CVE-2023-53263: 
Linux Kernel vulnerability analysis and mitigation

CVE-2023-53263 is a vulnerability in the Linux kernel related to a use-after-free issue in the error handling of nouveau_connector_create in the DRM/Nouveau display driver. The vulnerability was discovered and disclosed in September 2025 (NVD).

The vulnerability occurs in the DRM/Nouveau display driver where a use-after-free condition exists in the error handling path of nouveau_connector_create. The issue arises because the connector is freed after calling drm_connector_init without properly cleaning up the DRM side first. This vulnerability is related to a regression from commit 2b5d1c29f6c4 which involved PIOR DP GPIO handling for HPD (NVD). According to Rapid7's assessment, the vulnerability has been assigned a CVSS score of 9.0 with vector (AV:N/AC:L/Au:S/C:C/I:C/A:C) (Rapid7).

The vulnerability can lead to memory corruption in the Linux kernel when handling error conditions in the Nouveau display driver. This could potentially affect system stability and security (NVD).

The vulnerability has been resolved in the Linux kernel through a patch that ensures proper cleanup of the DRM side before freeing the connector. The fix addresses the memory corruption issue in the error handling path (NVD).