CVE-2022-49260

Local denial of service via subrequest pointer misuse

Published Feb 26, 2025 · Updated Aug 5, 2026

Denial of service in Linux kernel 5.14 through 5.17.1 allows local users to crash the system through Hisilicon SEC AEAD fallback. The Hisilicon SEC2 AEAD fallback path misuses the subrequest pointer for private context storage, causing an operating-system panic with 64 KiB pages. Reachability requires local low-privileged access, use of the affected crypto fallback, and a 64 KiB page configuration; the reported consequence is a system crash.

CVSS severity5.5
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux kernel 5.14 through 5.17.1 allows local users to crash the system through Hisilicon SEC AEAD fallback. The Hisilicon SEC2 AEAD fallback path misuses the subrequest pointer for private context storage, causing an operating-system panic with 64 KiB pages. Reachability requires local low-privileged access, use of the affected crypto fallback, and a 64 KiB page configuration; the reported consequence is a system crash.

The record

CVE
CVE-2022-49260
Published
Feb 26, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.14
  2. Affected versionversion=6c46a3297beae4ae2d22b26da5e091f058381c7c <0a2a464f863187f97e96ebc6384c052cafd4a54c
  3. Affected versionversion=6c46a3297beae4ae2d22b26da5e091f058381c7c <40dba7c26e897c637e91312b35f664f1d4d0073c
  4. Affected versionversion=6c46a3297beae4ae2d22b26da5e091f058381c7c <5c1149e2abe0b7489300736b8277b45b113de67f
  5. Affected versionversion=6c46a3297beae4ae2d22b26da5e091f058381c7c <ef7b10f3cac7810ddcfd976304fd125aca33d144

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=6c46a3297beae4ae2d22b26da5e091f058381c7c <0a2a464f863187f97e96ebc6384c052cafd4a54c; version=6c46a3297beae4ae2d22b26da5e091f058381c7c <40dba7c26e897c637e91312b35f664f1d4d0073c; version=6c46a3297beae4ae2d22b26da5e091f058381c7c <5c1149e2abe0b7489300736b8277b45b113de67f; version=6c46a3297beae4ae2d22b26da5e091f058381c7c <ef7b10f3cac7810ddcfd976304fd125aca33d144

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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