CVEvulnerability

CVE-2026-49428

8.4 HIGH Published 2026-08-19 Modified 2026-09-01 Official page ↗
Status
Analyzed
Published
2026-08-19
Last modified
2026-09-01
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
8.4 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-915

Description

Certain system calls, such open(2) with the O_TRUNC flag set, and fspacectl(2), could incorrectly free memory in largepage objects. These operations are not permitted on largepage objects, but the implementation did not verify this. An unprivileged local user can abuse the bug to access freed kernel memory. This can be exploited to escalate privileges.

Affected configurations

• freebsd freebsd 14.3 • freebsd freebsd 14.4 • freebsd freebsd 15.0 • freebsd freebsd 15.1

Related

Weakness · CWE (1)

  • CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes weakness

References