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SUSE: 2022:0939-1 Critical Security Update for Xen BHB Attack Mitigation

suse
Calendar Grey March 23, 2022
Dist Suse Esm H88
Significant SUSE upgrade for xen has been released addressing three major vulnerabilities connected to transient execution threats.
An update that fixes three vulnerabilities is now available

Summary

This update for xen fixes the following issues: Transient execution side-channel attacks attacking the Branch History Buffer (BHB), named "Branch Target Injection" and "Intra-Mode Branch History Injection" are now mitigated. - CVE-2022-0001, CVE-2022-0002, CVE-2021-26401: BHB speculation issues (bsc#1196915).

Topics%20covered

Topics Covered

security advisory critical important SUSE xen transient execution Branch Target Injection

References

#1196915

Cross- CVE-2021-26401 CVE-2022-0001 CVE-2022-0002

CVSS scores:

CVE-2021-26401 (NVD) : 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE-2021-26401 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE-2022-0001 (NVD) : 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE-2022-0001 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE-2022-0002 (NVD) : 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE-2022-0002 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected Products:

SUSE Linux Enterprise Server 12-SP5

SUSE Linux Enterprise Server for SAP Applications 12-SP5

SUSE Linux Enterprise Software Development Kit 12-SP5

https://www.suse.com/security/cve/CVE-2021-26401.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2022:0939-1
Rating: important

Topics%20covered

Topics Covered

security advisory critical important SUSE xen transient execution Branch Target Injection

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