Signal is active with 2 mentions in latest observed window
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NVD 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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
A severe vulnerability was disclosed for Linux Kernel (CVE-2026-80921) https://vuldb.com/vuln/401823
Post summary
A new severe vulnerability (CVE‑2026‑80921) affecting the Linux Kernel has been disclosed, with a link to the VULDB record, but no additional technical or exploitation details are provided.
CVE-2026-80921 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 (c… https://www.cve.org/CVERecord?id=CVE-2026-80921
Post summary
The entry briefly notes that CVE‑2026‑80921, a kernel issue involving stale crypto bits in KVM on s390, has been fixed, but provides no PoC, exploit, or patch details.