CVE-2026-53306

Katalog CVE

CVSS 5.5 · Medium EPSS 0,16%

Kerentanan Off-by-one Error pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: tty: hvc_iucv: fix off-by-one in number of supported devices MAX_HVC_IUCV_LINES == HVC_ALLOC_TTY_ADAPTERS == 8. This is the number of entries in: static struct hvc_iucv_private *hvc_iucv_table[MAX_HVC_IUCV_LINES]; Sometimes hvc_iucv_table[] is limited by: (a) if (num > hvc_iucv_devices) // for error detection or (b) for (i = 0; i < hvc_iucv_devices; i++) // in 2 places (so these 2 don't agree; second one appears to be correct to me.) hvc_iucv_devices can be 0..8. This is a counter. (c) if (hvc_iucv_devices > MAX_HVC_IUCV_LINES) If hvc_iucv_devices == 8, (a) allows the code to access hvc_iucv_table[8]. Oops.

Rincian

Terbit di NVD

26 Juni 2026

Terakhir diubah

6 Juli 2026

Status NVD

Analyzed

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-193: Off-by-one Error

EPSS (30 hari)

0,16% peluang dieksploitasi; lebih tinggi dari 5,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/11207e42a332eb8bbcb9fe74df9edd2a807c5607 patch
• https://git.kernel.org/stable/c/3104a3f40feb107f77d7116ad9bf6c210ab7babf patch
• https://git.kernel.org/stable/c/3d3b89e6ab93bdd0efd45828bda6b0e61cc46dff patch
• https://git.kernel.org/stable/c/484357dff256c816d9466bda35eb765685e4dc86 patch
• https://git.kernel.org/stable/c/a76511bc654819425d3b15e77b523d7f9d81f064 patch
• https://git.kernel.org/stable/c/f1dc8e72de9aabe5d96767a4e97219ac26b79fe5 patch
• https://git.kernel.org/stable/c/f2a880e802ad12d1e38039d1334fb1475d0f5241 patch
• https://git.kernel.org/stable/c/fed8b8f33a46db0ee2efdb000f4f630c86ed8ca4 patch