---
id: CVE-2026-97591
title: >-
  In the Linux kernel, the following vulnerability has been resolved:


  s390/crypto: Fix handling of EBUSY in PHMAC when req is pushed to crypto
  engine


  When a request is transferred to the engine via

  crypto_transfer_hash_request_to_engine(…
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  s390/crypto: Fix handling of EBUSY in PHMAC when req is pushed to crypto
  engine


  When a request is transferred to the engine via

  crypto_transfer_hash_request_to_engine(…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= cbbc675506cc4cd93e6f895e7c1f693156f9a95c <
    203702f0013f9b7324e8c5facb6cd6e9c0942b13
  - >-
    Linux >= cbbc675506cc4cd93e6f895e7c1f693156f9a95c <
    bcd7f1f1e2f2882ad206f72425255be105178151
  - >-
    Linux >= cbbc675506cc4cd93e6f895e7c1f693156f9a95c <
    330148371401de474b656eaf521861f12ec1a1ce
  - Linux 6.17
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T11:17:10.313'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97591'
references:
  - url: 'https://git.kernel.org/stable/c/203702f0013f9b7324e8c5facb6cd6e9c0942b13'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/330148371401de474b656eaf521861f12ec1a1ce'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bcd7f1f1e2f2882ad206f72425255be105178151'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-25T11:06:38.905Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

s390/crypto: Fix handling of EBUSY in PHMAC when req is pushed to crypto engine

When a request is transferred to the engine via
crypto_transfer_hash_request_to_engine() there are two return codes
signaling a successful transfer: EINPROGRESS and EBUSY. However the
correct handling of EBUSY was missing and has been added as a return
code indicating a successful transfer to the crypto engine.

## Remediation

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