QID 751087

Date Published: 2021-09-07

QID 751087: SUSE Enterprise Linux Security Update for xen (SUSE-SU-2021:2955-1)

This update for xen fixes the following issues: security issues fixed: - cve-2021-28698: long running loops in grant table handling (xsa-380)(bsc#1189378).
- cve-2021-28697: grant table v2 status pages may remain accessible after de-allocation (xsa-379)(bsc#1189376).
- cve-2021-28694,cve-2021-28695,cve-2021-28696: iommu page mapping issues on x86 (xsa-378)(bsc#1189373).
- cve-2021-28699: inadequate grant-v2 status frames array bounds check (xsa-382)(bsc#1189380).
- cve-2021-28692: xen: inappropriate x86 iommu timeout detection / handling (bsc#1186429) - cve-2021-28690: xen: x86: tsx async abort protections not restored after s3 (bsc#1186434) - cve-2021-0089: xen: speculative code store bypass (bsc#1186433) - cve-2021-20255: fixed stack overflow via infinite recursion in eepro100 (bsc#1182654) - cve-2021-3592: slirp: invalid pointer initialization may lead to information disclosure (bootp)(bsc#1187369).
- cve-2021-3594: slirp: invalid pointer initialization may lead to information disclosure (udp)(bsc#1187378).
- cve-2021-3595: slirp: invalid pointer initialization may lead to information disclosure (tftp)(bsc#1187376).
- cve-2021-3308: fixed irq vector leak on x86 (xsa-360)(bsc#1181254).
- 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-2021:2955-1 to address this issue and obtain further details.

Vendor References

SUSE-SU-2021:2955-1 - lists.suse.com/pipermail/sle-security-updates/2021-September/009406.html

CVEs related to QID 751087

CVE-2021-3308 | CVE-2021-28699 | CVE-2021-28698 | CVE-2021-3592 | CVE-2021-0089 | CVE-2021-20255 | CVE-2021-28695 | CVE-2021-28696 | CVE-2021-28694 | CVE-2021-28697 | CVE-2021-3594 | CVE-2021-28690 | CVE-2021-28692 | CVE-2021-3595 |

Software Advisories

Advisory ID	Software	Component	Link
SUSE-SU-2021:2955-1	SUSE Enterprise Linux		lists.suse.com/pipermail/sle-security-updates/2021-September/009406.html

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