CVE-2026-58083

Katalog CVE

CVSS 8.4 · High EPSS 0,17%

Kerentanan Use After Free pada freebsd. Skor CVSS 3.1 8.4 (High) menurut CISA ADP.

Deskripsi (NVD)

While the kernel was copying knotes during fork, a knote with a timer-based filter could fire and be enqueued on the kqueue's active list before the copy was complete. The copy routine did not account for this and could enqueue the new knote a second time, corrupting the active list. In addition, the copy routine did not hold the appropriate locks while reading knote state, allowing further races. An unprivileged local user can trigger a use-after-free in the kernel, potentially leading to privilege escalation.

Rincian

Terbit di NVD

19 Agustus 2026

Terakhir diubah

31 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-416: Use After Free

EPSS (30 hari)

0,17% peluang dieksploitasi; lebih tinggi dari 5,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.freebsd.org/advisories/FreeBSD-SA-26:50.kqueue.asc advisory vendor