PT-2025-54131 · Linux+1 · Linux Kernel+1

Published 2023-01-01 · Updated 2026-05-26 · CVE-2023-54285

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the Linux kernel related to a potential overflow condition within the iomap write delalloc scan function. The folio next index() function returns an unsigned long value, and when left-shifted by PAGE SHIFT on 32-bit systems, this could lead to an overflow. The corrected approach utilizes folio pos(folio) + folio size(folio) to accurately calculate the index.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Buffer Overflow

Weakness Enumeration

CWE-787

CWE-120

Related Identifiers

BDU:2026-01194

CVE-2023-54285

SUSE-SU-2026:0278-1

SUSE-SU-2026:0281-1

SUSE-SU-2026:0293-1

SUSE-SU-2026:0315-1

SUSE-SU-2026:20477-1

SUSE-SU-2026:20498-1

SUSE-SU-2026:20845-1

SUSE-SU-2026:20876-1

Affected Products

Debian

Linux Kernel

References · 1463

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54285.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2026:20477-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0315-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-54285 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-54285 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20876-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01194 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-54285 · Security Note
• https://git.kernel.org/stable/c/0c6cf409093f307ee05114f834516730c0da5b21 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2026:20845-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20498-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0278-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-54285 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-54285 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0293-1 · Vendor Advisory