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

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/087c19cc60a8caa1a08e1e434c8be2caf6c27733 cve-icon cve-icon
https://git.kernel.org/stable/c/29b4f7bc2991313bd3e6f6fb8fdf1b173f086dd6 cve-icon cve-icon
https://git.kernel.org/stable/c/34d5b5b646c91cfb9338d7a12c955a70ffb8c66b cve-icon cve-icon
https://git.kernel.org/stable/c/59d51550b5cb916bda037673a721a404b3b47a0d cve-icon cve-icon
https://git.kernel.org/stable/c/7d23489f51109e3ebba5b5db8c5f0185af7b7fdf cve-icon cve-icon
https://git.kernel.org/stable/c/935eeba276012916c76243e5cbb843efd8fdb75d cve-icon cve-icon
https://git.kernel.org/stable/c/d110b3297f11ef227098b8a82ade2d5f123b7d2f cve-icon cve-icon
https://git.kernel.org/stable/c/d4bcd2df6d0d2af916b4fe1a533958778ea7c45b cve-icon cve-icon
https://git.kernel.org/stable/c/f6079dca67eccb5eabef9f72437948c66dc5131f cve-icon cve-icon
History

Wed, 09 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title KVM: s390: vsie: zero stale crypto bits
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-09T16:19:42.335Z

Reserved: 2026-08-26T14:34:25.801Z

Link: CVE-2026-80921

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-09T17:17:47.240

Modified: 2026-09-09T17:17:47.240

Link: CVE-2026-80921

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.