Security update for xen SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2021:3849-1 Final 1 1 2021-12-01T15:56:49Z current 2021-12-01T15:56:49Z 2021-12-01T15:56:49Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for xen This update for xen fixes the following issues: - CVE-2021-28701: Fixed race condition in XENMAPSPACE_grant_table handling (XSA-384) (bsc#1189632). - CVE-2021-28704, CVE-2021-28707, CVE-2021-28708: Fixed PoD operations on misaligned GFNs (XSA-388) (bsc#1192557). - CVE-2021-28705, CVE-2021-28709: Fixed issues with partially successful P2M updates on x86 (XSA-389) (bsc#1192559). - CVE-2021-28706: Fixed guests may exceed their designated memory limit (XSA-385) (bsc#1192554). - Integrate bugfixes (bsc#1189373, bsc#1189378) The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2021-3849,SUSE-OpenStack-Cloud-9-2021-3849,SUSE-OpenStack-Cloud-Crowbar-9-2021-3849,SUSE-SLE-SAP-12-SP4-2021-3849,SUSE-SLE-SERVER-12-SP4-LTSS-2021-3849 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-20213849-1/ Link for SUSE-SU-2021:3849-1 https://lists.suse.com/pipermail/sle-security-updates/2021-December/009788.html E-Mail link for SUSE-SU-2021:3849-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1189373 SUSE Bug 1189373 https://bugzilla.suse.com/1189378 SUSE Bug 1189378 https://bugzilla.suse.com/1189632 SUSE Bug 1189632 https://bugzilla.suse.com/1192554 SUSE Bug 1192554 https://bugzilla.suse.com/1192557 SUSE Bug 1192557 https://bugzilla.suse.com/1192559 SUSE Bug 1192559 https://www.suse.com/security/cve/CVE-2021-28701/ SUSE CVE CVE-2021-28701 page https://www.suse.com/security/cve/CVE-2021-28704/ SUSE CVE CVE-2021-28704 page https://www.suse.com/security/cve/CVE-2021-28705/ SUSE CVE CVE-2021-28705 page https://www.suse.com/security/cve/CVE-2021-28706/ SUSE CVE CVE-2021-28706 page https://www.suse.com/security/cve/CVE-2021-28707/ SUSE CVE CVE-2021-28707 page https://www.suse.com/security/cve/CVE-2021-28708/ SUSE CVE CVE-2021-28708 page https://www.suse.com/security/cve/CVE-2021-28709/ SUSE CVE CVE-2021-28709 page SUSE Linux Enterprise Server 12 SP4-LTSS SUSE Linux Enterprise Server for SAP Applications 12 SP4 SUSE OpenStack Cloud 9 SUSE OpenStack Cloud Crowbar 9 xen-4.11.4_24-2.65.1 xen-devel-4.11.4_24-2.65.1 xen-doc-html-4.11.4_24-2.65.1 xen-libs-4.11.4_24-2.65.1 xen-libs-32bit-4.11.4_24-2.65.1 xen-libs-64bit-4.11.4_24-2.65.1 xen-tools-4.11.4_24-2.65.1 xen-tools-domU-4.11.4_24-2.65.1 xen-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server 12 SP4-LTSS xen-doc-html-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server 12 SP4-LTSS xen-libs-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server 12 SP4-LTSS xen-libs-32bit-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server 12 SP4-LTSS xen-tools-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server 12 SP4-LTSS xen-tools-domU-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server 12 SP4-LTSS xen-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP4 xen-doc-html-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP4 xen-libs-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP4 xen-libs-32bit-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP4 xen-tools-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP4 xen-tools-domU-4.11.4_24-2.65.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP4 xen-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud 9 xen-doc-html-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud 9 xen-libs-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud 9 xen-libs-32bit-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud 9 xen-tools-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud 9 xen-tools-domU-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud 9 xen-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud Crowbar 9 xen-doc-html-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud Crowbar 9 xen-libs-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud Crowbar 9 xen-libs-32bit-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud Crowbar 9 xen-tools-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud Crowbar 9 xen-tools-domU-4.11.4_24-2.65.1 as a component of SUSE OpenStack Cloud Crowbar 9 Another race in XENMAPSPACE_grant_table handling Guests are permitted access to certain Xen-owned pages of memory. The majority of such pages remain allocated / associated with a guest for its entire lifetime. Grant table v2 status pages, however, are de-allocated when a guest switches (back) from v2 to v1. Freeing such pages requires that the hypervisor enforce that no parallel request can result in the addition of a mapping of such a page to a guest. That enforcement was missing, allowing guests to retain access to pages that were freed and perhaps re-used for other purposes. Unfortunately, when XSA-379 was being prepared, this similar issue was not noticed. CVE-2021-28701 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-domU-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-domU-4.11.4_24-2.65.1 important 4.4 AV:L/AC:M/Au:N/C:P/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/2021/suse-su-20213849-1/ https://www.suse.com/security/cve/CVE-2021-28701.html CVE-2021-28701 