CVE-2023-54154

Kernel memory consumption via unreleased SCSI session counters

Published Dec 24, 2025 · Updated Dec 24, 2025

Resource leak in affected Linux kernel releases allows attackers to consume kernel memory by repeatedly creating SCSI target sessions. target_setup_session allocates a 96-byte target_cmd_counter, but transport teardown fails to free it alongside its iscsit_conn or se_sess parent. Reaching the flaw requires administrative SCSI target configuration through configfs, and each affected session lifecycle leaves kernel memory allocated.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
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

Resource leak in affected Linux kernel releases allows attackers to consume kernel memory by repeatedly creating SCSI target sessions. target_setup_session allocates a 96-byte target_cmd_counter, but transport teardown fails to free it alongside its iscsit_conn or se_sess parent. Reaching the flaw requires administrative SCSI target configuration through configfs, and each affected session lifecycle leaves kernel memory allocated.

The record

CVE
CVE-2023-54154
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
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

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=1eaaf1b828cdaa58abccc68962d24005fd5e8852
  2. Affected versionversion=6.4
  3. Affected versionversion=76b77646f17118f5babe93c032e6b7a53bbde3b9 <1cd41d1669bcbc5052afa897f85608a62ff3fb30
  4. Affected versionversion=bc5ebf93ae23a928303b3643c6f4c4da2f769e7c
  5. Affected versionversion=becd9be6069e7b183c084f460f0eb363e43cc487 <d14e3e553e05cb763964c991fe6acb0a6a1c6f9c
  6. Affected versionversion=becd9be6069e7b183c084f460f0eb363e43cc487 <f84639c5ac5f4f95b3992da1af4ff382ebf2e819

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=1eaaf1b828cdaa58abccc68962d24005fd5e8852; version=6.4; version=76b77646f17118f5babe93c032e6b7a53bbde3b9 <1cd41d1669bcbc5052afa897f85608a62ff3fb30; version=bc5ebf93ae23a928303b3643c6f4c4da2f769e7c; version=becd9be6069e7b183c084f460f0eb363e43cc487 <d14e3e553e05cb763964c991fe6acb0a6a1c6f9c; version=becd9be6069e7b183c084f460f0eb363e43cc487 <f84639c5ac5f4f95b3992da1af4ff382ebf2e819

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 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

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

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