CVE-2026-23302 net: annotate data-races around sk->sk_{data_ready,write_space}
A data race in Linux kernel networking allows concurrent access to socket pointers, potentially causing undefined behavior or instability.
- 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-2026-23302?
CVE-2026-23302 is a medium-severity vulnerability in Linux kernel, published on 25 Mar 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:
net: annotate data-races around sk->sk_{data_ready,write_space}
skmsg (and probably other layers) are changing these pointers while other cpus might read them concurrently.
Add corresponding READ_ONCE()/WRITE_ONCE() annotations for UDP, TCP and AF_UNIX.
Weakness: CWE-362
Which versions are affected by CVE-2026-23302?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23302?
Apply the vendor's patch.
Is CVE-2026-23302 being exploited?
There is no known exploitation of CVE-2026-23302 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-80672, BELL-CVE-2026-23302, DEBIAN-CVE-2026-23302, GHSA-g352-h749-hp67, ROOT-OS-DEBIAN-11-CVE-2026-23302, ROOT-OS-DEBIAN-12-CVE-2026-23302 and 3 more.