CVE-2026-45250

Katalog CVE

CVSS 7.8 · High EPSS 0,19%

Kerentanan Stack-based Buffer Overflow pada freebsd. Skor CVSS 3.1 7.8 (High) menurut CISA ADP.

Deskripsi (NVD)

The setcred(2) system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied list exceeds the capacity of that buffer, a stack buffer overflow occurs. Because the bounds check on the supplementary groups list occurs after the kernel stack buffer has already been written, an unprivileged local user may trigger the overflow without holding any special privilege. Successful exploitation may allow an attacker to execute arbitrary code in the context of the kernel, allowing an unprivileged local user to gain elevated privileges on the affected system.

Rincian

Terbit di NVD

21 Mei 2026

Terakhir diubah

23 Juli 2026

Status NVD

Modified

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-121: Stack-based Buffer Overflow

EPSS (30 hari)

0,19% peluang dieksploitasi; lebih tinggi dari 7,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.freebsd.org/advisories/FreeBSD-SA-26:18.setcred.asc advisory vendor
• http://www.openwall.com/lists/oss-security/2026/05/21/18
• http://www.openwall.com/lists/oss-security/2026/05/21/3
• http://www.openwall.com/lists/oss-security/2026/05/22/5