SUSE: 2019:0726-1 important: the Linux Kernel (Live Patch 0 for SLE 12 SP4)
Summary
This update for the Linux Kernel 4.12.14-94_41 fixes several issues. The following security issues were fixed: - 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). - 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). - 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). - 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: - 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: - 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
#1124729 #1124734 #1126284 #1128378
Cross- CVE-2019-6974 CVE-2019-7221 CVE-2019-8912
CVE-2019-9213
Affected Products:
SUSE Linux Enterprise Live Patching 12-SP4
https://www.suse.com/security/cve/CVE-2019-6974.html
https://www.suse.com/security/cve/CVE-2019-7221.html
https://www.suse.com/security/cve/CVE-2019-8912.html
https://www.suse.com/security/cve/CVE-2019-9213.html
https://bugzilla.suse.com/1124729
https://bugzilla.suse.com/1124734
https://bugzilla.suse.com/1126284
https://bugzilla.suse.com/1128378