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VULNERABILITIES

CVE-2026-80921 Details

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: zero stale crypto bits When shadowing crypto access bits from a format0 apcb (crycb 0 or 1), the bits 64..255 are unchanged from whatever is in the vsie page in the crycb and thus in the apcb. This gives a nested guest potential access to a device no longer available. Zero out the remaining bits.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:8.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://git.kernel.org/stable/c/087c19cc60a8caa1a08e1e434c8be2caf6c27733 kernel.org
https://git.kernel.org/stable/c/29b4f7bc2991313bd3e6f6fb8fdf1b173f086dd6 kernel.org
https://git.kernel.org/stable/c/34d5b5b646c91cfb9338d7a12c955a70ffb8c66b kernel.org
https://git.kernel.org/stable/c/59d51550b5cb916bda037673a721a404b3b47a0d kernel.org
https://git.kernel.org/stable/c/7d23489f51109e3ebba5b5db8c5f0185af7b7fdf kernel.org

see all 9 references

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-80921
NVD Published Date:
Sep 9, 2026
NVD Last Modified:
Sep 10, 2026
Source:
kernel.org
CVE-2026-80921 Details - Not Deferred