---
id: CVE-2026-97588
title: |-
  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_f…
summary: |-
  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_f…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 6cd87cb5ef6ca50ae17c371482ceaab1d635e232 <
    f6b263679aa72ad2e534bf93db55f2589549a40e
  - >-
    Linux >= 6cd87cb5ef6ca50ae17c371482ceaab1d635e232 <
    e267bd142664a181474112392aeaa8b3d4b12f2e
  - >-
    Linux >= 6cd87cb5ef6ca50ae17c371482ceaab1d635e232 <
    7a08507ea5b4d06ad8d269287913573f34467565
  - Linux 6.16
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T11:17:09.990'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97588'
references:
  - url: 'https://git.kernel.org/stable/c/7a08507ea5b4d06ad8d269287913573f34467565'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e267bd142664a181474112392aeaa8b3d4b12f2e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f6b263679aa72ad2e534bf93db55f2589549a40e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97588.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97588'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2541226'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97588'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97588'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97588.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-25T11:06:38.907Z'
epss: 0.00198
epssPercentile: 0.09466
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-393
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97588.json)