CVE-2026-80709

HighCVSS 7.8/10Last modified Oct 16, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs

There is a wrong upper limit check for the domain value when an EP11 CPRB is processed for sending to a crypto card. This check is only active on custom device nodes but may lead to access heap memory behind perms->adm when an administrative CPRB is sent. Add correct limit (AP_DOMAINS = 256) checking to fix this.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
LinuxLinux>= cfd68b33094e1a92249850ff3c3c92ae9112a541, < 4589f742718d0256ea6dd1f5a78be6e689bdb8aa; >= cfd68b33094e1a92249850ff3c3c92ae9112a541, < b505dcc8307d64468b463dfad45a03bf865c637e; >= cfd68b33094e1a92249850ff3c3c92ae9112a541, < 13e53d6ae1c3b2ff1be75b9ef09be26f4ec3ce15; >= cfd68b33094e1a92249850ff3c3c92ae9112a541, < 672b12940e3f1336dfed5287412a71500adf2a76; >= cfd68b33094e1a92249850ff3c3c92ae9112a541, < 1223477ca88e2396eca440919d0ca8754df79bd5; >= cfd68b33094e1a92249850ff3c3c92ae9112a541, < 983279d7f86ade73db86f886e09172dd567031b5
LinuxLinux5.18

References

Timeline

Published
Aug 28, 2026
Last modified
Oct 16, 2026
NVD status
Received

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CVE-2026-80709: High severity, CVSS 7.8 | Vulnix