CVE-2026-53136

Katalog CVE

CVSS 7.8 · High EPSS 0,13%

Kerentanan Out-of-bounds Write pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Clamp VBIOS HDMI retimer register count to array size [Why & How] The VBIOS integrated info tables (v1_11 and v2_1) contain HdmiRegNum and Hdmi6GRegNum fields that are used as loop bounds when copying retimer I2C register settings into fixed-size arrays (dp*_ext_hdmi_reg_settings[9] and dp*_ext_hdmi_6g_reg_settings[3]). These u8 fields are not validated before use, so a malformed VBIOS can specify values up to 255, causing an out-of-bounds heap write during driver probe. Clamp each register count to the destination array size using min_t() before the copy loops, in both get_integrated_info_v11() and get_integrated_info_v2_1(). (cherry picked from commit 5a7f0ef90195940c54b0f5bb85b87da55f038c69)

Advisory KUTIM-CSIRT

• Peringatan Keamanan: 14 Kerentanan Kernel Linux Periode September 2026 pada Ubuntu, AlmaLinux, dan Debian 30 Sep 2026

Rincian

Terbit di NVD

25 Juni 2026

Terakhir diubah

7 Juli 2026

Status NVD

Analyzed

CVSS 3.1

7.8 (High), sumber NVD
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-787: Out-of-bounds Write

EPSS (30 hari)

0,13% peluang dieksploitasi; lebih tinggi dari 2,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/029571d51140650783be4fb98fe7cb4754752086 patch
• https://git.kernel.org/stable/c/3f32d52ec604c659725d865cf8cc6a17a33f9c6a patch
• https://git.kernel.org/stable/c/4d1c3c26c2ab1842e139e61983395d64bd2e518b patch
• https://git.kernel.org/stable/c/5f8b39452fb16f507c9e4d8b4a83ce27e893307c patch
• https://git.kernel.org/stable/c/8aaa7e317fbd4beb9c6a9f77aa4cf52fae78b117 patch
• https://git.kernel.org/stable/c/d6be8e59af412623e3d874be3a048406c0edfe60 patch
• https://git.kernel.org/stable/c/fb0707ce00eef4e2d60c3020e1c0432739703e4a patch