Sicherheit: Mehrere Probleme in Linux

Lesezeichen hinzufügen

SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________

Announcement ID: SUSE-SU-2021:0740-1
Rating: important
References: #1065600 #1163592 #1178401 #1178762 #1179014
#1179015 #1179045 #1179082 #1179428 #1179660
#1180058 #1181747 #1181753 #1181843 #1182140
#1182175
Cross-References: CVE-2020-29368 CVE-2020-29374 CVE-2021-26930
CVE-2021-26931 CVE-2021-26932
CVSS scores:
CVE-2020-29368 (NVD) : 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2020-29368 (SUSE): 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2020-29374 (NVD) : 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2020-29374 (SUSE): 6.7
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVE-2021-26930 (NVD) : 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-26930 (SUSE): 7.8
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVE-2021-26931 (NVD) : 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE-2021-26931 (SUSE): 6.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVE-2021-26932 (NVD) : 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE-2021-26932 (SUSE): 5.9
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Affected Products:
SUSE Linux Enterprise Server for SAP 15
SUSE Linux Enterprise Server 15-LTSS
SUSE Linux Enterprise Module for Live Patching 15
SUSE Linux Enterprise High Performance Computing 15-LTSS
SUSE Linux Enterprise High Performance Computing 15-ESPOS
SUSE Linux Enterprise High Availability 15
______________________________________________________________________________

An update that solves 5 vulnerabilities and has 11 fixes is
now available.

Description:

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

The following security bugs were fixed:

- CVE-2021-26930: Fixed an improper error handling in blkback's grant
mapping (XSA-365 bsc#1181843).
- CVE-2021-26931: Fixed an issue where Linux kernel was treating grant
mapping errors as bugs (XSA-362 bsc#1181753).
- CVE-2021-26932: Fixed improper error handling issues in Linux grant
mapping (XSA-361 bsc#1181747). by remote attackers to read or write
files via directory traversal in an XCOPY request (bsc#178372).
- CVE-2020-29368,CVE-2020-29374: Fixed an issue in copy-on-write
implementation which could have granted unintended write access because
of a race condition in a THP mapcount check (bsc#1179660, bsc#1179428).

The following non-security bugs were fixed:

- kernel-{binary,source}.spec.in: do not create loop symlinks (bsc#1179082)
- kernel-source.spec: Fix build with rpm 4.16 (boo#1179015).
- rpm/kernel-binary.spec.in: avoid using barewords (bsc#1179014)
- rpm/kernel-binary.spec.in: avoid using more barewords (bsc#1179014)
%split_extra still contained two.
- rpm/kernel-binary.spec.in: Fix compressed module handling for in-tree
KMP (jsc#SLE-10886) The in-tree KMP that is built with SLE kernels have
a different scriptlet that is embedded in kernel-binary.spec.in rather
than *.sh files.
- rpm/kernel-binary.spec.in: use grep -E instead of egrep (bsc#1179045)
egrep is only a deprecated bash wrapper for "grep -E". So use the
latter
instead.
- rpm/kernel-module-subpackage: make Group tag optional (bsc#1163592)
- rpm/kernel-obs-build.spec.in: Add -q option to modprobe calls
(bsc#1178401)
- rpm/kernel-{source,binary}.spec: do not include ghost symlinks
(boo#1179082).
- rpm/mkspec: do not build kernel-obs-build on x86_32 We want to use 64bit
kernel due to various bugs (bsc#1178762 to name one).
- rpm/post.sh: Avoid purge-kernel for the first installed kernel
(bsc#1180058)
- xen/netback: avoid race in xenvif_rx_ring_slots_available()
(bsc#1065600).
- xen/netback: fix spurious event detection for common event case
(bsc#1182175).

Special Instructions and Notes:

Please reboot the system after installing this update.

