CVE-2025-40082: 
Linux Kernel vulnerability analysis and mitigation

A kernel vulnerability identified as CVE-2025-40082 was discovered in the HFS+ filesystem implementation. The issue was disclosed on October 28, 2025, and affects the hfsplus_uni2asc() function. This vulnerability has been assigned a CVSS v3.1 base score of 7.0, indicating a moderate severity level (Red Hat CVE).

The vulnerability is characterized as a slab-out-of-bounds read in the hfsplus_uni2asc() function of the HFS+ filesystem implementation. It has been assigned a CVSS v3.1 vector of CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating local access vector, high attack complexity, low privileges required, no user interaction needed, and high impacts on confidentiality, integrity, and availability (Red Hat CVE).

The vulnerability could potentially lead to unauthorized access to system memory through a slab-out-of-bounds read operation, which could result in information disclosure, system crashes, or potential privilege escalation (Red Hat CVE).

According to Red Hat's assessment, several major versions of Red Hat Enterprise Linux (RHEL) including versions 8, 9, and 10 are not affected by this vulnerability. RHEL 6 is out of support scope (Red Hat CVE).