ESB-2018.2940 - [SUSE] kernel: Multiple vulnerabilities 2018-10-01

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2940
        SUSE Security Update: Security update for the Linux Kernel
                              1 October 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           kernel
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Root Compromise          -- Existing Account      
                   Denial of Service        -- Remote/Unauthenticated
                   Access Confidential Data -- Existing Account      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-15471 CVE-2018-10938 CVE-2018-10902
                   CVE-2018-10853  

Reference:         ESB-2018.2885
                   ESB-2018.2831
                   ESB-2018.2698

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2018/suse-su-20182938-1/
   https://www.suse.com/support/update/announcement/2018/suse-su-20182933-1/
   https://www.suse.com/support/update/announcement/2018/suse-su-20182940-1/
   https://www.suse.com/support/update/announcement/2018/suse-su-20182935-1/

Comment: This bulletin contains four (4) SUSE security advisories.

- --------------------------BEGIN INCLUDED TEXT--------------------

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 2 for SLE 15)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:2938-1
Rating:             important
References:         #1106191 
Cross-References:   CVE-2018-10938
Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15
______________________________________________________________________________

   An update that fixes one vulnerability is now available.

Description:

   This update for the Linux Kernel 4.12.14-25_6 fixes one issue.

   The following security issue was fixed:

   - CVE-2018-10938: It was found that a crafted network packet sent remotely
     by an attacker may force the kernel to enter an infinite loop in the
     cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a
     denial-of-service. A certain non-default configuration of LSM (Linux
     Security Module) and NetLabel should be set up on a system an attacker
     could leverage this flaw (bsc#1106191).


Patch Instructions:

   To install this SUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Module for Live Patching 15:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2075=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):

      kernel-livepatch-4_12_14-25_6-default-4-2.1
      kernel-livepatch-4_12_14-25_6-default-debuginfo-4-2.1


References:

   https://www.suse.com/security/cve/CVE-2018-10938.html
   https://bugzilla.suse.com/1106191

- ---

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 3 for SLE 15)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:2933-1
Rating:             important
References:         #1097108 #1103203 #1105026 
Cross-References:   CVE-2018-10853 CVE-2018-15471
Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15
______________________________________________________________________________

   An update that solves two vulnerabilities and has one
   errata is now available.

Description:

   This update for the Linux Kernel 4.12.14-25_11 fixes several issues.

   The following security issues were fixed:

   - CVE-2018-15471: An issue was discovered in xenvif_set_hash_mapping in
     drivers/net/xen-netback/hash.c. The Linux netback driver allowed
     frontends to control mapping of requests to request queues. When
     processing a request to set or change this mapping, some input
     validation (e.g., for an integer overflow) was missing or flawed,
     leading to OOB access in hash handling. A malicious or buggy frontend
     may cause the (usually privileged) backend to make out of bounds memory
     accesses, potentially resulting in one or more of privilege escalation,
     Denial of Service (DoS), or information leaks (bsc#1105026).
   - CVE-2018-10853: A KVM guest userspace to guest kernel write was fixed,
     which could be used by guest users to crash the guest kernel
     (bsc#1097108).

Patch Instructions:

   To install this SUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Module for Live Patching 15:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2072=1

Package List:

   - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):

      kernel-livepatch-4_12_14-25_13-default-2-2.2
      kernel-livepatch-4_12_14-25_13-default-debuginfo-2-2.2

References:

   https://www.suse.com/security/cve/CVE-2018-10853.html
   https://www.suse.com/security/cve/CVE-2018-15471.html
   https://bugzilla.suse.com/1097108
   https://bugzilla.suse.com/1103203
   https://bugzilla.suse.com/1105026

- ---

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 1 for SLE 15)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:2940-1
Rating:             important
References:         #1105323 #1106191 
Cross-References:   CVE-2018-10902 CVE-2018-10938
Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15
______________________________________________________________________________

   An update that fixes two vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.12.14-25_3 fixes several issues.

   The following security issues were fixed:

   - CVE-2018-10938: It was found that a crafted network packet sent remotely
     by an attacker may force the kernel to enter an infinite loop in the
     cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a
     denial-of-service. A certain non-default configuration of LSM (Linux
     Security Module) and NetLabel should be set up on a system an attacker
     could leverage this flaw.
   - CVE-2018-10902: It was found that the raw midi kernel driver did not
     protect against concurrent access which lead to a double realloc (double
     free) in snd_rawmidi_input_params() and snd_rawmidi_output_status(),
     allowing a malicious local attacker to use this for privilege escalation
     (bsc#1105323).

Patch Instructions:

   To install this SUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Module for Live Patching 15:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2073=1 SUSE-SLE-Module-Live-Patching-15-2018-2074=1

Package List:

   - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):

      kernel-livepatch-4_12_14-23-default-4-10.2
      kernel-livepatch-4_12_14-23-default-debuginfo-4-10.2
      kernel-livepatch-4_12_14-25_3-default-4-2.1
      kernel-livepatch-4_12_14-25_3-default-debuginfo-4-2.1
      kernel-livepatch-SLE15_Update_0-debugsource-4-10.2

References:

   https://www.suse.com/security/cve/CVE-2018-10902.html
   https://www.suse.com/security/cve/CVE-2018-10938.html
   https://bugzilla.suse.com/1105323
   https://bugzilla.suse.com/1106191

- ---

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 3 for SLE 15)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:2935-1
Rating:             important
References:         #1097108 #1103203 #1105026 #1106191 
Cross-References:   CVE-2018-10853 CVE-2018-10938 CVE-2018-15471
                   
Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15
______________________________________________________________________________

   An update that solves three vulnerabilities and has one
   errata is now available.

Description:

   This update for the Linux Kernel 4.12.14-25_13 fixes several issues.

   The following security issues were fixed:

   - CVE-2018-10938: It was found that a crafted network packet sent remotely
     by an attacker may force the kernel to enter an infinite loop in the
     cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a
     denial-of-service. A certain non-default configuration of LSM (Linux
     Security Module) and NetLabel should be set up on a system an attacker
     could leverage this flaw (bsc#1106191).
   - CVE-2018-15471: It was found that the netback driver allowed frontends
     to control mapping of requests to request queues. When processing a
     request to set or change this mapping, some input validation (e.g., for
     an integer overflow) was missing or flawed, leading to OOB access in
     hash handling. A malicious or buggy frontend may caused the (usually
     privileged) backend to make out of bounds memory accesses, potentially
     resulting in one or more of privilege escalation, Denial of Service
     (DoS), or information leaks (bsc#1105026).
   - CVE-2018-10853: It was found that the KVM hypervisor emulated
     instructions did not check current privilege(CPL) level while emulating
     unprivileged instructions. An unprivileged guest user/process could use
     this flaw to potentially escalate privileges inside guest (bsc#1097108).

Patch Instructions:

   To install this SUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Module for Live Patching 15:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2076=1

Package List:

   - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):

      kernel-livepatch-4_12_14-25_13-default-3-2.3
      kernel-livepatch-4_12_14-25_13-default-debuginfo-3-2.3

References:

   https://www.suse.com/security/cve/CVE-2018-10853.html
   https://www.suse.com/security/cve/CVE-2018-10938.html
   https://www.suse.com/security/cve/CVE-2018-15471.html
   https://bugzilla.suse.com/1097108
   https://bugzilla.suse.com/1103203
   https://bugzilla.suse.com/1105026
   https://bugzilla.suse.com/1106191

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