CVE-2026-49416

Katalog CVE

CVSS 7.8 · High EPSS 0,15%

Kerentanan Integer Overflow or Wraparound pada freebsd. Skor CVSS 3.1 7.8 (High) menurut CISA ADP.

Deskripsi (NVD)

The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initialization of the buffer wrote beyond the end of the allocation. An unprivileged local user with access to a vt(4) device can trigger an out-of-bounds write in the kernel, potentially escalating privileges.

Rincian

Terbit di NVD

27 Juni 2026

Terakhir diubah

1 Juli 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-190: Integer Overflow or Wraparound

EPSS (30 hari)

0,15% peluang dieksploitasi; lebih tinggi dari 3,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.freebsd.org/advisories/FreeBSD-SA-26:34.vt.asc advisory vendor