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)
References
Configurations
Configuration 1 (hide)
|
History
15 May 2026, 19:56
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/10c13c111d0d7f8e101c742feff264fc98e3f9f7 - Patch | |
| References | () https://git.kernel.org/stable/c/2d4a6f0702c5211e0be8b688c5fc24f082ec74d6 - Patch | |
| References | () https://git.kernel.org/stable/c/e927b36ae18b66b49219eaa9f46edc7b4fdbb25e - Patch | |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-476 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
08 May 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-08 14:16
Updated : 2026-05-15 19:56
NVD link : CVE-2026-43337
Mitre link : CVE-2026-43337
CVE.ORG link : CVE-2026-43337
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference