Test ID:	1.3.6.1.4.1.25623.1.0.844383
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-4318-1)
Summary:	The remote host is missing an update for the 'linux, linux-hwe' package(s) announced via the USN-4318-1 advisory.
Description:	Summary: The remote host is missing an update for the 'linux, linux-hwe' package(s) announced via the USN-4318-1 advisory. Vulnerability Insight: Al Viro discovered that the vfs layer in the Linux kernel contained a use- after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-8428) Gustavo Romero and Paul Mackerras discovered that the KVM implementation in the Linux kernel for PowerPC processors did not properly keep guest state separate from host state. A local attacker in a KVM guest could use this to cause a denial of service (host system crash). (CVE-2020-8834) Shijie Luo discovered that the ext4 file system implementation in the Linux kernel did not properly check for a too-large journal size. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (soft lockup). (CVE-2020-8992) Affected Software/OS: 'linux, linux-hwe' package(s) on Ubuntu 16.04, Ubuntu 18.04. Solution: Please install the updated package(s). CVSS Score: 4.9 CVSS Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2020-8428 Debian Security Information: DSA-4667 (Google Search) https://www.debian.org/security/2020/dsa-4667 Debian Security Information: DSA-4698 (Google Search) https://www.debian.org/security/2020/dsa-4698 http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6 https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6 https://www.openwall.com/lists/oss-security/2020/01/28/2 https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html http://www.openwall.com/lists/oss-security/2020/01/28/4 http://www.openwall.com/lists/oss-security/2020/02/02/1 SuSE Security Announcement: openSUSE-SU-2020:0336 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html https://usn.ubuntu.com/4318-1/ https://usn.ubuntu.com/4319-1/ https://usn.ubuntu.com/4320-1/ https://usn.ubuntu.com/4324-1/ https://usn.ubuntu.com/4325-1/ Common Vulnerability Exposure (CVE) ID: CVE-2020-8834 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1867717 https://usn.ubuntu.com/usn/usn-4318-1 https://www.openwall.com/lists/oss-security/2020/04/06/2 SuSE Security Announcement: openSUSE-SU-2020:0543 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html Common Vulnerability Exposure (CVE) ID: CVE-2020-8992 https://patchwork.ozlabs.org/patch/1236118/ https://usn.ubuntu.com/4342-1/ https://usn.ubuntu.com/4344-1/ https://usn.ubuntu.com/4419-1/
Copyright	Copyright (C) 2020 Greenbone AG

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