CVE-2026-80921 - KVM: s390: vsie: zero stale crypto bits

CVE-2026-80921 - KVM: s390: vsie: zero stale crypto bits

https://cvefeed.io/rssfeed/latest.atom / Wed, 09/09/2026 - 19:31
CVE ID :CVE-2026-80921
Published : Sept. 9, 2026, 4:19 p.m. | 46 minutes ago
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.
Severity: 0.0 | NA
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