CVE-2026-80709
s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 28, 2026 |
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Affected Versions
Linux / Linux
cfd68b33094e1a92249850ff3c3c92ae9112a541 < 4589f742718d0256ea6dd1f5a78be6e689bdb8aa cfd68b33094e1a92249850ff3c3c92ae9112a541 < b505dcc8307d64468b463dfad45a03bf865c637e cfd68b33094e1a92249850ff3c3c92ae9112a541 < 13e53d6ae1c3b2ff1be75b9ef09be26f4ec3ce15 cfd68b33094e1a92249850ff3c3c92ae9112a541 < 672b12940e3f1336dfed5287412a71500adf2a76 cfd68b33094e1a92249850ff3c3c92ae9112a541 < 1223477ca88e2396eca440919d0ca8754df79bd5 cfd68b33094e1a92249850ff3c3c92ae9112a541 < 983279d7f86ade73db86f886e09172dd567031b5
Linux / Linux
5.18
References
git.kernel.org: https://git.kernel.org/stable/c/4589f742718d0256ea6dd1f5a78be6e689bdb8aa git.kernel.org: https://git.kernel.org/stable/c/b505dcc8307d64468b463dfad45a03bf865c637e git.kernel.org: https://git.kernel.org/stable/c/13e53d6ae1c3b2ff1be75b9ef09be26f4ec3ce15 git.kernel.org: https://git.kernel.org/stable/c/672b12940e3f1336dfed5287412a71500adf2a76 git.kernel.org: https://git.kernel.org/stable/c/1223477ca88e2396eca440919d0ca8754df79bd5 git.kernel.org: https://git.kernel.org/stable/c/983279d7f86ade73db86f886e09172dd567031b5