---
id: CVE-2023-54046
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  crypto: essiv - Handle EBUSY correctly

  As it is essiv only handles the special return value of EINPROGERSS,
  which means that in all other cases it will free data relat…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  crypto: essiv - Handle EBUSY correctly

  As it is essiv only handles the special return value of EINPROGERSS,
  which means that in all other cases it will free data relat…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= be1eb7f78aa8fbe34779c56c266ccd0364604e71 <
    c61e7d182ee3f3f5ecf18a2964e303d49c539b52
  - >-
    Linux >= be1eb7f78aa8fbe34779c56c266ccd0364604e71 <
    796e02cca30a67322161f0745e5ce994bbe75605
  - >-
    Linux >= be1eb7f78aa8fbe34779c56c266ccd0364604e71 <
    840a1d3b77c1b062bd62b4733969a5b1efc274ce
  - >-
    Linux >= be1eb7f78aa8fbe34779c56c266ccd0364604e71 <
    a006aa3eedb8bfd6fe317c3cfe9c86ffe76b2385
  - >-
    Linux >= be1eb7f78aa8fbe34779c56c266ccd0364604e71 <
    69c67d451fc19d88e54f7d97e8e7c093e08357e1
  - >-
    Linux >= be1eb7f78aa8fbe34779c56c266ccd0364604e71 <
    b5a772adf45a32c68bef28e60621f12617161556
  - Linux 5.4
published: '2025-12-24'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:17:51.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-54046'
references:
  - url: 'https://git.kernel.org/stable/c/69c67d451fc19d88e54f7d97e8e7c093e08357e1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/796e02cca30a67322161f0745e5ce994bbe75605'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/840a1d3b77c1b062bd62b4733969a5b1efc274ce'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a006aa3eedb8bfd6fe317c3cfe9c86ffe76b2385'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b5a772adf45a32c68bef28e60621f12617161556'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c61e7d182ee3f3f5ecf18a2964e303d49c539b52'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00196
epssPercentile: 0.09269
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T21:38:04.568323Z'
ingestedAt: '2026-10-15T22:48:25.426Z'
---

## Overview

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

crypto: essiv - Handle EBUSY correctly

As it is essiv only handles the special return value of EINPROGERSS,
which means that in all other cases it will free data related to the
request.

However, as the caller of essiv may specify MAY_BACKLOG, we also need
to expect EBUSY and treat it in the same way.  Otherwise backlogged
requests will trigger a use-after-free.

## Remediation

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