CVE-2023-54031

Service interruption via unvalidated vDPA queue index

Published Dec 24, 2025 · Updated Dec 24, 2025

Out-of-bounds read in the Linux kernel's vDPA netlink interface allows local users to interrupt service with crafted netlink messages. The vdpa_nl_policy table omits the nla_policy entry for the queue-index attribute, so parsing can leave an invalid nlattr pointer in info->attrs. The vDPA subsystem must be in use, and the triggering request typically requires CAP_NET_ADMIN or root privileges; the resulting kernel read can crash the system.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the Linux kernel's vDPA netlink interface allows local users to interrupt service with crafted netlink messages. The vdpa_nl_policy table omits the nla_policy entry for the queue-index attribute, so parsing can leave an invalid nlattr pointer in info->attrs. The vDPA subsystem must be in use, and the triggering request typically requires CAP_NET_ADMIN or root privileges; the resulting kernel read can crash the system.

The record

CVE
CVE-2023-54031
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record 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=13b00b135665c92065a27c0c39dd97e0f380bd4f <8ad9bc25cbdcec72e7ca43dd8281decb69ea9a70
  2. Affected versionversion=13b00b135665c92065a27c0c39dd97e0f380bd4f <b3003e1b54e057f5f3124e437b80c3bef26ed3fe
  3. Affected versionversion=13b00b135665c92065a27c0c39dd97e0f380bd4f <ccb533b7070aeeb65c66ea5d590e9c62421dcd61
  4. Affected versionversion=5.19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=13b00b135665c92065a27c0c39dd97e0f380bd4f <8ad9bc25cbdcec72e7ca43dd8281decb69ea9a70; version=13b00b135665c92065a27c0c39dd97e0f380bd4f <b3003e1b54e057f5f3124e437b80c3bef26ed3fe; version=13b00b135665c92065a27c0c39dd97e0f380bd4f <ccb533b7070aeeb65c66ea5d590e9c62421dcd61; version=5.19

Published CVSS scores

5.5Red HatCVSS: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

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

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

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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