s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs
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.
CVE-2026-80709
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80709
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "cfd68b33094e1a92249850ff3c3c92ae9112a541",
"lessThan": "4589f742718d0256ea6dd1f5a78be6e689bdb8aa",
"versionType": "git"
},
{
"status": "affected",
"version": "cfd68b33094e1a92249850ff3c3c92ae9112a541",
"lessThan": "b505dcc8307d64468b463dfad45a03bf865c637e",
"versionType": "git"
},
{
"status": "affected",
"version": "cfd68b33094e1a92249850ff3c3c92ae9112a541",
"lessThan": "13e53d6ae1c3b2ff1be75b9ef09be26f4ec3ce15",
"versionType": "git"
},
{
"status": "affected",
"version": "cfd68b33094e1a92249850ff3c3c92ae9112a541",
"lessThan": "672b12940e3f1336dfed5287412a71500adf2a76",
"versionType": "git"
},
{
"status": "affected",
"version": "cfd68b33094e1a92249850ff3c3c92ae9112a541",
"lessThan": "1223477ca88e2396eca440919d0ca8754df79bd5",
"versionType": "git"
},
{
"status": "affected",
"version": "cfd68b33094e1a92249850ff3c3c92ae9112a541",
"lessThan": "983279d7f86ade73db86f886e09172dd567031b5",
"versionType": "git"
}
],
"programFiles": [
"drivers/s390/crypto/zcrypt_api.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.151",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.103",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.44",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/s390/crypto/zcrypt_api.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80709
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #34363 · Revision 1
- Added to Heist Feed
- Publisher date