CVE-2026-58094

Katalog CVE

CVSS 7.8 · High EPSS 0,12%

Kerentanan Time-of-check Time-of-use (TOCTOU) Race Condition pada freebsd. Skor CVSS 3.1 7.8 (High) menurut CISA ADP.

Deskripsi (NVD)

The FIOSSHMLPGCNF ioctl(2) operation configures the page size for a largepage shared memory object. This is intended to be used immediately after creating the object, before any memory is allocated for the object. The handler checked whether a page size had already been configured without holding the rangelock. Two concurrent callers could both observe an unconfigured object and set conflicting page sizes, leaving the object in an inconsistent state. An unprivileged local user can exploit this race to escalate privileges.

Rincian

Terbit di NVD

26 Agustus 2026

Terakhir diubah

24 September 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

EPSS (30 hari)

0,12% peluang dieksploitasi; lebih tinggi dari 1,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.freebsd.org/advisories/FreeBSD-SA-26:63.posixshm.asc advisory vendor