CVE-2023-54089

Filesystem creation interruption via untagged flush bios

Published Dec 24, 2025 · Updated Dec 24, 2025

Improper flush handling in Linux 6.3 allows local users to interrupt XFS filesystem creation on virtio-pmem devices. async_pmem_flush allocates a flush bio without REQ_OP_WRITE, so submit_bio_noacct rejects it because its operation is neither WRITE nor ZONE_APPEND. Triggering the failure requires access to run mkfs.xfs against a virtio persistent-memory device; the published result is a warning and failed flush, not a reported kernel crash.

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

Improper flush handling in Linux 6.3 allows local users to interrupt XFS filesystem creation on virtio-pmem devices. async_pmem_flush allocates a flush bio without REQ_OP_WRITE, so submit_bio_noacct rejects it because its operation is neither WRITE nor ZONE_APPEND. Triggering the failure requires access to run mkfs.xfs against a virtio persistent-memory device; the published result is a warning and failed flush, not a reported kernel crash.

The record

CVE
CVE-2023-54089
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

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

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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=6.3
  2. Affected versionversion=b4a6bb3a67aa0c37b2b6cd47efc326eb455de674 <c1dbd8a849183b9c12d257ad3043ecec50db50b3
  3. Affected versionversion=b4a6bb3a67aa0c37b2b6cd47efc326eb455de674 <c7ab7e45ccef209809f8c2b00f497deec06b29c0
  4. Affected versionversion=b4a6bb3a67aa0c37b2b6cd47efc326eb455de674 <e39e870e1e683a71d3d2e63e661a5695f60931a7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=b4a6bb3a67aa0c37b2b6cd47efc326eb455de674 <c1dbd8a849183b9c12d257ad3043ecec50db50b3; version=b4a6bb3a67aa0c37b2b6cd47efc326eb455de674 <c7ab7e45ccef209809f8c2b00f497deec06b29c0; version=b4a6bb3a67aa0c37b2b6cd47efc326eb455de674 <e39e870e1e683a71d3d2e63e661a5695f60931a7

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.

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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
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

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Your stack

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