CVE-2026-49423

Katalog CVE

CVSS 3.3 · Low EPSS 0,14%

Kerentanan Use of Uninitialized Resource pada freebsd. Skor CVSS 3.1 3.3 (Low) menurut CISA ADP.

Deskripsi (NVD)

When building the iovec array for a received TLS 1.2 CBC record, ktls_ocf_tls_cbc_decrypt() incremented the iovec index for every mbuf in the chain, including mbufs that were skipped because they contained only TLS header bytes. This left uninitialized entries in the iovec array. The iovec array was allocated without zeroing. A remote TLS peer can cause the kernel to read from uninitialized iovec entries during HMAC computation, resulting in a kernel panic. The peer must be able to control TCP segmentation such that the first mbuf of a CBC record contains only the 5-byte TLS record header.

Rincian

Terbit di NVD

19 Agustus 2026

Terakhir diubah

31 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-908: Use of Uninitialized Resource

EPSS (30 hari)

0,14% peluang dieksploitasi; lebih tinggi dari 2,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.freebsd.org/advisories/FreeBSD-SA-26:46.ktls.asc advisory vendor