CVE-2025-5915 MEDIUM

CVE-2025-5915: Libarchive: heap buffer over read in copy_from_lzss_window() at archive_read_support_format_rar.c

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-122
Published June 9, 2025
Last update January 8, 2026

CVSS base score

6.6/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H

What the vulnerability does

01Description

A vulnerability has been identified in the libarchive library. This flaw can lead to a heap buffer over-read due to the size of a filter block potentially exceeding the Lempel-Ziv-Storer-Schieber (LZSS) window. This means the library may attempt to read beyond the allocated memory buffer, which can result in unpredictable program behavior, crashes (denial of service), or the disclosure of sensitive information from adjacent memory regions.

Key dates

02Disclosure timeline

June 9, 2025 CVE published
January 8, 2026 Record updated