CVE-2024-46710 drm/vmwgfx: Prevent unmapping active read buffers
A race condition in the vmwgfx driver allows unmapping active buffers, leading to bogus data reads and potential system instability or denial of service.
- 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-2024-46710?
CVE-2024-46710 is a high-severity vulnerability in Linux kernel, published on 13 Sep 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/vmwgfx: Prevent unmapping active read buffers
The kms paths keep a persistent map active to read and compare the cursor buffer. These maps can race with each other in simple scenario where: a) buffer "a" mapped for update b) buffer "a" mapped for compare c) do the compare d) unmap "a" for compare e) update the cursor f) unmap "a" for update At step "e" the buffer has been unmapped and the read contents is bogus.
Prevent unmapping of active read buffers by simply keeping a count of how many paths have currently active maps and unmap only when the count reaches 0.
Which versions are affected by CVE-2024-46710?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-46710?
Apply the vendor's patch.
Is CVE-2024-46710 being exploited?
There is no known exploitation of CVE-2024-46710 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-49324, BELL-CVE-2024-46710, DEBIAN-CVE-2024-46710, GHSA-gjv7-5cpp-hqgw, UBUNTU-CVE-2024-46710.