CVE-2023-52913 drm/i915: Fix potential context UAFs
A use-after-free vulnerability in the Linux kernel's i915 driver allows local attackers to potentially execute code or escalate privileges via race conditions.
- 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-2023-52913?
CVE-2023-52913 is a high-severity use after free vulnerability in Linux kernel, published on 21 Aug 2024. 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/i915: Fix potential context UAFs
gem_context_register() makes the context visible to userspace, and which point a separate thread can trigger the I915_GEM_CONTEXT_DESTROY ioctl. So we need to ensure that nothing uses the ctx ptr after this. And we need to ensure that adding the ctx to the xarray is the *last* thing that gem_context_register() does with the ctx pointer.
[tursulin: Stable and fixes tags add/tidy.] (cherry picked from commit bed4b455cf5374e68879be56971c1da563bcd90c)
Weakness: CWE-416
Which versions are affected by CVE-2023-52913?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-52913?
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-2023-52913 being exploited?
There is no known exploitation of CVE-2023-52913 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-49129, BELL-CVE-2023-52913, DEBIAN-CVE-2023-52913, GHSA-6wp2-34q6-2gfj, ROOT-OS-DEBIAN-11-CVE-2023-52913, UBUNTU-CVE-2023-52913.