CVE-2026-52988 netfilter: nf_tables: join hook list via splice_list_rcu() in commit phase
A race condition in the Linux kernel netfilter subsystem can lead to unsafe list traversal, potentially causing a 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-2026-52988?
CVE-2026-52988 is a high-severity vulnerability in Linux kernel, published on 24 Jun 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:
netfilter: nf_tables: join hook list via splice_list_rcu() in commit phase
Publish new hooks in the list into the basechain/flowtable using splice_list_rcu() to ensure netlink dump list traversal via rcu is safe while concurrent ruleset update is going on.
Weakness: CWE-362
Which versions are affected by CVE-2026-52988?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-52988?
Apply the vendor's patch.
Is CVE-2026-52988 being exploited?
There is no known exploitation of CVE-2026-52988 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-90504, BELL-CVE-2026-52988, DEBIAN-CVE-2026-52988, GHSA-g3ch-wcx8-mmq7, ROOT-OS-DEBIAN-11-CVE-2026-52988, ROOT-OS-DEBIAN-12-CVE-2026-52988 and 4 more.