https://bugzilla.suse.com/1189632 SUSE Bug 1189632 PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. (Patch 1, combining the fix to both these two issues.) In addition handling of XENMEM_decrease_reservation can also trigger a host crash when the specified page order is neither 4k nor 2M nor 1G (CVE-2021-28708, patch 2). CVE-2021-28704 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-domU-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-domU-4.11.4_24-2.65.1 moderate 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C 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-20213849-1/ https://www.suse.com/security/cve/CVE-2021-28704.html CVE-2021-28704 https://bugzilla.suse.com/1192557 SUSE Bug 1192557 issues with partially successful P2M updates on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). In some cases the hypervisor carries out the requests by splitting them into smaller chunks. Error handling in certain PoD cases has been insufficient in that in particular partial success of some operations was not properly accounted for. There are two code paths affected - page removal (CVE-2021-28705) and insertion of new pages (CVE-2021-28709). (We provide one patch which combines the fix to both issues.) CVE-2021-28705 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-domU-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-domU-4.11.4_24-2.65.1 moderate 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C 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-20213849-1/ https://www.suse.com/security/cve/CVE-2021-28705.html CVE-2021-28705 https://bugzilla.suse.com/1192559 SUSE Bug 1192559 guests may exceed their designated memory limit When a guest is permitted to have close to 16TiB of memory, it may be able to issue hypercalls to increase its memory allocation beyond the administrator established limit. This is a result of a calculation done with 32-bit precision, which may overflow. It would then only be the overflowed (and hence small) number which gets compared against the established upper bound. CVE-2021-28706 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-domU-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-domU-4.11.4_24-2.65.1 moderate 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C 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-20213849-1/ https://www.suse.com/security/cve/CVE-2021-28706.html CVE-2021-28706 https://bugzilla.suse.com/1192554 SUSE Bug 1192554 PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. (Patch 1, combining the fix to both these two issues.) In addition handling of XENMEM_decrease_reservation can also trigger a host crash when the specified page order is neither 4k nor 2M nor 1G (CVE-2021-28708, patch 2). CVE-2021-28707 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-domU-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-domU-4.11.4_24-2.65.1 moderate 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C 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-20213849-1/ https://www.suse.com/security/cve/CVE-2021-28707.html CVE-2021-28707 PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. (Patch 1, combining the fix to both these two issues.) In addition handling of XENMEM_decrease_reservation can also trigger a host crash when the specified page order is neither 4k nor 2M nor 1G (CVE-2021-28708, patch 2). CVE-2021-28708 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-domU-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-domU-4.11.4_24-2.65.1 moderate 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C 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-20213849-1/ https://www.suse.com/security/cve/CVE-2021-28708.html CVE-2021-28708 issues with partially successful P2M updates on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). In some cases the hypervisor carries out the requests by splitting them into smaller chunks. Error handling in certain PoD cases has been insufficient in that in particular partial success of some operations was not properly accounted for. There are two code paths affected - page removal (CVE-2021-28705) and insertion of new pages (CVE-2021-28709). (We provide one patch which combines the fix to both issues.) CVE-2021-28709 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server 12 SP4-LTSS:xen-tools-domU-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-doc-html-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-32bit-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-libs-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-4.11.4_24-2.65.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud 9:xen-tools-domU-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-doc-html-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-32bit-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-libs-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-4.11.4_24-2.65.1 SUSE OpenStack Cloud Crowbar 9:xen-tools-domU-4.11.4_24-2.65.1 moderate 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C 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-20213849-1/ https://www.suse.com/security/cve/CVE-2021-28709.html CVE-2021-28709 https://bugzilla.suse.com/1192559 SUSE Bug 1192559