CVE-2023-53082

Kernel panic via vp_vdpa removal use-after-free

Published May 2, 2025 · Updated May 11, 2026

Use-after-free in affected Linux kernel vp_vdpa branches allows local users to trigger a kernel panic during device hot unplug. The vp_vdpa_remove path unregisters the management device after releasing underlying modern-device state, so vdpa_mgmtdev_unregister accesses freed memory. Exploitation requires local low-privileged access and a configured vp_vdpa device; the demonstrated consequence is a kernel panic.

CVSS severity7.8
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in affected Linux kernel vp_vdpa branches allows local users to trigger a kernel panic during device hot unplug. The vp_vdpa_remove path unregisters the management device after releasing underlying modern-device state, so vdpa_mgmtdev_unregister accesses freed memory. Exploitation requires local low-privileged access and a configured vp_vdpa device; the demonstrated consequence is a kernel panic.

The record

CVE
CVE-2023-53082
Published
May 2, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 2, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.19
  2. Affected versionversion=ffbda8e9df10d1784d5427ec199e7d8308e3763f <aed8efddd39b3434c96718d39009285c52b1cafc
  3. Affected versionversion=ffbda8e9df10d1784d5427ec199e7d8308e3763f <baafa2960731211837d8fc04ff3873ecb7440464
  4. Affected versionversion=ffbda8e9df10d1784d5427ec199e7d8308e3763f <fa1f327f93c9a7310cce9d2fcda28b7af91f7437

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=ffbda8e9df10d1784d5427ec199e7d8308e3763f <aed8efddd39b3434c96718d39009285c52b1cafc; version=ffbda8e9df10d1784d5427ec199e7d8308e3763f <baafa2960731211837d8fc04ff3873ecb7440464; version=ffbda8e9df10d1784d5427ec199e7d8308e3763f <fa1f327f93c9a7310cce9d2fcda28b7af91f7437

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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