SUSE: 2019:0683-1 Important: Kernel Memory Issues Addressed
suse
March 21, 2019
An update that fixes three vulnerabilities is now available
Summary
This update for the Linux Kernel 4.4.121-92_73 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-2019-7221: 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:
Topics Covered
References
#1124729 #1124734 #1128378
Cross- CVE-2019-6974 CVE-2019-7221 CVE-2019-9213
Affected Products:
SUSE Linux Enterprise Server for SAP 12-SP2
SUSE Linux Enterprise Server 12-SP2-LTSS
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-2019-9213.html
https://bugzilla.suse.com/1124729
https://bugzilla.suse.com/1124734
https://bugzilla.suse.com/1128378
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Announcement ID: SUSE-SU-2019:0683-1
Rating: important
Topics Covered
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