QID 751085

Date Published: 2021-09-07

QID 751085: SUSE Enterprise Linux Security Update for xen (SUSE-SU-2021:2943-1)

This update for xen fixes the following issues: - cve-2021-28698: long running loops in grant table handling (xsa-380)(bsc#1189378).
- cve-2021-28692: xen: inappropriate x86 iommu timeout detection / handling (bsc#1186429).
- cve-2021-0089: xen: speculative code store bypass (bsc#1186433).
- cve-2021-28699: inadequate grant-v2 status frames array bounds check (xsa-382)(bsc#1189380).
- cve-2021-28694,cve-2021-28695,cve-2021-28696: iommu page mapping issues on x86 (xsa-378)(bsc#1189373).
- cve-2021-28697: grant table v2 status pages may remain accessible after de-allocation (xsa-379)(bsc#1189376).
- cve-2021-28690: xen: x86: tsx async abort protections not restored after s3 (bsc#1186434).
- prevent superpage allocation in the lapic and acpi_info range (bsc#1189882).

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation allows attacker to compromise the system.

CVSS V3 rated as High - 7.8 severity.

CVSS V2 rated as Medium - 5.6 severity.

Solution

Upgrade to the latest package which contains the patch. To install this SUSE Security, Update use YaST online_update. Alternatively you can run the command listed for your product. To install packages using the command line interface, use command "yum update". Refer to Suse security advisory: SUSE-SU-2021:2943-1 to address this issue and obtain further details.

Vendor References

SUSE-SU-2021:2943-1 - lists.suse.com/pipermail/sle-security-updates/2021-September/009400.html

CVEs related to QID 751085

CVE-2021-28699 | CVE-2021-28698 | CVE-2021-0089 | CVE-2021-28695 | CVE-2021-28696 | CVE-2021-28694 | CVE-2021-28697 | CVE-2021-28690 | CVE-2021-28692 |

Software Advisories

Advisory ID	Software	Component	Link
SUSE-SU-2021:2943-1	SUSE Enterprise Linux		lists.suse.com/pipermail/sle-security-updates/2021-September/009400.html

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