CVE-2026-53218

Katalog CVE

CVSS 5.5 · Medium EPSS 0,13%

Kerentanan Use of Uninitialized Resource pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_exthdr: fix register tracking for F_PRESENT flag nft_exthdr_init() passes user-controlled priv->len to nft_parse_register_store(), which marks that many bytes in the register bitmap as initialized. However, when NFT_EXTHDR_F_PRESENT is set, the eval paths write only 1 byte (nft_reg_store8) or 4 bytes (*dest = 0 on TCP/DCCP error path). When len > 4, registers beyond the first are never written, retaining uninitialized stack data from nft_regs. Bail out if userspace requests too much data when F_PRESENT is set.

Rincian

Terbit di NVD

25 Juni 2026

Terakhir diubah

8 September 2026

Status NVD

Modified

CVSS 3.1

5.5 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-908: Use of Uninitialized Resource

EPSS (30 hari)

0,13% peluang dieksploitasi; lebih tinggi dari 1,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/19748967d59c31d24d21d40b728570788310b237 patch
• https://git.kernel.org/stable/c/46fc15a044e9938e7ea77786fb37edd2cd74f031 patch
• https://git.kernel.org/stable/c/67b27434c43b68a97becda98c9f0c8cf6cba2134 patch
• https://git.kernel.org/stable/c/772cecf198da732faebb5dcfc46d66a505be8495 patch
• https://git.kernel.org/stable/c/78069a6d8bc86c9e036eb82c2af4a19cc1871a53 patch
• https://git.kernel.org/stable/c/8738b1b6d0e639ca1fc0f61516afd3557ac4ecc6 patch
• https://git.kernel.org/stable/c/cd513e43b4b2bd1de39e2367bc4261c699a8652f patch
• https://git.kernel.org/stable/c/f08fb3d42fd3aad0b7a263da3ac3ebaf0845e265 patch
• https://cert-portal.siemens.com/productcert/html/ssa-019113.html