CVE-2023-53057

Kernel corruption via unterminated AMP initialization arrays

Published May 2, 2025 · Updated Aug 5, 2026

Out-of-bounds access in the Linux kernel allows local users to crash or corrupt the kernel during AMP HCI initialization. hci_init_stage_sync walks amp_init1 and amp_init2 according to the preceding function pointer, but both arrays lack the terminating empty entry, so iteration reads and calls data beyond their bounds. Reachability requires local access capable of creating or opening an AMP HCI device; remote Bluetooth frames do not reach this path.

CVSS severityUnavailable
Unscored
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

Out-of-bounds access in the Linux kernel allows local users to crash or corrupt the kernel during AMP HCI initialization. hci_init_stage_sync walks amp_init1 and amp_init2 according to the preceding function pointer, but both arrays lack the terminating empty entry, so iteration reads and calls data beyond their bounds. Reachability requires local access capable of creating or opening an AMP HCI device; remote Bluetooth frames do not reach this path.

The record

CVE
CVE-2023-53057
Published
May 2, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 2, 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=5.17
  2. Affected versionversion=d0b137062b2de75b264b84143d21c98abc5f5ad2 <8497222b22b591c6b2d106e0e3c1672ffe4e10e0
  3. Affected versionversion=d0b137062b2de75b264b84143d21c98abc5f5ad2 <b3168abd24245aa0775c5a387dcf94d36ca7e738
  4. Affected versionversion=d0b137062b2de75b264b84143d21c98abc5f5ad2 <bce56405201111807cc8e4f47c6de3e10b17c1ac

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.17; version=d0b137062b2de75b264b84143d21c98abc5f5ad2 <8497222b22b591c6b2d106e0e3c1672ffe4e10e0; version=d0b137062b2de75b264b84143d21c98abc5f5ad2 <b3168abd24245aa0775c5a387dcf94d36ca7e738; version=d0b137062b2de75b264b84143d21c98abc5f5ad2 <bce56405201111807cc8e4f47c6de3e10b17c1ac

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

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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