b9d2a5ad5ef04ff978c9923d19730cb05efd55

Source: CCN
Type: RHSA-2016-2574
Important: kernel security, bug fix, and enhancement update

Source: REDHAT
Type: UNKNOWN
RHSA-2016:2574

Source: CCN
Type: RHSA-2016-2584
Important: kernel-rt security, bug fix, and enhancement update

Source: REDHAT
Type: UNKNOWN
RHSA-2016:2584

Source: CCN
Type: oss-sec Mailing List, Wed, 13 Apr 2016 21:18:16 +1000
CVE Request: Linux kernel: incorrect restoration of machine specific registers from signal handler.

Source: CCN
Type: oss-sec Mailing List, Wed, 13 Apr 2016 11:05:30 -0400 (EDT)
Re: CVE Request: Linux kernel: incorrect restoration of machine specific registers from signal handler.

Source: CCN
Type: IBM Security Bulletin T1025263 (PowerKVM)
Vulnerabilities in the Linux Kernel affect PowerKVM

Source: CCN
Type: IBM Security Bulletin N1022174 (Server Firmware, HMC and SDMC)
Vulnerabilities in kernel affect Power Hardware Management Console

Source: CCN
Type: IBM Security Bulletin S1012277 (Storwize V7000 (2076))
Multiple vulnerabilities in Linux Kernel affect IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products

Source: CCN
Type: IBM Security Bulletin 2004744 (QRadar Network Security)
IBM QRadar Network Security is affected by multiple vulnerabilities in Linux Kernel

Source: CCN
Type: IBM Security Bulletin 2010338 (Security Access Manager)
IBM Security Access Manager version 9.0.3.0 appliances are affected by multiple kernel vulnerabilities

Source: CONFIRM
Type: UNKNOWN
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5

Source: MLIST
Type: UNKNOWN
[oss-security] 20160413 CVE Request: Linux kernel: incorrect restoration of machine specific registers from signal handler.

Source: SECTRACK
Type: UNKNOWN
1035594

Source: CCN
Type: Red Hat Bugzilla – Bug 1326540
kernel: incorrect restoration of machine specific registers from userspace

Source: CONFIRM
Type: UNKNOWN
https://bugzilla.redhat.com/show_bug.cgi?id=1326540

Source: XF
Type: UNKNOWN
linux-kernel-cve20158844-dos(112155)

Source: CCN
Type: Linux Kernel GIT Repository
powerpc/tm: Block signal return setting invalid MSR state

Source: CONFIRM
Type: UNKNOWN
https://github.com/torvalds/linux/commit/d2b9d2a5ad5ef04ff978c9923d19730cb05efd55

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2015-8844

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 4.3.4)

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:7::client:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:7::computenode:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:7::server:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:7::workstation:*:*:*:*:*

    • Configuration RedHat 6:
  • cpe:/a:redhat:rhel_extras_rt:7:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:-:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:storwize_v7000_software:6.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:6.2:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:6.3:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:6.4:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.2:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:powerkvm:2.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.3:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.4:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.5:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.6:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:powerkvm:3.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_desktop:7:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_hpc_node:7:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server:7:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_workstation:7:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_real_time:7:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.6.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.7:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.7.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.8:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:7.8.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:qradar_network_security:5.4:*:*:*:*:*:*:*
  • OR cpe:/o:ibm:security_access_manager_firmware:9.0.3:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:8.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:storwize_v7000_software:8.1.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20162574
    P
    		RHSA-2016:2574: kernel security, bug fix, and enhancement update (Important)
    2016-11-03
    oval:com.redhat.rhsa:def:20162584
    P
    		RHSA-2016:2584: kernel-rt security, bug fix, and enhancement update (Important)
    2016-11-03
    oval:com.ubuntu.xenial:def:20158844000
    V
    		CVE-2015-8844 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-04-27
    oval:com.ubuntu.xenial:def:201588440000000
    V
    		CVE-2015-8844 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-04-27
    oval:com.ubuntu.precise:def:20158844000
    V
    		CVE-2015-8844 on Ubuntu 12.04 LTS (precise) - medium.
    2016-04-27
    oval:com.ubuntu.trusty:def:20158844000
    V
    		CVE-2015-8844 on Ubuntu 14.04 LTS (trusty) - medium.
    2016-04-27
    BACK
    linux linux kernel *
    linux linux kernel -
    ibm storwize v7000 software 6.1
    ibm storwize v7000 software 6.2
    ibm storwize v7000 software 6.3
    ibm storwize v7000 software 6.4
    ibm storwize v7000 software 7.1
    ibm storwize v7000 software 7.2
    ibm powerkvm 2.1
    ibm storwize v7000 software 7.3
    ibm storwize v7000 software 7.4
    ibm storwize v7000 software 7.5
    ibm storwize v7000 software 7.6
    ibm powerkvm 3.1
    redhat enterprise linux desktop 7
    redhat enterprise linux hpc node 7
    redhat enterprise linux server 7
    redhat enterprise linux workstation 7
    redhat enterprise linux for real time 7
    ibm storwize v7000 software 7.6.1
    ibm storwize v7000 software 7.7
    ibm storwize v7000 software 7.7.1
    ibm storwize v7000 software 7.8
    ibm storwize v7000 software 7.8.1
    ibm qradar network security 5.4
    ibm security access manager firmware 9.0.3
    ibm storwize v7000 software 8.1
    ibm storwize v7000 software 8.1.1