CVE-2025-68252 misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup
A local attacker can trigger a memory leak in the Linux kernel's fastrpc driver, potentially leading to 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-2025-68252?
CVE-2025-68252 is a memory corruption vulnerability in Linux, published on 16 Dec 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:
misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup
In fastrpc_map_lookup, dma_buf_get is called to obtain a reference to the dma_buf for comparison purposes. However, this reference is never released when the function returns, leading to a dma_buf memory leak.
Fix this by adding dma_buf_put before returning from the function, ensuring that the temporarily acquired reference is properly released regardless of whether a matching map is found.
Rule: add
Which versions are affected by CVE-2025-68252?
How do I fix CVE-2025-68252?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-68252 being exploited?
There is no known exploitation of CVE-2025-68252 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-68252, GHSA-2c92-jwmp-9jr9, UBUNTU-CVE-2025-68252.