CVE-2023-53263 drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create
A use-after-free vulnerability in the Linux kernel's nouveau display driver allows attackers to cause memory corruption, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-53263?
CVE-2023-53263 is a high-severity use after free vulnerability in Linux kernel, published on 16 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create
We can't simply free the connector after calling drm_connector_init on it. We need to clean up the drm side first.
It might not fix all regressions from commit 2b5d1c29f6c4 ("drm/nouveau/disp: PIOR DP uses GPIO for HPD, not PMGR AUX interrupts"), but at least it fixes a memory corruption in error handling related to that commit.
Weakness: CWE-416
Which versions are affected by CVE-2023-53263?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-53263?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-53263 being exploited?
There is no known exploitation of CVE-2023-53263 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-53263, DEBIAN-CVE-2023-53263, GHSA-wrc3-5873-3ff6, UBUNTU-CVE-2023-53263.