CVE-2026-53138

Katalog CVE

CVSS 7.1 · High EPSS 0,13%

Kerentanan Out-of-bounds Read pada linux kernel. Skor CVSS 3.1 7.1 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Bound VBIOS record-chain walk loops [Why & How] All record-chain walk loops in bios_parser.c and bios_parser2.c use for(;;) and only terminate on a 0xFF record_type sentinel or zero record_size. A malformed VBIOS image missing the terminator record causes unbounded iteration at probe time, potentially hundreds of thousands of iterations with record_size=1. In the final iterations near the BIOS image boundary, struct casts beyond the 2-byte header validated by GET_IMAGE can also read out of bounds. Cap all 14 record-chain walk loops to BIOS_MAX_NUM_RECORD (256) iterations. The atombios.h defines up to 22 distinct record types and atomfirmware.h has 13. Assuming an average of less than 10 records per type (which is reasonable since most are connector- based) 256 is a generous upper bound. (cherry picked from commit 95700a3d660287ed657d6892f7be9ffc0e294a93)

Rincian

Terbit di NVD

25 Juni 2026

Terakhir diubah

7 Juli 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-125: Out-of-bounds Read

EPSS (30 hari)

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

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/04e271a952b8863bbafc99bd51aca4c32bff0e0d patch
• https://git.kernel.org/stable/c/0e56f460bddb397fa9a8e6faf7ae7eaa86953eb1 patch
• https://git.kernel.org/stable/c/2645e3caf7e013189da9c6ff621d006cca5a538b patch
• https://git.kernel.org/stable/c/499c6b43a79dd684bddbd18fe8b2235aa2764db4 patch
• https://git.kernel.org/stable/c/6173cfea2f916e01c4f98e29cd654384a05e32a3 patch
• https://git.kernel.org/stable/c/6723188c42ca3b34a9fce634d7a0ecc9ccd5cd56 patch
• https://git.kernel.org/stable/c/e94f5323c41f32a74160378c3b19850d1f203ad5 patch
• https://git.kernel.org/stable/c/ff287df16a1a58aca78b08d1f3ee09fc44da0351 patch