CVE-2026-98051 net: bcmasp: fix tx_spb_ring_full() checking same slot cnt times
A logic error in the Broadcom ASP network driver causes incorrect ring buffer checks, potentially leading to transmission failures or 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-2026-98051?
CVE-2026-98051 is a medium-severity denial of service vulnerability in Linux kernel, published on 25 Sep 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: bcmasp: fix tx_spb_ring_full() checking same slot cnt times
The loop initialised next_index from intf->tx_spb_index on every iteration, so incr_ring() always produced the same result and only one slot was ever tested. Move the initialisation before the loop so each iteration advances next_index and the function correctly checks that cnt consecutive descriptor slots are available before allowing a new transmission.
Weakness: CWE-670
Which versions are affected by CVE-2026-98051?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-98051?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-98051 being exploited?
There is no known exploitation of CVE-2026-98051 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-104474, BELL-CVE-2026-98051, DEBIAN-CVE-2026-98051, GHSA-5g7r-gvc6-8wjf, UBUNTU-CVE-2026-98051.