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 Server for SAP 15:

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2021-740=1

- SUSE Linux Enterprise Server 15-LTSS:

zypper in -t patch SUSE-SLE-Product-SLES-15-2021-740=1

- SUSE Linux Enterprise Module for Live Patching 15:

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2021-740=1

- SUSE Linux Enterprise High Performance Computing 15-LTSS:

zypper in -t patch SUSE-SLE-Product-HPC-15-2021-740=1

- SUSE Linux Enterprise High Performance Computing 15-ESPOS:

zypper in -t patch SUSE-SLE-Product-HPC-15-2021-740=1

- SUSE Linux Enterprise High Availability 15:

zypper in -t patch SUSE-SLE-Product-HA-15-2021-740=1

Package List:

- SUSE Linux Enterprise Server for SAP 15 (ppc64le x86_64):

kernel-default-4.12.14-150.69.1
kernel-default-base-4.12.14-150.69.1
kernel-default-debuginfo-4.12.14-150.69.1
kernel-default-debugsource-4.12.14-150.69.1
kernel-default-devel-4.12.14-150.69.1
kernel-default-devel-debuginfo-4.12.14-150.69.1
kernel-obs-build-4.12.14-150.69.1
kernel-obs-build-debugsource-4.12.14-150.69.1
kernel-syms-4.12.14-150.69.1
kernel-vanilla-base-4.12.14-150.69.1
kernel-vanilla-base-debuginfo-4.12.14-150.69.1
kernel-vanilla-debuginfo-4.12.14-150.69.1
kernel-vanilla-debugsource-4.12.14-150.69.1
reiserfs-kmp-default-4.12.14-150.69.1
reiserfs-kmp-default-debuginfo-4.12.14-150.69.1

- SUSE Linux Enterprise Server for SAP 15 (noarch):

kernel-devel-4.12.14-150.69.1
kernel-docs-4.12.14-150.69.1
kernel-macros-4.12.14-150.69.1
kernel-source-4.12.14-150.69.1

- SUSE Linux Enterprise Server 15-LTSS (aarch64 s390x):

kernel-default-4.12.14-150.69.1
kernel-default-base-4.12.14-150.69.1
kernel-default-debuginfo-4.12.14-150.69.1
kernel-default-debugsource-4.12.14-150.69.1
kernel-default-devel-4.12.14-150.69.1
kernel-default-devel-debuginfo-4.12.14-150.69.1
kernel-obs-build-4.12.14-150.69.1
kernel-obs-build-debugsource-4.12.14-150.69.1
kernel-syms-4.12.14-150.69.1
kernel-vanilla-base-4.12.14-150.69.1
kernel-vanilla-base-debuginfo-4.12.14-150.69.1
kernel-vanilla-debuginfo-4.12.14-150.69.1
kernel-vanilla-debugsource-4.12.14-150.69.1
reiserfs-kmp-default-4.12.14-150.69.1
reiserfs-kmp-default-debuginfo-4.12.14-150.69.1

- SUSE Linux Enterprise Server 15-LTSS (noarch):

kernel-devel-4.12.14-150.69.1
kernel-docs-4.12.14-150.69.1
kernel-macros-4.12.14-150.69.1
kernel-source-4.12.14-150.69.1

- SUSE Linux Enterprise Server 15-LTSS (s390x):

kernel-default-man-4.12.14-150.69.1
kernel-zfcpdump-debuginfo-4.12.14-150.69.1
kernel-zfcpdump-debugsource-4.12.14-150.69.1

- SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):

kernel-default-debuginfo-4.12.14-150.69.1
kernel-default-debugsource-4.12.14-150.69.1
kernel-default-livepatch-4.12.14-150.69.1
kernel-livepatch-4_12_14-150_69-default-1-1.3.1
kernel-livepatch-4_12_14-150_69-default-debuginfo-1-1.3.1

