SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:1123-1)

high Nessus Plugin ID 136075

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The SUSE Linux Enterprise 15 SP1 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-8834: KVM on Power8 processors had a conflicting use of HSTATE_HOST_R1 to store r1 state in kvmppc_hv_entry plus in kvmppc_{save,restore}_tm, leading to a stack corruption. Because of this, an attacker with the ability to run code in kernel space of a guest VM can cause the host kernel to panic (bnc#1168276).

CVE-2020-11494: An issue was discovered in slc_bump in drivers/net/can/slcan.c, which allowed attackers to read uninitialized can_frame data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIG_INIT_STACK_ALL (bnc#1168424).

CVE-2020-10942: In get_raw_socket in drivers/vhost/net.c lacks validation of an sk_family field, which might allow attackers to trigger kernel stack corruption via crafted system calls (bnc#1167629).

CVE-2020-8647: Fixed a use-after-free vulnerability in the vc_do_resize function in drivers/tty/vt/vt.c (bnc#1162929).

CVE-2020-8649: Fixed a use-after-free vulnerability in the vgacon_invert_region function in drivers/video/console/vgacon.c (bnc#1162931).

CVE-2020-9383: Fixed an issue in set_fdc in drivers/block/floppy.c, which leads to a wait_til_ready out-of-bounds read (bnc#1165111).

CVE-2019-9458: In the video driver there was a use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed (bnc#1168295).

CVE-2019-3701: Fixed an issue in can_can_gw_rcv, which could cause a system crash (bnc#1120386).

CVE-2019-19768: Fixed a use-after-free in the __blk_add_trace function in kernel/trace/blktrace.c (bnc#1159285).

CVE-2019-19770: Fixed a use-after-free in the debugfs_remove function (bsc#1159198).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

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 Realtime 15-SP1:zypper in -t patch SUSE-SLE-Module-RT-15-SP1-2020-1123=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1:zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2020-1123=1

Plugin Details

Severity: High

ID: 136075

File Name: suse_SU-2020-1123-1.nasl

Version: 1.4

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 4/29/2020

Updated: 3/14/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2019-19770

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:reiserfs-kmp-rt_debug, p-cpe:/a:novell:suse_linux:kernel-rt-devel, p-cpe:/a:novell:suse_linux:cluster-md-kmp-rt_debug-debuginfo, p-cpe:/a:novell:suse_linux:kernel-rt-livepatch-devel, p-cpe:/a:novell:suse_linux:kernel-rt_debug-debuginfo, p-cpe:/a:novell:suse_linux:kselftests-kmp-rt_debug, p-cpe:/a:novell:suse_linux:reiserfs-kmp-rt_debug-debuginfo, p-cpe:/a:novell:suse_linux:dlm-kmp-rt_debug-debuginfo, p-cpe:/a:novell:suse_linux:dlm-kmp-rt-debuginfo, p-cpe:/a:novell:suse_linux:kernel-rt-extra, p-cpe:/a:novell:suse_linux:kernel-rt_debug-base-debuginfo, p-cpe:/a:novell:suse_linux:cluster-md-kmp-rt-debuginfo, p-cpe:/a:novell:suse_linux:gfs2-kmp-rt-debuginfo, p-cpe:/a:novell:suse_linux:ocfs2-kmp-rt_debug-debuginfo, p-cpe:/a:novell:suse_linux:kernel-rt-base, p-cpe:/a:novell:suse_linux:kernel-rt_debug-extra-debuginfo, p-cpe:/a:novell:suse_linux:kselftests-kmp-rt, p-cpe:/a:novell:suse_linux:kernel-syms-rt, p-cpe:/a:novell:suse_linux:kernel-rt_debug-extra, p-cpe:/a:novell:suse_linux:dlm-kmp-rt_debug, p-cpe:/a:novell:suse_linux:kernel-rt_debug, p-cpe:/a:novell:suse_linux:kernel-rt, p-cpe:/a:novell:suse_linux:kernel-rt-debugsource, p-cpe:/a:novell:suse_linux:kernel-rt_debug-devel-debuginfo, p-cpe:/a:novell:suse_linux:dlm-kmp-rt, p-cpe:/a:novell:suse_linux:ocfs2-kmp-rt, p-cpe:/a:novell:suse_linux:kernel-rt-extra-debuginfo, p-cpe:/a:novell:suse_linux:cluster-md-kmp-rt, p-cpe:/a:novell:suse_linux:reiserfs-kmp-rt-debuginfo, p-cpe:/a:novell:suse_linux:kernel-rt_debug-debugsource, p-cpe:/a:novell:suse_linux:cluster-md-kmp-rt_debug, p-cpe:/a:novell:suse_linux:reiserfs-kmp-rt, cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:kernel-rt_debug-livepatch-devel, p-cpe:/a:novell:suse_linux:ocfs2-kmp-rt_debug, p-cpe:/a:novell:suse_linux:kselftests-kmp-rt_debug-debuginfo, p-cpe:/a:novell:suse_linux:ocfs2-kmp-rt-debuginfo, p-cpe:/a:novell:suse_linux:gfs2-kmp-rt, p-cpe:/a:novell:suse_linux:kernel-rt-devel-debuginfo, p-cpe:/a:novell:suse_linux:kernel-rt-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-rt_debug-devel, p-cpe:/a:novell:suse_linux:kselftests-kmp-rt-debuginfo, p-cpe:/a:novell:suse_linux:kernel-rt_debug-base, p-cpe:/a:novell:suse_linux:gfs2-kmp-rt_debug, p-cpe:/a:novell:suse_linux:kernel-rt-debuginfo, p-cpe:/a:novell:suse_linux:gfs2-kmp-rt_debug-debuginfo

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/27/2020

Vulnerability Publication Date: 1/3/2019

Reference Information

CVE: CVE-2019-19768, CVE-2019-19770, CVE-2019-3701, CVE-2019-9458, CVE-2020-10942, CVE-2020-11494, CVE-2020-8647, CVE-2020-8649, CVE-2020-8834, CVE-2020-9383

Detections

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