CVE-2023-53848

Local storage hang via RAID5 cache deadlock

Published Dec 9, 2025 · Updated May 11, 2026

Improper locking in the Linux kernel RAID5 cache allows local users to hang cache shutdown during array reconfiguration. r5l_exit_log flushes disable_writeback_work before clearing conf->log, while the worker waits for conf->log to become NULL after mddev_trylock fails against the held reconfig_mutex. Reachability requires a configured RAID5 journal cache and local ability to initiate array reconfiguration; the resulting circular wait blocks cache teardown.

CVSS severity5.5
Medium
EPSS probability0.23%
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

Improper locking in the Linux kernel RAID5 cache allows local users to hang cache shutdown during array reconfiguration. r5l_exit_log flushes disable_writeback_work before clearing conf->log, while the worker waits for conf->log to become NULL after mddev_trylock fails against the held reconfig_mutex. Reachability requires a configured RAID5 journal cache and local ability to initiate array reconfiguration; the resulting circular wait blocks cache teardown.

The record

CVE
CVE-2023-53848
Published
Dec 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record 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=6.0
  2. Affected versionversion=b13015af94cf405f73ff64ce0797269554020c37 <71cf23271f015a57038bdc4669952096f9fe5500
  3. Affected versionversion=b13015af94cf405f73ff64ce0797269554020c37 <a705b11b358dee677aad80630e7608b2d5f56691
  4. Affected versionversion=b13015af94cf405f73ff64ce0797269554020c37 <ac9e103f282a7854f3274ef5ff0742fbbe8d7d6b
  5. Affected versionversion=b13015af94cf405f73ff64ce0797269554020c37 <c406984738215dc20ac2dc63e49d70f20797730e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=b13015af94cf405f73ff64ce0797269554020c37 <71cf23271f015a57038bdc4669952096f9fe5500; version=b13015af94cf405f73ff64ce0797269554020c37 <a705b11b358dee677aad80630e7608b2d5f56691; version=b13015af94cf405f73ff64ce0797269554020c37 <ac9e103f282a7854f3274ef5ff0742fbbe8d7d6b; version=b13015af94cf405f73ff64ce0797269554020c37 <c406984738215dc20ac2dc63e49d70f20797730e

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/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.

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

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