CVE-2025-68761
kernel: Kernel: Privilege escalation via use-after-free in HFS filesystem
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 5, 2026
Updated · August 21, 2026
Description
A flaw was found in the Linux kernel's HFS filesystem. This use-after-free vulnerability occurs when the system attempts to access memory after it has been released, specifically within the hfs_correct_next_unused_CNID() function. A local attacker could exploit this flaw by triggering a specific sequence of operations, potentially leading to privilege escalation or arbitrary code execution.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-825 · Expired Pointer Dereference