CVE-2026-6386

Katalog CVE

CVSS 6.2 · Medium EPSS 0,16%

Kerentanan Improper Privilege Management pada freebsd. Skor CVSS 3.1 6.2 (Medium) menurut CISA ADP.

Deskripsi (NVD)

In order to apply a particular protection key to an address range, the kernel must update the corresponding page table entries. The subroutine which handled this failed to take into account the presence of 1GB largepage mappings created using the shm_create_largepage(3) interface. In particular, it would always treat a page directory page entry as pointing to another page table page. The bug can be abused by an unprivileged user to cause pmap_pkru_update_range() to treat userspace memory as a page table page, and thus overwrite memory to which the application would otherwise not have access.

Rincian

Terbit di NVD

22 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.2 (Medium), sumber CISA ADP
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-269: Improper Privilege Management
CWE-732: Incorrect Permission Assignment for Critical Resource

EPSS (30 hari)

0,16% peluang dieksploitasi; lebih tinggi dari 4,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.freebsd.org/advisories/FreeBSD-SA-26:11.amd64.asc advisory vendor