CVE-2024-53056

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy() In mtk_crtc_create(), if the call to mbox_request_channel() fails then we set the "mtk_crtc->cmdq_client.chan" pointer to NULL. In that situation, we do not call cmdq_pkt_create(). During the cleanup, we need to check if the "mtk_crtc->cmdq_client.chan" is NULL first before calling cmdq_pkt_destroy(). Calling cmdq_pkt_destroy() is unnecessary if we didn't call cmdq_pkt_create() and it will result in a NULL pointer dereference.

Impact & exploitability

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

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/4018651ba5c409034149f297d3dd3328b91561fd ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/4018651ba5c409034149f297d3dd3328b91561fdPatch
• https://git.kernel.org/stable/c/c60583a87cb4a85b69d1f448f0be5eb6ec62cbb2Patch
• https://git.kernel.org/stable/c/32ac6dccf561af97f20a3831430577d8a978e672
• https://git.kernel.org/stable/c/fb05e973698f4af008c7fb6e0cfa6a2fa1d98409