CVE-2023-53708

Kernel memory leak via duplicate LPS0 packages

Published Oct 22, 2025 · Updated Oct 22, 2025

Memory leak in Linux kernel ACPI s2idle code allows attackers to consume kernel memory via duplicate AMD LPS0 firmware packages. The lpi_device_get_constraints_amd function allocates lpi_constraints_table for each package and previously replaced its existing allocation when a duplicate appeared. Reachability requires malformed x86 firmware output during AMD LPS0 _DSM evaluation; no unprivileged method for supplying that output is published.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory leak in Linux kernel ACPI s2idle code allows attackers to consume kernel memory via duplicate AMD LPS0 firmware packages. The lpi_device_get_constraints_amd function allocates lpi_constraints_table for each package and previously replaced its existing allocation when a duplicate appeared. Reachability requires malformed x86 firmware output during AMD LPS0 _DSM evaluation; no unprivileged method for supplying that output is published.

The record

CVE
CVE-2023-53708
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1ea7e47807279369c82718efd2677ea25c6579e3
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7b7964cd9db30bc84808a40d13a0633b4313f149
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <883cf0d4cf288313b71146ddebdf5d647b76c78b
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9e8bbde9293151430884aed882a88eaa22298f72

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1ea7e47807279369c82718efd2677ea25c6579e3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7b7964cd9db30bc84808a40d13a0633b4313f149; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <883cf0d4cf288313b71146ddebdf5d647b76c78b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9e8bbde9293151430884aed882a88eaa22298f72

Published CVSS scores

No CVSS assessment is available in this record.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

No sourced classifications are available.

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo