CVE-2026-43337: Linux Kernel: NULL işaretçi başvurusu

Açıklama (NVD)

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix NULL pointer dereference in dcn401_init_hw() dcn401_init_hw() assumes that update_bw_bounding_box() is valid when entering the update path. However, the existing condition: ((!fams2_enable && update_bw_bounding_box) || freq_changed) does not guarantee this, as the freq_changed branch can evaluate to true independently of the callback pointer. This can result in calling update_bw_bounding_box() when it is NULL. Fix this by separating the update condition from the pointer checks and ensuring the callback, dc->clk_mgr, and bw_params are validated before use. Fixes the below: ../dc/hwss/dcn401/dcn401_hwseq.c:367 dcn401_init_hw() error: we previously assumed 'dc->res_pool->funcs->update_bw_bounding_box' could be null (see line 362) (cherry picked from commit 86117c5ab42f21562fedb0a64bffea3ee5fcd477)

Özet bilgiler

Ürün

Linux Linux Kernel

CVSS v3.1

5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

%0,11 (yüzdelik 1)

CWE

CWE-476

Yama

Mevcut

Etkilenen sürümler

Kaynaklar

• NVD kaydı
• git.kernel.org
• git.kernel.org
• git.kernel.org
• git.kernel.org
• CWE-476