- SUSE Linux Enterprise High Performance Computing 15-LTSS (aarch64 x86_64):

kernel-default-4.12.14-150.69.1
kernel-default-base-4.12.14-150.69.1
kernel-default-debuginfo-4.12.14-150.69.1
kernel-default-debugsource-4.12.14-150.69.1
kernel-default-devel-4.12.14-150.69.1
kernel-default-devel-debuginfo-4.12.14-150.69.1
kernel-obs-build-4.12.14-150.69.1
kernel-obs-build-debugsource-4.12.14-150.69.1
kernel-syms-4.12.14-150.69.1
kernel-vanilla-base-4.12.14-150.69.1
kernel-vanilla-base-debuginfo-4.12.14-150.69.1
kernel-vanilla-debuginfo-4.12.14-150.69.1
kernel-vanilla-debugsource-4.12.14-150.69.1

- SUSE Linux Enterprise High Performance Computing 15-LTSS (noarch):

kernel-devel-4.12.14-150.69.1
kernel-docs-4.12.14-150.69.1
kernel-macros-4.12.14-150.69.1
kernel-source-4.12.14-150.69.1

- SUSE Linux Enterprise High Performance Computing 15-ESPOS (aarch64
x86_64):

kernel-default-4.12.14-150.69.1
kernel-default-base-4.12.14-150.69.1
kernel-default-debuginfo-4.12.14-150.69.1
kernel-default-debugsource-4.12.14-150.69.1
kernel-default-devel-4.12.14-150.69.1
kernel-default-devel-debuginfo-4.12.14-150.69.1
kernel-obs-build-4.12.14-150.69.1
kernel-obs-build-debugsource-4.12.14-150.69.1
kernel-syms-4.12.14-150.69.1
kernel-vanilla-base-4.12.14-150.69.1
kernel-vanilla-base-debuginfo-4.12.14-150.69.1
kernel-vanilla-debuginfo-4.12.14-150.69.1
kernel-vanilla-debugsource-4.12.14-150.69.1

- SUSE Linux Enterprise High Performance Computing 15-ESPOS (noarch):

kernel-devel-4.12.14-150.69.1
kernel-docs-4.12.14-150.69.1
kernel-macros-4.12.14-150.69.1
kernel-source-4.12.14-150.69.1

- SUSE Linux Enterprise High Availability 15 (aarch64 ppc64le s390x x86_64):

cluster-md-kmp-default-4.12.14-150.69.1
cluster-md-kmp-default-debuginfo-4.12.14-150.69.1
dlm-kmp-default-4.12.14-150.69.1
dlm-kmp-default-debuginfo-4.12.14-150.69.1
gfs2-kmp-default-4.12.14-150.69.1
gfs2-kmp-default-debuginfo-4.12.14-150.69.1
kernel-default-debuginfo-4.12.14-150.69.1
kernel-default-debugsource-4.12.14-150.69.1
ocfs2-kmp-default-4.12.14-150.69.1
ocfs2-kmp-default-debuginfo-4.12.14-150.69.1

References:

https://www.suse.com/security/cve/CVE-2020-29368.html
https://www.suse.com/security/cve/CVE-2020-29374.html
https://www.suse.com/security/cve/CVE-2021-26930.html
https://www.suse.com/security/cve/CVE-2021-26931.html
https://www.suse.com/security/cve/CVE-2021-26932.html
https://bugzilla.suse.com/1065600
https://bugzilla.suse.com/1163592
https://bugzilla.suse.com/1178401
https://bugzilla.suse.com/1178762
https://bugzilla.suse.com/1179014
https://bugzilla.suse.com/1179015
https://bugzilla.suse.com/1179045
https://bugzilla.suse.com/1179082
https://bugzilla.suse.com/1179428
https://bugzilla.suse.com/1179660
https://bugzilla.suse.com/1180058
https://bugzilla.suse.com/1181747
https://bugzilla.suse.com/1181753
https://bugzilla.suse.com/1181843
https://bugzilla.suse.com/1182140
https://bugzilla.suse.com/1182175