CVE-2026-98293 Bluetooth: ISO: Fix parent socket leak in iso_conn_ready()
A reference counting error in the Linux kernel Bluetooth ISO subsystem leaks parent sockets, potentially leading to resource exhaustion and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-98293?
CVE-2026-98293 is a memory corruption vulnerability in Linux, published on 6 Oct 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:
Bluetooth: ISO: Fix parent socket leak in iso_conn_ready()
iso_get_sock() returns the parent socket with a reference held, which is dropped by sock_put() once the child socket has been set up. The error path taken when iso_sock_alloc() fails only calls release_sock() and returns, leaking the reference and thus the parent socket itself.
Drop the reference on that path as well.
Which versions are affected by CVE-2026-98293?
How do I fix CVE-2026-98293?
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-2026-98293 being exploited?
There is no known exploitation of CVE-2026-98293 in the wild and no public exploit code.
Sources
Also known as AZL-106401, BELL-CVE-2026-98293, DEBIAN-CVE-2026-98293, GHSA-m9gh-q95c-rcfx, UBUNTU-CVE-2026-98293.