Security update for the Linux Kernel (Live Patch 39 for SLE 12 SP3) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2021:2026-1 Final 1 1 2021-06-18T09:40:42Z current 2021-06-18T09:40:42Z 2021-06-18T09:40:42Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 39 for SLE 12 SP3) This update for the Linux Kernel 4.4.180-94_144 fixes several issues. The following issues were fixed: - CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This could lead to writing an arbitrary values (bsc#1186111). - CVE-2021-28688: Fixed an issue introduced by XSA-365, leaving around zombie domains after xen guest has died (bsc#1183646). - CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with system execution privileges needed. (bsc#1176724). - Fixed a regression with the last livepatch which caused a kernel warning during sysfs read (bsc#1186235). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2021-2026,SUSE-SLE-SAP-12-SP3-2021-2026,SUSE-SLE-SERVER-12-SP3-2021-2026 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2021/suse-su-20212026-1/ Link for SUSE-SU-2021:2026-1 https://lists.suse.com/pipermail/sle-security-updates/2021-June/009045.html E-Mail link for SUSE-SU-2021:2026-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1176931 SUSE Bug 1176931 https://bugzilla.suse.com/1182294 SUSE Bug 1182294 https://bugzilla.suse.com/1186235 SUSE Bug 1186235 https://bugzilla.suse.com/1186285 SUSE Bug 1186285 https://www.suse.com/security/cve/CVE-2020-0429/ SUSE CVE CVE-2020-0429 page https://www.suse.com/security/cve/CVE-2021-28688/ SUSE CVE CVE-2021-28688 page https://www.suse.com/security/cve/CVE-2021-33034/ SUSE CVE CVE-2021-33034 page SUSE Linux Enterprise Server 12 SP3-LTSS SUSE Linux Enterprise Server for SAP Applications 12 SP3 kgraft-patch-4_4_180-94_144-default-2-2.1 kgraft-patch-4_4_180-94_144-default-2-2.1 as a component of SUSE Linux Enterprise Server 12 SP3-LTSS kgraft-patch-4_4_180-94_144-default-2-2.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP3 In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-152735806 CVE-2020-0429 SUSE Linux Enterprise Server 12 SP3-LTSS:kgraft-patch-4_4_180-94_144-default-2-2.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:kgraft-patch-4_4_180-94_144-default-2-2.1 important 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2021/suse-su-20212026-1/ https://www.suse.com/security/cve/CVE-2020-0429.html CVE-2020-0429 https://bugzilla.suse.com/1176724 SUSE Bug 1176724 https://bugzilla.suse.com/1176931 SUSE Bug 1176931 https://bugzilla.suse.com/1188026 SUSE Bug 1188026 The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. All Linux versions having the fix for XSA-365 applied are vulnerable. XSA-365 was classified to affect versions back to at least 3.11. CVE-2021-28688 SUSE Linux Enterprise Server 12 SP3-LTSS:kgraft-patch-4_4_180-94_144-default-2-2.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:kgraft-patch-4_4_180-94_144-default-2-2.1 moderate 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2021/suse-su-20212026-1/ https://www.suse.com/security/cve/CVE-2021-28688.html CVE-2021-28688 https://bugzilla.suse.com/1183646 SUSE Bug 1183646 In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value. CVE-2021-33034 SUSE Linux Enterprise Server 12 SP3-LTSS:kgraft-patch-4_4_180-94_144-default-2-2.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:kgraft-patch-4_4_180-94_144-default-2-2.1 important 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2021/suse-su-20212026-1/ https://www.suse.com/security/cve/CVE-2021-33034.html CVE-2021-33034 https://bugzilla.suse.com/1186111 SUSE Bug 1186111 https://bugzilla.suse.com/1186285 SUSE Bug 1186285