---
id: CVE-2024-56690
title: >-
  crypto: pcrypt - Call crypto layer directly when padata_do_parallel() return
  -EBUSY
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  crypto: pcrypt - Call crypto layer directly when padata_do_parallel() return
  -EBUSY


  Since commit 8f4f68e788c3 ("crypto: pcrypt - Fix hungtask for

  PADATA_RESET"), the p…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 039fec48e062504f14845124a1a25eb199b2ddc0 <
    dd8bf8eb5beba1e7c3b11a9a5a58ccbf345a69e6
  - >-
    Linux >= c9c1334697301c10e6918d747ed38abfbc0c96e7 <
    fca8aed12218f96b38e374ff264d78ea1fbd23cc
  - >-
    Linux >= e97bf4ada7dddacd184c3e196bd063b0dc71b41d <
    a92ccd3618e42333ac6f150ecdac14dca298bc7a
  - >-
    Linux >= 546c1796ad1ed0d87dab3c4b5156d75819be2316 <
    96001f52ae8c70e2c736d3e1e5dc53d5b521e5ca
  - >-
    Linux >= c55fc098fd9d2dca475b82d00ffbcaf97879d77e <
    92834692a539b5b7f409e467a14667d64713b732
  - >-
    Linux >= 372636debe852913529b1716f44addd94fff2d28 <
    5edae7a9a35606017ee6e05911c290acee9fee5a
  - >-
    Linux >= 8f4f68e788c3a7a696546291258bfa5fdb215523 <
    a8e0074ffb38c9a5964a221bb998034d016c93a2
  - >-
    Linux >= 8f4f68e788c3a7a696546291258bfa5fdb215523 <
    7ddab756f2de5b7b43c122ebebdf37f400fb2b6f
  - >-
    Linux >= 8f4f68e788c3a7a696546291258bfa5fdb215523 <
    662f2f13e66d3883b9238b0b96b17886179e60e2
  - Linux fb2d3a50a8f29a3c66682bb426144f40e32ab818
  - Linux e134f3aba98e6c801a693f540912c2d493718ddf
  - Linux >= 4.19.300 < 4.19.325
  - Linux >= 5.4.262 < 5.4.287
  - Linux >= 5.10.202 < 5.10.231
  - Linux >= 5.15.140 < 5.15.174
  - Linux >= 6.1.64 < 6.1.120
  - Linux >= 6.6.3 < 6.6.64
  - Linux >= 4.14.331 < 4.15
  - Linux >= 6.5.13 < 6.6
  - Linux 6.7
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:29:49.886470Z'
published: '2024-12-28'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:31:25.860Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-56690'
references:
  - url: 'https://git.kernel.org/stable/c/dd8bf8eb5beba1e7c3b11a9a5a58ccbf345a69e6'
  - url: 'https://git.kernel.org/stable/c/fca8aed12218f96b38e374ff264d78ea1fbd23cc'
  - url: 'https://git.kernel.org/stable/c/a92ccd3618e42333ac6f150ecdac14dca298bc7a'
  - url: 'https://git.kernel.org/stable/c/96001f52ae8c70e2c736d3e1e5dc53d5b521e5ca'
  - url: 'https://git.kernel.org/stable/c/92834692a539b5b7f409e467a14667d64713b732'
  - url: 'https://git.kernel.org/stable/c/5edae7a9a35606017ee6e05911c290acee9fee5a'
  - url: 'https://git.kernel.org/stable/c/a8e0074ffb38c9a5964a221bb998034d016c93a2'
  - url: 'https://git.kernel.org/stable/c/7ddab756f2de5b7b43c122ebebdf37f400fb2b6f'
  - url: 'https://git.kernel.org/stable/c/662f2f13e66d3883b9238b0b96b17886179e60e2'
tags:
  - cve.org
epss: 0.00189
epssPercentile: 0.08532
ingestedAt: '2026-11-05T22:38:31.837Z'
---

## Overview

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

crypto: pcrypt - Call crypto layer directly when padata_do_parallel() return -EBUSY

Since commit 8f4f68e788c3 ("crypto: pcrypt - Fix hungtask for
PADATA_RESET"), the pcrypt encryption and decryption operations return
-EAGAIN when the CPU goes online or offline. In alg_test(), a WARN is
generated when pcrypt_aead_decrypt() or pcrypt_aead_encrypt() returns
-EAGAIN, the unnecessary panic will occur when panic_on_warn set 1.
Fix this issue by calling crypto layer directly without parallelization
in that case.

## Affected

- `Linux >= 039fec48e062504f14845124a1a25eb199b2ddc0 < dd8bf8eb5beba1e7c3b11a9a5a58ccbf345a69e6`
- `Linux >= c9c1334697301c10e6918d747ed38abfbc0c96e7 < fca8aed12218f96b38e374ff264d78ea1fbd23cc`
- `Linux >= e97bf4ada7dddacd184c3e196bd063b0dc71b41d < a92ccd3618e42333ac6f150ecdac14dca298bc7a`
- `Linux >= 546c1796ad1ed0d87dab3c4b5156d75819be2316 < 96001f52ae8c70e2c736d3e1e5dc53d5b521e5ca`
- `Linux >= c55fc098fd9d2dca475b82d00ffbcaf97879d77e < 92834692a539b5b7f409e467a14667d64713b732`
- `Linux >= 372636debe852913529b1716f44addd94fff2d28 < 5edae7a9a35606017ee6e05911c290acee9fee5a`
- `Linux >= 8f4f68e788c3a7a696546291258bfa5fdb215523 < a8e0074ffb38c9a5964a221bb998034d016c93a2`
- `Linux >= 8f4f68e788c3a7a696546291258bfa5fdb215523 < 7ddab756f2de5b7b43c122ebebdf37f400fb2b6f`
- `Linux >= 8f4f68e788c3a7a696546291258bfa5fdb215523 < 662f2f13e66d3883b9238b0b96b17886179e60e2`
- `Linux fb2d3a50a8f29a3c66682bb426144f40e32ab818`
- `Linux e134f3aba98e6c801a693f540912c2d493718ddf`
- `Linux >= 4.19.300 < 4.19.325`
- `Linux >= 5.4.262 < 5.4.287`
- `Linux >= 5.10.202 < 5.10.231`
- `Linux >= 5.15.140 < 5.15.174`
- `Linux >= 6.1.64 < 6.1.120`
- `Linux >= 6.6.3 < 6.6.64`
- `Linux >= 4.14.331 < 4.15`
- `Linux >= 6.5.13 < 6.6`
- `Linux 6.7`

## Remediation

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