s390/crypto: Map EBUSY to EIO when key conversion fails repeatedly (CVE-2026-97588) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97588

s390/crypto: Map EBUSY to EIO when key conversion fails repeatedly

Answer in brief

CVE-2026-97588 records a Unknown severity vulnerability in s390/crypto: Map EBUSY to EIO when key conversion fails repeatedly. 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.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

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.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=6cd87cb5ef6ca50ae17c371482ceaab1d635e232 <f6b263679aa72ad2e534bf93db55f2589549a40e \|\| >=6cd87cb5ef6ca50ae17c371482ceaab1d635e232 <e267bd142664a181474112392aeaa8b3d4b12f2e \|\| >=6cd87cb5ef6ca50ae17c371482ceaab1d635e232 <7a08507ea5b4d06ad8d269287913573f34467565	f6b263679aa72ad2e534bf93db55f2589549a40e, e267bd142664a181474112392aeaa8b3d4b12f2e, 7a08507ea5b4d06ad8d269287913573f34467565
Linux/Linuxgeneric	6.16	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to f6b263679aa72ad2e534bf93db55f2589549a40e if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: s390/crypto: Map EBUSY to EIO when key conversion fails repeatedly When hardware persistently returns -EBUSY after exhausting retries, the error propagates to crypto_finalize_*_request(). The crypto API's completion wrapper treats -EBUSY as a queueing status and swallows it, preventing the completion callback from firing. This causes callers using crypto_wait_req() to block indefinitely. Translate persistent -EBUSY to -EIO after retry exhaustion to ensure proper error propagation and callback invocation.

Quoted source text, attributed separately from HOL analysis.