Answer in brief
CVE-2026-74466 records a Unknown severity vulnerability in s390/zcrypt: Close speculative mem read possibility. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=cfd68b33094e1a92249850ff3c3c92ae9112a541 <82b62eda68abfb7a33ac40f24b8c4128c2891148 || >=cfd68b33094e1a92249850ff3c3c92ae9112a541 <e935cd525af4c6ed2e2c6404aa27ca19c7f39ddb | 82b62eda68abfb7a33ac40f24b8c4128c2891148, e935cd525af4c6ed2e2c6404aa27ca19c7f39ddb |
| Linux/Linuxgeneric | 5.18 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-74466 records a Unknown severity vulnerability in s390/zcrypt: Close speculative mem read possibility. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=cfd68b33094e1a92249850ff3c3c92ae9112a541 <82b62eda68abfb7a33ac40f24b8c4128c2891148 || >=cfd68b33094e1a92249850ff3c3c92ae9112a541 <e935cd525af4c6ed2e2c6404aa27ca19c7f39ddb | 82b62eda68abfb7a33ac40f24b8c4128c2891148, e935cd525af4c6ed2e2c6404aa27ca19c7f39ddb |
| Linux/Linuxgeneric | 5.18 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.