s390/zcrypt: Close speculative mem read possibility
In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Close speculative mem read possibility The domain value is extracted from a given CCA or EP11 ioctl struct when a CPRB is about to be sent. Thus this is a user controlled value. Under some special conditions (custom device node used, administrative load) this value is used as an array index after bounds checking, but without speculation barrier. Add the missing array_index_nospec() call to prevent speculative execution where this domain value is used.
CVE-2026-74466
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-2026-74466
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": "dd1a334523ba533cba63caf593a7329d8e0e5e6e",
"versionType": "git"
},
{
"status": "affected",
"version": "cfd68b33094e1a92249850ff3c3c92ae9112a541",
"lessThan": "d11a260bd7dfc6f6ccd43e1b930050f24e70cd5f",
"versionType": "git"
},
{
"status": "affected",
"version": "cfd68b33094e1a92249850ff3c3c92ae9112a541",
"lessThan": "59adeedebf02aa1c203de1d2b67ec45bfab7a3c6",
"versionType": "git"
},
{
"status": "affected",
"version": "cfd68b33094e1a92249850ff3c3c92ae9112a541",
"lessThan": "82b62eda68abfb7a33ac40f24b8c4128c2891148",
"versionType": "git"
},
{
"status": "affected",
"version": "cfd68b33094e1a92249850ff3c3c92ae9112a541",
"lessThan": "e935cd525af4c6ed2e2c6404aa27ca19c7f39ddb",
"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": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"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-2026-74466
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46563 · Revision 1
- Added to Heist Feed
- Publisher date