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AUSCERT External Security Bulletin Redistribution
ESB-2019.0984
SUSE-SU-2019:0726-1 Security update for the Linux Kernel
(Live Patch 0 for SLE 12 SP4)
26 March 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: linux kernel
Publisher: SUSE
Operating System: SUSE
Impact/Access: Root Compromise -- Existing Account
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-9213 CVE-2019-8912 CVE-2019-7221
CVE-2019-6974
Reference: ESB-2019.0927.2
ESB-2019.0914
ESB-2019.0892
ESB-2019.0675
Original Bulletin:
https://www.suse.com/support/update/announcement/2019/suse-su-20190726-1.html
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SUSE Security Update: Security update for the Linux Kernel (Live
______________________________________________________________________________
Announcement ID: SUSE-SU-2019:0726-1
Rating: important
References: #1124729 #1124734 #1126284 #1128378
Cross-References: CVE-2019-6974 CVE-2019-7221 CVE-2019-8912 CVE-2019-9213
Affected Products:
SUSE Linux Enterprise Live Patching 12-SP4
______________________________________________________________________________
Patch 0 for
SLE 12 SP4)
An update that fixes four vulnerabilities is now available.
Description:
This update for the Linux Kernel 4.12.14-94_41 fixes several issues.
The following security issues were fixed:
o CVE-2019-9213: Expand_downwards in mm/mmap.c lacked a check for the mmap
minimum address, which made it easier for attackers to exploit kernel NULL
pointer dereferences on non-SMAP platforms. This is related to a capability
check for the wrong task (bsc#1128378).
o CVE-2019-8912: af_alg_release() in crypto/af_alg.c neglected to set a NULL
value for a certain structure member, which could have led to a
use-after-free in sockfs_setattr (bsc#1126284).
o CVE-2019-7221: Fixed a user-after-free vulnerability in the KVM hypervisor
related to the emulation of a preemption timer, allowing an guest user/
process to crash the host kernel. (bsc#1124734).
o CVE-2019-6974: kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandled
reference counting because of a race condition, leading to a use-after-free
(bsc#1124729).
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:
o SUSE Linux Enterprise Live Patching 12-SP4:
zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2019-726=1
SUSE-SLE-Live-Patching-12-SP4-2019-727=1
SUSE-SLE-Live-Patching-12-SP4-2019-728=1
Package List:
o SUSE Linux Enterprise Live Patching 12-SP4 (ppc64le x86_64):
kgraft-patch-4_12_14-94_41-default-4-2.10.2
kgraft-patch-4_12_14-94_41-default-debuginfo-4-2.10.2
kgraft-patch-4_12_14-95_3-default-3-2.1
kgraft-patch-4_12_14-95_6-default-2-2.1
kgraft-patch-SLE12-SP4_Update_0-debugsource-4-2.10.2
References:
o https://www.suse.com/security/cve/CVE-2019-6974.html
o https://www.suse.com/security/cve/CVE-2019-7221.html
o https://www.suse.com/security/cve/CVE-2019-8912.html
o https://www.suse.com/security/cve/CVE-2019-9213.html
o https://bugzilla.suse.com/1124729
o https://bugzilla.suse.com/1124734
o https://bugzilla.suse.com/1126284
o https://bugzilla.suse.com/1128378
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===========================================================================
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