In the Linux kernel, the following vulnerability has been resolved:

iomap: Fix possible overflow condition in iomap_write_delalloc_scan

folio_next_index() returns an unsigned long value which left shifted
by PAGE_SHIFT could possibly cause an overflow on 32-bit system. Instead
use folio_pos(folio) + folio_size(folio), which does this correctly.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00026.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
38be53c3fd7f4f4bd5de319a323d72f9f6beb16d affected < 0c6cf409093f307ee05114f834516730c0da5b21
f43dc4dc3eff028b5ddddd99f3a66c5a6bdd4e78 affected < 5c281b0c5d18c8eeb1cfd5023f4adb153e6d1240
f43dc4dc3eff028b5ddddd99f3a66c5a6bdd4e78 affected < eee2d2e6ea5550118170dbd5bb1316ceb38455fb
Linux Linux affected
Version Status Constraints
6.2 affected —
0 unaffected < 6.2
6.1.162 unaffected ≤ 6.1.*
6.5.5 unaffected ≤ 6.5.*
6.6 unaffected ≤ *

No data.

No data.

No data.

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Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0c6cf409093f307ee05114f834516730c0da5b21 cve-icon cve-icon
https://git.kernel.org/stable/c/5c281b0c5d18c8eeb1cfd5023f4adb153e6d1240 cve-icon cve-icon
https://git.kernel.org/stable/c/eee2d2e6ea5550118170dbd5bb1316ceb38455fb cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025123027-CVE-2023-54285-edc0@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-54285 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-54285 cve-icon
History

Fri, 06 Feb 2026 16:45:00 +0000

Type Values Removed Values Added
References

Wed, 31 Dec 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Tue, 30 Dec 2025 12:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: iomap: Fix possible overflow condition in iomap_write_delalloc_scan folio_next_index() returns an unsigned long value which left shifted by PAGE_SHIFT could possibly cause an overflow on 32-bit system. Instead use folio_pos(folio) + folio_size(folio), which does this correctly.
Title iomap: Fix possible overflow condition in iomap_write_delalloc_scan
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-02-06T16:30:48.796Z

Reserved: 2025-12-30T12:06:44.526Z

Link: CVE-2023-54285

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-30T13:16:17.520

Modified: 2026-02-06T17:16:13.743

Link: CVE-2023-54285

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-30T00:00:00Z

Links: CVE-2023-54285 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.