Security update for the Linux Kernel (Live Patch 7 for SLE 15 SP1) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2020:3400-1 Final 1 1 2020-11-19T11:04:09Z current 2020-11-19T11:04:09Z 2020-11-19T11:04:09Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 7 for SLE 15 SP1) This update for the Linux Kernel 4.12.14-197_26 fixes several issues. The following security issues were fixed: - CVE-2017-1000405: Fixed a bug in the THP CoW support that could have been used by local attackers to corrupt memory of other processes and cause them to crash (bsc#1178264, bsc#1069496, bsc#1070307). - CVE-2020-12351: Fixed a type confusion while processing AMP packets aka 'BleedingTooth' aka 'BadKarma' (bsc#1177724, bsc#1177729, bsc#1178397). - CVE-2020-25645: Fixed an an issue in IPsec that caused traffic between two Geneve endpoints to be unencrypted (bnc#1177513). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2020-3400,SUSE-SLE-Live-Patching-12-SP5-2020-3400,SUSE-SLE-Live-Patching-12-SP5-2020-3401,SUSE-SLE-Module-Live-Patching-15-SP1-2020-3411 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2020/suse-su-20203400-1/ Link for SUSE-SU-2020:3400-1 https://lists.suse.com/pipermail/sle-security-updates/2020-November/007802.html E-Mail link for SUSE-SU-2020:3400-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1177513 SUSE Bug 1177513 https://bugzilla.suse.com/1177729 SUSE Bug 1177729 https://bugzilla.suse.com/1178264 SUSE Bug 1178264 https://www.suse.com/security/cve/CVE-2017-1000405/ SUSE CVE CVE-2017-1000405 page https://www.suse.com/security/cve/CVE-2020-12351/ SUSE CVE CVE-2020-12351 page https://www.suse.com/security/cve/CVE-2020-25645/ SUSE CVE CVE-2020-25645 page SUSE Linux Enterprise Live Patching 12 SP5 SUSE Linux Enterprise Live Patching 15 SP1 kgraft-patch-4_12_14-122_7-default-8-2.2 kgraft-patch-4_12_14-120-default-8-21.2 kernel-livepatch-4_12_14-197_26-default-8-2.2 kgraft-patch-4_12_14-122_7-default-8-2.2 as a component of SUSE Linux Enterprise Live Patching 12 SP5 kgraft-patch-4_12_14-120-default-8-21.2 as a component of SUSE Linux Enterprise Live Patching 12 SP5 kernel-livepatch-4_12_14-197_26-default-8-2.2 as a component of SUSE Linux Enterprise Live Patching 15 SP1 The Linux Kernel versions 2.6.38 through 4.14 have a problematic use of pmd_mkdirty() in the touch_pmd() function inside the THP implementation. touch_pmd() can be reached by get_user_pages(). In such case, the pmd will become dirty. This scenario breaks the new can_follow_write_pmd()'s logic - pmd can become dirty without going through a COW cycle. This bug is not as severe as the original "Dirty cow" because an ext4 file (or any other regular file) cannot be mapped using THP. Nevertheless, it does allow us to overwrite read-only huge pages. For example, the zero huge page and sealed shmem files can be overwritten (since their mapping can be populated using THP). Note that after the first write page-fault to the zero page, it will be replaced with a new fresh (and zeroed) thp. CVE-2017-1000405 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-120-default-8-21.2 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_7-default-8-2.2 SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_26-default-8-2.2 important 3.6 AV:L/AC:L/Au:N/C:N/I:P/A:P 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/2020/suse-su-20203400-1/ https://www.suse.com/security/cve/CVE-2017-1000405.html CVE-2017-1000405 https://bugzilla.suse.com/1069496 SUSE Bug 1069496 https://bugzilla.suse.com/1070307 SUSE Bug 1070307 Improper input validation in BlueZ may allow an unauthenticated user to potentially enable escalation of privilege via adjacent access. CVE-2020-12351 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-120-default-8-21.2 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_7-default-8-2.2 SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_26-default-8-2.2 important 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/2020/suse-su-20203400-1/ https://www.suse.com/security/cve/CVE-2020-12351.html CVE-2020-12351 https://bugzilla.suse.com/1177724 SUSE Bug 1177724 https://bugzilla.suse.com/1177729 SUSE Bug 1177729 https://bugzilla.suse.com/1178397 SUSE Bug 1178397 A flaw was found in the Linux kernel in versions before 5.9-rc7. Traffic between two Geneve endpoints may be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality. CVE-2020-25645 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-120-default-8-21.2 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_7-default-8-2.2 SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_26-default-8-2.2 important 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/2020/suse-su-20203400-1/ https://www.suse.com/security/cve/CVE-2020-25645.html CVE-2020-25645 https://bugzilla.suse.com/1177511 SUSE Bug 1177511 https://bugzilla.suse.com/1177513 SUSE Bug 1177513