CVE-2026-43287 drm: Account property blob allocations to memcg
Unprivileged users can cause system-wide out-of-memory conditions by allocating unaccounted kernel memory via DRM property blobs.
- 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-2026-43287?
CVE-2026-43287 is a medium-severity denial of service vulnerability in Linux kernel, published on 8 May 2026. 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: Account property blob allocations to memcg
DRM_IOCTL_MODE_CREATEPROPBLOB allows userspace to allocate arbitrary-sized property blobs backed by kernel memory.
Currently, the blob data allocation is not accounted to the allocating process's memory cgroup, allowing unprivileged users to trigger unbounded kernel memory consumption and potentially cause system-wide OOM.
Mark the property blob data allocation with GFP_KERNEL_ACCOUNT so that the memory is properly charged to the caller's memcg. This ensures existing cgroup memory limits apply and prevents uncontrolled kernel memory growth without introducing additional policy or per-file limits.
Weakness: CWE-401
Which versions are affected by CVE-2026-43287?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43287?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-43287 being exploited?
There is no known exploitation of CVE-2026-43287 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43287, DEBIAN-CVE-2026-43287, GHSA-g272-h9j2-8655, ROOT-OS-DEBIAN-11-CVE-2026-43287, ROOT-OS-UBUNTU-2204-CVE-2026-43287, ROOT-OS-UBUNTU-2404-CVE-2026-43287 and 1 more.