CVE-2023-53282

Kernel memory-safety violation via premature mailbox release

Published Sep 16, 2025 · Updated Sep 16, 2025

Use-after-free in the lpfc SCSI driver firmware-write path allows local users to trigger a kernel memory-safety violation through a sysfs update. The lpfc_wr_object routine reads wr_object data from mailbox payload memory after releasing the mailbox object back to its pool. Access to the lpfc firmware-upgrade sysfs attribute and compatible hardware is required; the observed result is a use-after-free read.

CVSS severity7.8
High
EPSS probability0.16%
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 the lpfc SCSI driver firmware-write path allows local users to trigger a kernel memory-safety violation through a sysfs update. The lpfc_wr_object routine reads wr_object data from mailbox payload memory after releasing the mailbox object back to its pool. Access to the lpfc firmware-upgrade sysfs attribute and compatible hardware is required; the observed result is a use-after-free read.

The record

CVE
CVE-2023-53282
Published
Sep 16, 2025
Updated
Sep 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <21681b81b9ae548c5dae7ae00d931197a27f480c
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <51ab4eb1a25e73c7fc2ad9026520c4d8369c93cc
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8becb97918f04bb177bc9c4e00c2bdb302e00944
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8dfefa8f424ab208e552df1bfd008b732f3d0ad1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <21681b81b9ae548c5dae7ae00d931197a27f480c; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <51ab4eb1a25e73c7fc2ad9026520c4d8369c93cc; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8becb97918f04bb177bc9c4e00c2bdb302e00944; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8dfefa8f424ab208e552df1bfd008b732f3d0ad1

Published CVSS scores

7.8Canonical UbuntuCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
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

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Your stack

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