CVE-2026-64010 nfc: llcp: Fix use-after-free race in nfc_llcp_recv_cc()
A race condition in the Linux kernel NFC LLCP module allows a use-after-free, potentially enabling local attackers to execute code or escalate privileges.
- 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-2026-64010?
CVE-2026-64010 is a high-severity use after free vulnerability in Linux kernel, published on 19 Jul 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:
nfc: llcp: Fix use-after-free race in nfc_llcp_recv_cc()
A race condition exists in the NFC LLCP connection state machine where the connection acceptance packet (CC) can be processed concurrently with socket release. This can lead to a use-after-free of the socket object.
When nfc_llcp_recv_cc() moves the socket from the connecting_sockets list to the sockets list, it does so without holding the socket lock. If llcp_sock_release() is executing concurrently, it might have already unlinked the socket and dropped its references, which can result in nfc_llcp_recv_cc() linking a freed socket into the live list.
Fix this by holding lock_sock() during the state transition and list movement in nfc_llcp_recv_cc(). After acquiring the lock, check if the socket is still hashed to ensure it hasn't already been unlinked and marked for destruction by the release path. This aligns the locking pattern with recv_hdlc() and recv_disc().
Which versions are affected by CVE-2026-64010?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-64010?
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-2026-64010 being exploited?
There is no known exploitation of CVE-2026-64010 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-64010, DEBIAN-CVE-2026-64010, GHSA-6r5q-vq2q-562c, ROOT-OS-UBUNTU-2204-CVE-2026-64010, UBUNTU-CVE-2026-64010.