---
cve: "CVE-2026-80709"
severity: "LOW"
cvss: 3.1
epss: "3.6%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-08-28 08:16:56"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T00:55:44+02:00"
---

# CVE-2026-80709

> 3.1 LOW

## Beschreibung

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.

## Patch verfügbar (OSV)

- Kernel ≥ 6.1.183
- Kernel ≥ 6.6.151
- Kernel ≥ 6.12.103
- Kernel ≥ 6.18.44
- Kernel ≥ 7.1.8

## Referenzen

- <https://git.kernel.org/stable/c/4589f742718d0256ea6dd1f5a78be6e689bdb8aa>
- <https://git.kernel.org/stable/c/b505dcc8307d64468b463dfad45a03bf865c637e>
- <https://git.kernel.org/stable/c/13e53d6ae1c3b2ff1be75b9ef09be26f4ec3ce15>
- <https://git.kernel.org/stable/c/672b12940e3f1336dfed5287412a71500adf2a76>
- <https://git.kernel.org/stable/c/1223477ca88e2396eca440919d0ca8754df79bd5>
- <https://git.kernel.org/stable/c/983279d7f86ade73db86f886e09172dd567031b5>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-80709) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_